In 1985, our company, Jie-Yang, was founded in conformity with a sincere working attitude, the best product quality and the first-rate service in metalworking industry. Along the way, we have become one of the top professional socket manufacturer, and without a doubt, we’re ISO-9001 certified.Our company underwent organization restructuring in order to cater different customer needs as time went by. As a result, the restructuring process was complete in 2003 and a Research and Development Department was established. Until today, we still continue to improve and innovate,