Dongguan Changxin Hardware Store was founded in 1999, located in Yangming Road, Chiling Manage Area Houjie Town, Guangdong, China. We are specialized in researching and manufacturing air tools for 11 years, and there is a professional R&D department and manufacture team in our company. By now, we have gotten several patents for appearance design of air tools. Our own brand â??Naibishi" gains a highly praise in our line at their high quality and pretty after service. We have introduced an advanced heat treatment and forging techniques as well as metallurgical analysis test equipments into our production to make sure that all our products in a high quality of hardness and ductility, and full CNC production to make sure that all our tool parts in a high standard and precision. There is an excellent service system in our company to offer our customer guidance of operation and maintenance, and there are three months to offer free maintenance.