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GPS Tracking Device for Vehicle gps tracker car Protection Anti-Theft GPS311 remote stop engine Key Specifications/Special Features: This tracker is a newly product based on the GSM/GPRS network and GPS satellite positioning system, which set multiple functions of security, positioning, monitoring surveillance, emergency alarms and tracking in its entiret. Function description: 1. Web based online tracking at our server 2. View map on cell phone, PDA, view target current location on map on the cellphone and PDA with the maps link in the message from tracker 3. Get location in real street/address name, send address + password to tracker, tracker will reply detailed street address, e. G. No. 113, Nantou guankou 2ND Rd, Nanshan, Shenzhen, China. 4. Location based service function, get detailed position via GSM network when the tracker in the place where is no GPS signal, with direction for real time track on Google map 5. Location Based Service, if the target you are inquiring enters into underground parking lot or other GPS blind area, the tracker will inform you the location via GSM network 6. Remote engine-stop and resume 7. Tracking function by timing and frequency 8. Authorized number added and deleted function 9. Real time Web server tracking and APP 10. Geofence: Set-up a geofence for the unit to restrict its movements within a district 11. The unit will send the message to the authorized numbers when it breaches the district 12. Waterproof IP66 13. ACC alarm 14. Movement alert 15. Over speed alarm: You can make the inspected target run according to fixed speed, it alarms when speed is exceeded 16. Power supply disconnection alarm 17. Low battery alarm function 18. Check the vehicle status 19. Set up ACC alarm, Sensor alarm by remote controller Quiver/sensor alarm Optional 24V relay for 24V vehicle Siren Extra remote control Applying directions: Vehicle fleet/logistics/vehicle rental Product Notes: Great for private use, company car or rental fleet management Comes with internal GSM and GPS antenna for excellent reception Comes with detailed instructions on how to work with GPRS enabled SIM and setup internet monitoring , so constant tracking information can be displayed on a detailed map Standard Package Include: 1 x tracker 1 x user manual 1 x packing box 1 x harness (cables) 1 x 12V relay 1 x Remote control and remote control Antenna (Only for GPS311C) Warranty 1. One year warranty is provided for all models. 2. All products have been strictly Quality Checked in house before packing. 3. All products have been well packed before shipping. OEM&ODM Service 1.Customize logo and brand print on the device or box 2.Offer firmware modification service 3.Customize design in bulk order Contact Details Shenzhen Coban Electronics Co., Ltd ( GPS Tracker Manufacturer)

Minimum Order: 100

Vehicle GPS Trackers GPS311 Tracking Devices For Vehicle Location Trackers free tracking platform Key Specifications/Special Features: This tracker is a newly product based on the GSM/GPRS network and GPS satellite positioning system, which set multiple functions of security, positioning, monitoring surveillance, emergency alarms and tracking in its entiret. Function description: 1. Web based online tracking at our server 2. View map on cell phone, PDA, view target current location on map on the cellphone and PDA with the maps link in the message from tracker 3. Get location in real street/address name, send address + password to tracker, tracker will reply detailed street address, e. G. No. 113, Nantou guankou 2ND Rd, Nanshan, Shenzhen, China. 4. Location based service function, get detailed position via GSM network when the tracker in the place where is no GPS signal, with direction for real time track on Google map 5. Location Based Service, if the target you are inquiring enters into underground parking lot or other GPS blind area, the tracker will inform you the location via GSM network 6. Remote engine-stop and resume 7. Tracking function by timing and frequency 8. Authorized number added and deleted function 9. Real time Web server tracking and APP 10. Geofence: Set-up a geofence for the unit to restrict its movements within a district 11. The unit will send the message to the authorized numbers when it breaches the district 12. Waterproof IP66 13. ACC alarm 14. Movement alert 15. Over speed alarm: You can make the inspected target run according to fixed speed, it alarms when speed is exceeded 16. Power supply disconnection alarm 17. Low battery alarm function 18. Check the vehicle status 19. Set up ACC alarm, Sensor alarm by remote controller Quiver/sensor alarm Optional 24V relay for 24V vehicle Siren Extra remote control Applying directions: Vehicle fleet/logistics/vehicle rental Product Notes: Great for private use, company car or rental fleet management Comes with internal GSM and GPS antenna for excellent reception Comes with detailed instructions on how to work with GPRS enabled SIM and setup internet monitoring , so constant tracking information can be displayed on a detailed map Standard Package Include: 1 x tracker 1 x user manual 1 x packing box 1 x harness (cables) 1 x 12V relay 1 x Remote control and remote control Antenna (Only for GPS311C) Warranty 1. One year warranty is provided for all models. 2. All products have been strictly Quality Checked in house before packing. 3. All products have been well packed before shipping. OEM&ODM Service 1.Customize logo and brand print on the device or box 2.Offer firmware modification service 3.Customize design in bulk order Contact Details Shenzhen Coban Electronics Co., Ltd ( GPS Tracker Manufacturer)

