Hard Superabrasives (Shanghai)Co., Ltd is founded by Junxue Zhou, a professor from Shanghai Institute of Ceramics Chinese Academy of Sciences. The company focus on the R&D, manufacturing and sales of super abrasives(diamond & CBN abrasives). Our CBN honing stone has the advantage of longer life,higher effeciency and cost effective, can support Sunnen, Nisson,Nagel and Gerlin honing machine, widely used in the auto parts(connect rod,cylinder,fork,rocker arm), sewing parts, mould making and compressor industry. Our diamond honing stone widely works on the ceramics and alloys including aluminium, coppor and carbide. We provide state of art quality and competitive price and look forward to cooperate with you.