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A World-Leading

Lab-Grown Diamond Provider

About ZS-Tech

With intensive efforts in microwave plasma-assisted chemical vapor deposition (MPCVD) technique, Shanghai Zhengshi Technology Co., Ltd. (ZS-Tech) boasts the world-leading capabilities of research, development and production of lab-grown diamonds. Our CVD (chemical vapor deposition) diamonds feature high grades of clarity and color, larger carat weights, and purely natural growth, Without any treatment. Our products are widely applied to jewelry making as well as scientific and technological fields, such as industrial cooling, semiconductors, high-end electronics, auto driving, among others.

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An Era of Z Diamond

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Research and development of CVD lab-grown SCDs

In 2002, ZS-Tech embarked on the research and development of CVD lab-grown singular crystalline diamonds (SCD), and pioneered the world-leading MPCVD technique.

Upgrades in quality, yield and fire

Over 12 years, ZS-Tech accomplished the diamonds grown on the CVD seed crystal, industrial-grade rough diamonds, and jewelry-grade CVD SCDs from labs, with great improvements in quality, yield and fire.

Wide applications to jewelry field

ZS-Tech successfully solved the plight of mass production of diamond growth and realized the commercialized operation. Our SCDs weigh 3 carats, graded G color and VS1 clarity. They can be widely used in sophisticated jewelry.

Up to the standards for advanced science and technology fields

Thanks to the research and development of self-owned equipment and upgraded processes, ZS-Tech further improved the quality of our products. We can provide customized loose diamonds in various weights and specifications. ZS-Tech successfully grew loose diamonds weighing more than 10 carats in D color, IF graded clarity. These latest products are up to the quality standards required by the diamonds for industrial purposes in advanced science and technological fields, like optics and semiconductors.

Contributing to and ushering in a global era of diamonds

With smarter equipment, ZS-Tech combines the diamond growth process with smart science and technology, to realize the unmanned operation of production lines, so as to maximize our production efficiency and perfect our product quality. These efforts aim to live up to all scientific research and industrial needs, thus contributing to and ushering in an era of diamond-based science and technology for humankind.

Up to the standards for advanced science and technology fields

Thanks to the research and development of self-owned equipment and upgraded processes, ZS-Tech further improved the quality of our products. We can provide customized loose diamonds in various weights and specifications. ZS-Tech successfully grew loose diamonds weighing more than 10 carats in D color, IF graded clarity. These latest products are up to the quality standards required by the diamonds for industrial purposes in advanced science and technological fields, like optics and semiconductors.

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Pure CVD diamonds
highly graded clarity and color

ZS-Tech is one of the few companies that can produce high-quality CVD diamonds without any color treatment all over the world.

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Applications of the CVD diamonds

Optical Grade

Optical Grade single crystal CVD diamond

Mechanical Grade

Mechanical Grade single crystal CVD diamond

Thermal Grade

Thermal Grade single crystal CVD diamond

Semiconductor Grade

Semiconductor Grade single crystal CVD diamond

Optical Grade

Optical Grade single crystal CVD diamond
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News

Recently, a CVD diamond “Magic Princess” which was submitted for inspection by ZS-Tech, was rated as the world’s largest CVD diamond according to a report from the Gemological Institute of America (GIA). The diamond-set a new world record.

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News & Events

MPCVD培育钻石的优点

May 31, 2023
News & Events

世界知识产权日 征世科技创新在路上

Apr 26, 2023
Investor Relations

Counseling Announcement

Aug 23, 2021