Minimum Order: 100

GPS Tracking System for Avl Fleet Manage Turn off Engine GPS311 GPS Tracking Device car GPS tracker Key Specifications/Special Features: This tracker is a newly product based on the GSM/GPRS network and GPS satellite positioning system, which set multiple functions of security, positioning, monitoring surveillance, emergency alarms and tracking in its entiret. Function description: 1. Web based online tracking at our server 2. View map on cell phone, PDA, view target current location on map on the cellphone and PDA with the maps link in the message from tracker 3. Get location in real street/address name, send address + password to tracker, tracker will reply detailed street address, e. G. No. 113, Nantou guankou 2ND Rd, Nanshan, Shenzhen, China. 4. Location based service function, get detailed position via GSM network when the tracker in the place where is no GPS signal, with direction for real time track on Google map 5. Location Based Service, if the target you are inquiring enters into underground parking lot or other GPS blind area, the tracker will inform you the location via GSM network 6. Remote engine-stop and resume 7. Tracking function by timing and frequency 8. Authorized number added and deleted function 9. Real time Web server tracking and APP 10. Geofence: Set-up a geofence for the unit to restrict its movements within a district 11. The unit will send the message to the authorized numbers when it breaches the district 12. Waterproof IP66 13. ACC alarm 14. Movement alert 15. Over speed alarm: You can make the inspected target run according to fixed speed, it alarms when speed is exceeded 16. Power supply disconnection alarm 17. Low battery alarm function 18. Check the vehicle status 19. Set up ACC alarm, Sensor alarm by remote controller Quiver/sensor alarm Optional 24V relay for 24V vehicle Siren Extra remote control Applying directions: Vehicle fleet/logistics/vehicle rental Product Notes: Great for private use, company car or rental fleet management Comes with internal GSM and GPS antenna for excellent reception Comes with detailed instructions on how to work with GPRS enabled SIM and setup internet monitoring , so constant tracking information can be displayed on a detailed map Standard Package Include: 1 x tracker 1 x user manual 1 x packing box 1 x harness (cables) 1 x 12V relay 1 x Remote control and remote control Antenna (Only for GPS311C) Warranty 1. One year warranty is provided for all models. 2. All products have been strictly Quality Checked in house before packing. 3. All products have been well packed before shipping. OEM&ODM Service 1.Customize logo and brand print on the device or box 2.Offer firmware modification service 3.Customize design in bulk order Contact Details Shenzhen Coban Electronics Co., Ltd ( GPS Tracker Manufacturer)

