Zhengtong Special Material Factory Hi & New Tech Zone Chengdu has been founded in 1998. We are a professional factory engaged in Cemented Carbide products design, development and production. Our main products are high quality cemented carbide products, such as drill bit sets (oil & mine), compound substrates, inserts, cutting tools, sectional materials, wear-resistant parts, stretching dies, punching dies, roller collars, die blank products, mining alloys, wood cutting tools, nozzle ...   |