We Xin Yuan Superhard Material Products Co.,Ltd is originally known as Zhe Cheng No.1 Diamond Micro Powder Factory.We are the leading diamond micro powder manufacturer in China, our company is one of the biggest diamond micro powder manufacturer that produces high quality diamond micro powders, with the annual output reaching 150,000,000 carats we can supply you products with excellent quality and best price .We can send sample for your testing. Looking forward to hearing from you. Thanks & best regards Lily Yang