Minimum Order: 100

Mini gps Car Tracker GPS Tracking GPS311C remote control vehicle real time with ACC alarm free mobile APP Key Specifications/Special Features: This tracker is a newly product based on the GSM/GPRS network and GPS satellite positioning system, which set multiple functions of security, positioning, monitoring surveillance, emergency alarms and tracking in its entiret. Function description: 1. Web based online tracking at our server 2. View map on cell phone, PDA, view target current location on map on the cellphone and PDA with the maps link in the message from tracker 3. Get location in real street/address name, send address + password to tracker, tracker will reply detailed street address, e. G. No. 113, Nantou guankou 2ND Rd, Nanshan, Shenzhen, China. 4. Location based service function, get detailed position via GSM network when the tracker in the place where is no GPS signal, with direction for real time track on Google map 5. Location Based Service, if the target you are inquiring enters into underground parking lot or other GPS blind area, the tracker will inform you the location via GSM network 6. Remote engine-stop and resume 7. Tracking function by timing and frequency 8. Authorized number added and deleted function 9. Real time Web server tracking and APP 10. Geofence: Set-up a geofence for the unit to restrict its movements within a district 11. The unit will send the message to the authorized numbers when it breaches the district 12. Waterproof IP66 13. ACC alarm 14. Movement alert 15. Over speed alarm: You can make the inspected target run according to fixed speed, it alarms when speed is exceeded 16. Power supply disconnection alarm 17. Low battery alarm function 18. Check the vehicle status 19. Set up ACC alarm, Sensor alarm by remote controller Quiver/sensor alarm Optional 24V relay for 24V vehicle Siren Extra remote control Applying directions: Vehicle fleet/logistics/vehicle rental Product Notes: Great for private use, company car or rental fleet management Comes with internal GSM and GPS antenna for excellent reception Comes with detailed instructions on how to work with GPRS enabled SIM and setup internet monitoring , so constant tracking information can be displayed on a detailed map Standard Package Include: 1 x tracker 1 x user manual 1 x packing box 1 x harness (cables) 1 x 12V relay 1 x Remote control and remote control Antenna (Only for GPS311C) Warranty 1. One year warranty is provided for all models. 2. All products have been strictly Quality Checked in house before packing. 3. All products have been well packed before shipping. OEM&ODM Service 1.Customize logo and brand print on the device or box 2.Offer firmware modification service 3.Customize design in bulk order Contact Details Shenzhen Coban Electronics Co., Ltd ( GPS Tracker Manufacturer)

Minimum Order: 100

　　Rotary shaft seals, also known as lip seals or oil seals, are crucial components in various mechanical systems. They serve the vital role of preventing the leakage of fluids and the ingress of contaminants in rotating shaft applications. One might wonder, "What material is rotary shaft seals?" The answer involves understanding the materials that make up these seals and how their composition contributes to their performance and durability. 　　Material Composition of Rotary Shaft Seals 　　Rotary shaft seals are primarily composed of two key materials: a flexible elastomer and a supporting metal framework. This combination optimizes the seal's ability to maintain a secure barrier while accommodating the dynamic movement of the rotating shaft. 　　1. Elastomeric Material: 　　The primary sealing element of a rotary shaft seal is the flexible lip that comes into direct contact with the shaft. This lip is typically made from an elastomeric material, most commonly nitrile rubber (NBR) or fluoroelastomer (FKM). The choice of elastomer depends on the specific application, operating conditions, and the fluids the seal will encounter. 　　Nitrile Rubber (NBR): NBR is widely used for rotary shaft seals due to its excellent oil resistance and cost-effectiveness. It provides reliable sealing for applications involving lubricating oils, fuels, and non-aggressive fluids. 　　Fluoroelastomer (FKM): FKM seals offer superior resistance to a broader range of chemicals, including aggressive fluids, fuels, and high-temperature environments. FKM seals are chosen for applications where extreme conditions or exposure to corrosive substances are expected. 　　2. Metal Framework: 　　Supporting the elastomeric lip is a metal framework that provides structural integrity and stability to the seal. The metal framework is typically made from stainless steel or other corrosion-resistant metals. This framework reinforces the seal, prevents distortion, and maintains the proper pressure against the rotating shaft, ensuring effective sealing. 　　Tailoring Materials to Applications 　　The choice between NBR and FKM, as well as the specific composition of the metal framework, depends on several factors: 　　Fluid Compatibility: The compatibility of the sealing materials with the fluid being sealed is crucial. NBR is suitable for common oils, whereas FKM is chosen for aggressive chemicals and high-temperature environments. 　　Temperature Range: FKM excels in high-temperature applications, while NBR is suitable for lower temperature ranges. 　　Pressure Conditions: Both NBR and FKM seals can handle a range of pressure conditions, but the design and material selection are optimized for specific pressures. 　　The material composition of rotary shaft seals involves a delicate balance between elastomeric properties and structural support. NBR and FKM, along with carefully chosen metal frameworks, create a harmonious combination that effectively seals rotating shafts while maintaining durability and resistance to diverse operational conditions. The selection of these materials is guided by the specific requirements of each application, ensuring that rotary shaft seals perform their essential sealing role reliably and efficiently.

