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1995, Our first plant set up, which named zhecheng cheng cheng company

2010, our sales company(WUXI NAMUER) set up, which starts to do export

2013, company was approved to be member of IDAC(Industrial Diamond  Association of China).

2014, Move into modern plant and renamed as HOLD DIAMOND, new plant covers an area of 140000 square meters, self-built plant is more than 60,000 square meters, and total investment is 0.16billion RMB


2014, company invest new equipments:60 sets of 700 cylinder bore large cubic press equipment, 150 sets of selection machines, 200 sets of automatic diamond particles settlement machines, 60 sets of ultra fine powder centrifuges,

3 sets of 10 cubic airflow shaping machines, laser particle size analyzers, diamond impact strength testers(TI,TTI), scanning electron microscopes and other advanced production testing equipments

2014,on several occasions guided by Guo Geng Mao and Xie Fuzhan in person, who are the provincial party secretary and governor of Henan Province.

2015,reached a cooperation agreement of "production, learning and research" with the Jilin University National superhard materials laboratory. In the same year in July, gained the national high-tech enterprise certification and owne