jhcoil professional service. professional manufacture. Xinxiang Jiahua Machinery Co., Ltd. is a manufacturer of wire thread inserts and installing tools, such as taps, spanners, broken tools and unload tools, and thread repair kit and so on.. We have metric size, BSW, BSF,UNF and UNC size and the largest size we can do is M76. Our products have passed the evaluation of ISO9001:2000 certification and European RoHS certification. Our company has won a good reputation all over the world. Special spirit equals to special service! Please feel free to contact us for further information.