Minimum Order: 100

　　Fluoroelastomer seals, commonly known as FKM seals, have gained significant attention for their exceptional performance in various industrial applications. A pertinent question that arises is whether these seals possess the capability to withstand the corrosive effects of acids and alkalis. The answer lies in understanding the unique properties of fluoroelastomers and their suitability for resisting the challenging conditions posed by acids and alkalis. 　　Fluoroelastomers: A Brief Overview 　　Fluoroelastomers are a type of synthetic rubber known for their outstanding resistance to heat, chemicals, and extreme environments. These elastomers are highly fluorinated, which imparts them with remarkable chemical resistance, making them well-suited for applications in aggressive chemical environments, such as those involving acids and alkalis. 　　Acid Resistance of Fluoroelastomer Seals 　　FKM seals exhibit remarkable resistance to a wide range of acids, including strong mineral acids like sulfuric acid, hydrochloric acid, and nitric acid. This resistance is attributed to the strong carbon-fluorine (C-F) bonds in the molecular structure of fluoroelastomers. These bonds create a barrier that prevents the acid molecules from penetrating the material, thus maintaining the integrity of the seal. 　　Alkali Resistance of Fluoroelastomer Seals 　　Similarly, fluoroelastomer seals demonstrate commendable resistance to alkalis, which are strong bases. Alkalis, like sodium hydroxide and potassium hydroxide, can degrade many materials over time. However, the inherent chemical structure of fluoroelastomers makes them resistant to the erosive effects of alkalis, ensuring the seals retain their functionality even in alkaline environments. 　　Application in Harsh Environments 　　Fluoroelastomer seals find extensive use in industries such as chemical processing, petrochemicals, pharmaceuticals, and automotive manufacturing, where exposure to acids and alkalis is common. Their ability to maintain a reliable seal under such aggressive conditions contributes to the longevity and efficiency of equipment and machinery. 　　Limitations and Considerations 　　While fluoroelastomer seals exhibit excellent resistance to acids and alkalis, it's important to note that their performance may vary depending on factors such as concentration, temperature, and exposure duration. For highly concentrated or extremely corrosive substances, it's advisable to consult with seal manufacturers to ensure the optimal selection of fluoroelastomer compounds that match the specific chemical environment.

Minimum Order: 100

　　In the world of sealing technology, oil seals play a vital role in preventing the leakage of fluids and contaminants in various mechanical systems. Among the various designs available, the choice between single lip and double lip oil seals is a critical decision. Each type offers distinct advantages based on the specific application and environmental conditions. Understanding the differences between these two types of oil seals is essential for making informed decisions about their use. 　　Single Lip Oil Seal: Simple and Effective 　　The single lip oil seal, as the name suggests, features a single flexible lip that makes contact with the rotating shaft. This lip is typically made of rubber or elastomeric material, and it provides a reliable barrier against fluid leakage. Single lip seals are commonly used in applications where moderate sealing performance is required and where the operating conditions are not extremely demanding. 　　Advantages of Single Lip Seals: 　　Simplicity: Single lip seals have a straightforward design, making them easy to install and replace. Their simplicity often translates to lower manufacturing costs. 　　Lower Friction: Due to having only one lip in contact with the shaft, single lip seals generally generate less friction, which can be advantageous in applications where energy efficiency is a concern. 　　Cost-Effectiveness: Single lip seals are often more cost-effective compared to their double lip counterparts, making them a practical choice for applications with budget constraints. 　　Double Lip Oil Seal: Enhanced Protection 　　Double lip oil seals, on the other hand, incorporate an additional lip, creating a dual-barrier system. This extra layer of protection provides increased sealing effectiveness, making double lip seals suitable for applications involving higher pressures, harsh environments, or a greater need for contamination prevention. 　　Advantages of Double Lip Seals: 　　Enhanced Sealing: The dual lip design offers better sealing performance, making double lip seals more effective in preventing fluid leakage and ingress of contaminants. 　　Increased Contamination Protection: The additional lip acts as a backup, providing an extra line of defense against particles, dust, and other contaminants that could compromise the seal. 　　Versatility: Double lip seals are versatile and can be used in a wide range of applications, from automotive engines to industrial machinery, where a higher level of sealing reliability is required. 　　The decision between a single lip and a double lip oil seal depends on various factors, including the operating environment, pressure conditions, and required sealing performance. For less demanding applications where cost- effectiveness is crucial, a single lip seal might suffice. However, in situations where sealing integrity and contamination prevention are top priorities, a double lip seal is the preferred choice.

