... , P35 available. Chengdu CTRI Science & Technology Co., Ltd.(Chengdu Tool Research Institute) is a professional manufacturer of carbide cutting tools ... in China, enjoying a high prestige in China's tool industry. Founded in 1956, our company has more than ... Scarfing Inserts for Weld Beads, Carbide Inserts for Bearing Industry, Tool Holders, Special Heavy Milling Inserts, as well as QPQ Salt-bath ...