ZZDM Superabrasives Co., Ltd., an ISO9001:2015 certified company, established in Zhengzhou High & New Tech. Industrial Zone, is a high-tech company engaged in R&D, production and sales of superhard composite materials (PCD & PCBN) and superhard materials......

KYKY TECHNOLOGY CO., LTD., was founded in 1958, the pioneer of vacuum technology and electron optics in China. In the past 60 years, KYKY has been dedicated to providing comprehensive vacuum solutions to the customers all over the world. KYKY invented......