Minimum Order: 100

　　The gearbox is a critical component in vehicles and machinery, responsible for transmitting power from the engine to the wheels or other mechanical components. Proper lubrication is essential to ensure smooth operation and longevity. However, gearbox oil seal leaks can compromise this lubrication and lead to various issues. Understanding the symptoms of such leaks is crucial for timely detection and maintenance. 　　Gearbox Oil Seals: A Vital Barrier 　　Gearbox oil seals play a crucial role in preventing the leakage of lubricating oil and keeping contaminants out of the gearbox. They are strategically placed at points where rotating shafts penetrate the gearbox housing. These seals maintain a tight barrier between the internal components and the external environment, ensuring that the lubricating oil remains within the gearbox. 　　Symptoms of Gearbox Oil Seal Leaks 　　Visible Oil Stains: One of the most noticeable signs of a gearbox oil seal leak is the presence of oil stains or puddles beneath the gearbox or transmission. This can be observed when a vehicle is parked for a period of time. The stains are typically dark in color and have a distinct oil-like appearance. 　　Reduced Oil Levels: Gearbox oil seal leaks can lead to a gradual decrease in the oil level within the gearbox. This can affect the efficiency of the gearbox and lead to increased friction and wear among its components. 　　Unusual Gear Shifting: If you notice difficulty or hesitation while shifting gears, it could be due to insufficient lubrication caused by an oil seal leak. Proper lubrication is vital for smooth gear changes, and a leak can lead to increased resistance and gear engagement problems. 　　Strange Noises: Insufficient lubrication due to oil seal leaks can result in increased friction and wear, leading to unusual noises such as grinding, whining, or clunking when the gearbox is in operation. 　　Overheating: Gearbox components that lack proper lubrication due to oil seal leaks can generate excessive heat. Overheating can result in damage to gears and other internal components, leading to costly repairs if not addressed promptly. 　　Burning Smell: If oil leaks onto hot engine or exhaust components, it can result in a distinct burning smell. This smell may be more noticeable after driving the vehicle for a period of time. 　　Prompt Action: Importance of Addressing Leaks 　　Recognizing and addressing gearbox oil seal leaks promptly is vital to prevent further damage and costly repairs. Insufficient lubrication can lead to premature wear of gears, bearings, and other critical components, ultimately compromising the overall performance and safety of the vehicle or machinery. 　　Gearbox oil seal leaks can have serious consequences for the functionality and longevity of vehicles and machinery. Being attentive to symptoms such as visible oil stains, reduced oil levels, abnormal gear shifting, strange noises, overheating, and burning smells can help identify these issues early. Regular maintenance checks and addressing leaks swiftly can ensure the gearbox remains well-lubricated and operates smoothly, prolonging the lifespan of the equipment and preventing unnecessary downtime.

