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- High hardness - 9H (Second only to Diamond)
- Scratch resistance (compressive strength 21000 kg/cm²)
- Abrasion resistance
- High mechanical strength
- High temperature resistance (Melting point 2050°C)
- Good thermal stability
- High optical production rate




Sun Yin Crystal Industry Co., Ltd. was established in 1994, with more than 25 years of sapphire processing experience, and has a complete sapphire production chain from raw material production to coating, our management system has passed ISO9001 certification and the product quality is compliance with REACH and RoHS standard, which has taken advantage of the market.

We provide professional equipment and machines to support the quality of production.




Our Team
At present, we have more than 800 employer in China and Hong Kong. The enterprise management enables us to produce more than 18,000,000 pieces of sapphire crystal per year.



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