Chengdu CTRI Science & Technology Co. Ltd (Chengdu Tool Research Institute) is a professional manufacturer and exporter of various cutting tools in China. Our main products include Indexable Carbide Threading Inserts, PCD and CBN Inserts, Ceramic inserts,Carbide Indexable Inserts, Ceramic Rings and various carbide products. You are welcome to send your inquiries. I can assure you that any of your inquiries will receive our professional and prompt attention.