Minimum Order: 100

　　In the realm of mechanical engineering and industrial applications, the question of how much pressure a skeleton oil seal can withstand is of paramount importance. Skeleton oil seals play a crucial role in preventing the leakage of fluids and contaminants in various machinery and equipment. Understanding their pressure tolerance is essential for ensuring their reliability and longevity in demanding operational conditions. 　　Pressure Tolerance: Exploring the Limits 　　The pressure tolerance of a skeleton oil seal primarily depends on its design, materials used, and the specific application it's intended for. Skeleton oil seals are typically constructed with a combination of metal and rubber components. The metal skeleton provides structural integrity and support, while the rubber or elastomeric outer layer offers effective sealing capabilities. 　　Design and Material Factors 　　The design of a skeleton oil seal is engineered to withstand pressures inherent in its intended application. The choice of materials is vital in determining the seal's pressure resistance. High-quality rubber compounds are selected for their ability to withstand varying pressures and temperature ranges. Manufacturers often conduct rigorous tests to ensure that the chosen materials maintain their integrity and sealing properties under stress. 　　Operational Scenarios 　　In the automotive industry, for instance, skeleton oil seals are found in engines and transmissions. These seals must withstand not only the pressure generated by the reciprocating and rotating movements of internal components but also the temperature fluctuations that occur during engine operation. The pressure in such scenarios can range from a few psi (pounds per square inch) to several hundred psi, depending on the specific component and operating conditions. 　　Industrial Machinery Applications 　　In industrial machinery, skeleton oil seals are commonly employed in pumps, compressors, and hydraulic systems. These systems often involve higher pressures due to the need for efficient fluid transfer and power generation. Skeleton oil seals used in such environments are designed with reinforced structures and advanced elastomeric materials to handle pressures that can exceed 1000 psi. 　　Extreme Conditions and Custom Solutions 　　In certain specialized applications, skeleton oil seals are subjected to extreme pressures, such as in heavy-duty construction equipment or oil drilling machinery. In these cases, manufacturers work closely with engineers to develop custom solutions that incorporate innovative materials and designs to ensure reliable sealing even under immense pressure.

Minimum Order: 100

Specification wind power plant for converting kinetic wind energy into electrical energy movable wind power plant that can be set up outside 4 base supports for stabilisation stand-alone operation with connection to ET 220 or ET 220.10 generator for converting kinetic energy into electrical energy accumulator for storing the electrical energy measurement of wind velocity measurement of the rotational speed of the rotor

Solar water heater principle lab bench is designed for teaching requirement of vocational training school, students can do assemble and test on solar water heater. This bench is divided into two parts, solar collecting system of solar water heater and experiment detecting system, it is the ideal product to do and practice teaching, the product is divided into indoor and outdoor installation type.

This system can simulate solar energy generation process, enable students to understand on photovoltaic generation system directly, and be familiar with grid connection training equipment composition and run principle.

This system can simulate solar energy generation process, enable students to understand on photovoltaic generation system directly, and be familiar with off- grid training equipment composition and run principle.

　　External thread oil seals are used to prevent the leakage of oil or other fluids from a machine or device. These seals are designed to fit around the external threads of a rotating shaft, creating a tight seal that prevents fluid from escaping. External thread oil seals are commonly used in a variety of applications, including engines, gearboxes, pumps, and compressors. 　　One of the primary functions of an external thread oil seal is to prevent fluid leakage. In many machines and devices, fluids such as oil or hydraulic fluid are used to lubricate moving parts and reduce friction. If these fluids were to leak out, it could result in increased wear and tear on the machine, reduced performance, and even failure. External thread oil seals help to prevent this by creating a tight seal around the external threads of the shaft, preventing fluid from escaping. 　　In addition to preventing fluid leakage, external thread oil seals also help to protect the internal mechanisms of a machine from dust and debris. In many applications, dust and debris can enter the machine and cause damage to the internal components. External thread oil seals help to prevent this by creating a barrier that keeps dust and debris out. 　　When selecting an external thread oil seal, it is important to consider factors such as the size of the shaft, the type of fluid being used, and the operating conditions of the machine. The seal should be made from a material that is compatible with the fluid being used and able to withstand the operating temperature and pressure of the machine. It is also important to ensure that the seal is properly installed and maintained to ensure optimal performance. 　　External thread oil seals play a crucial role in preventing fluid leakage and protecting machines from dust and debris. By selecting the right seal for your application and ensuring proper installation and maintenance, you can help to improve the performance and longevity of your machine.

Minimum Order: 100