Quality , Speed , Service , Innovation
Quality Policy

The key figures at CWT’s quality policy are quality, efficiency, service and innovation. We strive to provide all our customers with the sapphire in the top quality for wafer manufacturing in time-demanding efficiency.

We adopt a quality management system to supervise all manufacturing activities in order to meet customers’ requirements toward quality. The system also ensures us to monitor and improve achievements continuously. The foundation for our quality management system is control management; also, at the same time, we follow international standards, including ISO 9001:2015, to enhance its system infrastructure.


Before arriving at customers, every product of CWT has passed a series of strict and rigorous quality inspections. Therefore, our products are able to satisfy our customers with precise quality.

See our Patent and Certification