... 0.5-1.5,0-2,1-2,1-3,3-6,4-8,5-10,6-12,8- ... Certificate.company profileEstablished in 1990,Zhecheng Hongxiang Superhard Material Co., Ltd is the first producer who reserached synthetic diamond. ... /Diamond powder/ synthetic diamond powder/ synthetic diamond rvd powder/industrial diamond powder/diamond micron powder/ artifical diamond /Diamond fine powder/synthetic/diamond powder rvd Diamond fine powder