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Contact:	Ms. Wu
Company:	Chongqing Silian Optoelectronic Science & Technology Co., Ltd.
	No.99 Tong Xi Road, Caijia Town, Beibei District, Chongqing,China
	Chongqing 400000
	China
Phone:	86-186-02393806
Fax:	86-023-88939000
E-Mail:

Date/Time:	4/12/22 11:08 GMT

25mm Sapphire Crystal Watch Case , Domed Sapphire Watch Crystal

Description

Sapphire is scaled at Mohs hardness 9, the hardest next to diamond .

It has the excellent endurance and eternal btilliance and transparency .

This is why it has become intimate as the window materials of wristwatches with
so many custoners all over the world .

Specification

Material Aluminum Oxide (Al2O3)
Length(mm) 2.0~200.0 Tolerance 0.03~0.1
Width(mm) 2.0~200.0 Tolerance 0.03~0.1
Thickness 0.1~25.0 Tolerance ±0.03
Surface Roughness ≤0.5nm
Infrared ray Transmission > 85%(@633nm)