The predecessor of HALNN Superhard material Co.,Ltd. is country Henan Superhard Material Institute. So the turning inserts and grinding inserts from halnn are all produced strictly,have a good quality.HALNN superhard company specialized in the production of CBN cutting tools/PCBN inserts/solid CBN inserts/hard turning tools and other super hard material products for turning/machining all kinds of wear resistant cast iron/cast steel, harden steel materials in this industry. The main products PCBN cutting tools and solid CBN cutting tools have obtained several practical patents, especially in interrupted cutting of hardened steel, Hi-Cr white cast iron etc,(such as:gear bearing,rolls/roller,ball screw,auto parts,brake disc,brale drum,etc) leading the world class level and enjoy a high reputation over the academia circles of super hard cutting tools. As a pioneer of Chinese super hard cutting tools, HALNN is the most famous brand on hard turning and high speed machining the hard material.