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Product Description

Overview

For watch stones dark-red ruby conventionally is used. Such a tradition origi-nated in those times when watches were assembled by hand. Red stones are beauti-fully seen and less tiresome to the eye.

Watch “glasses” manufactured on the base of leucosapphire and light-colored sapphires are used by all well-known manufacturers of high-quality watches. This is not a fashion. You will see no scratches on such “glasses.”

Although there are lots substrates which are regarded as potential materials to replace Sapphire Substrate, it is still dominated in the substrates (for GaN LED growth) market, because of its reasonable price and relatively low mismatch. Zhongju is capable of processing substrates according to customer needs. Currently, our sapphire substrate productions ranges from 2 to 12 inches with high quality and accurate orientation.

Table 2 Specification of substrates

Material	High purity Single Crystal Sapphire
Surface Orientation	C-plane ± 0.1°
Primary Flat Orientation	A-plane ± 0.5°
Broken edge length	≤3mm
Crack	0
Defect	No inclusion，twin，or boundary
Bubble and cloud	Dense bubbles, clouds, and scattered bubble marked and counted as defects by length
EPD	≤1000 pits/cm²

Product Categories : Sapphire Window > Wearable Sapphire Window Device

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