Kingray New Materials Science & Technology Co ., Ltd , is a hi-tech public company established by CRIMM ( Changsha Research Institute of Mining and Metallurgy), a hi-tech enterprise under the Central Government , Valin Group and other four enterprises. And now KINGRAY are : - One of the earliest producers of Synthetic Diamond in China - IPO in 2001 in Shanghai Stock Exchange - Sales value over 200 Million US Dollars in 2007 - Germany MPA, EN13236 Certified and ISO9001:2000 Certified - Your reliable partner of Diamond Powder & Diamond Tools . Any inquiries or business opportunity, pls don&＃039;t hesitate to contact me. Best Regards. Mandy Laue</p>