Beijing Gang Yan Diamond Products Company (Gang Yan) was started by Central Iron & Steel Research Institute (CISRI) in 1993. As No.1 research institution in China, CISRI has over 55 years of experience in developing advanced materials and setting national standards for materials processing and analyzing. Gang Yan was set up to take advantage of the extensive research CISRI has done in the powder metallurgy. In 1999, CISRI grouped five of its industrial