High quality sapphire smart ring shell

An anti-impact and anti-scratch design.

With high corrosion resistance.

With high electrical resistance.

Excellent thermal stability.

With high optical production rate.

Features a high melting temperature of 2030 °C.

With a high hardness of 9 Mohs, which is second to diamond.

Purity: 99.99%.

Density: 3.98-4.1g/cm2.

Compressive strength: 21000kg/cm2.

Flexural strength: 4000kg/cm2.

Infrared transmittance: 85%.

Dielectric constant: 7.5 - 10.5.

Place of origin: China.

Color: transparent or custom-made.

Size: custom-made.

About us

Sun Yin Crystal Ind. Co., Ltd was established in 1994 and managing by Hong Kong officer. We have over 30 years experiences about Sapphire's processed. The scale of production capacity and the comprehensive strength of Sun Yin Crystal who is the top three in Sapphire industry in China.

Sun Yin Crystal is focused on the manufacture and value-added of Sapphire Crystal which products including watch glass and accessories, glass cover of the mobile phone, jewelry and various kinds of electronic products. We currently have more than 960 workers in over 50,000 square meter factory areas. On the other hand, Sun Yin Crystal has advanced production machines and professionals, and introduce the enterprise management that we can produce over 18 million pieces of high-quality products per annum to customers.

We have also achieved ISO 9001 certification. In 2017, Sun Yin Crystal has imported some automation production of technology and machine that can reduce the whole production time and cost-effectively. Therefore, Sun Yin Crystal can provide a competitive price and high-quality products for customers.

FIVE POINTS OF THE ADVANTAGES.

- We have self-factory for raw material in Hunan, China.

- We can output over 20 million pieces of Sapphire crystal in annual.

 -Over 30 years of manufacturing experience of Sapphire.

- The date of delivery on time.

- Our quality of products can compliantwith REACH and RoHS standard.

Application scope of sapphire products.

-Sapphire glass

-Sapphire watch lens

-Sapphire window panel

-Sapphire Phone Cover

-Sapphire optical components

-Sapphire medical beauty equipment accessories

-Sapphire Jewelry

-Sapphire smart wearables

-Sapphire Crystal for HUD Car Head-Up Display

-Ceramic smart wearables

-Supply in Mainland and overseas market (Included Switzerland & Germany)

- Have long-term cooperation with famous brands companies

- Have a highly appreciated from the partners

Why should you buy from us not from other suppliers?

We have over 30 years experiences for Sapphire's processed and self-factory for the raw material that decrease the production cost/price.We are the top three in Sapphire industry in China.Our quality of products can compliant with REACH and RoHS standard.

Return Policy

To protect our customers' rights, our company has established the following return policy:

Return Period

Customers may request a return within 30 days of receiving the product. Returned items must be in unused condition, with original packaging intact.

Non-Returnable Items

Returns will not be accepted under the following circumstances:

The product has been used or damaged due to mishandling

Shipping Costs

Return shipping fees are the responsibility of the customer.

Contact Information

If you have any questions or would like to initiate a return, please contact us at:

📧 Email: marketing@sunyincrystal.com

📞 Phone: +852 2156 3277