Dongguan City Yisen Precision Spring Co., Ltd. (Since 1998) is a high technology hardware company with more than 600 workers, and has been specializing in designing and manufacturing springs, hardware and spring making machines. The total sales revenue of overseas market in 2011 will be at least USD 30 million. Under our team's hard work, our company has successfully gained splendid achievements in a few years. We have cooperated with many universities in China, such as Peking University and THU (Tsinghua University). We've also gained worldwide customers' trust with our high design level, top class quality, high grade services and competitive prices, which make us become the supplier for many famous companies in many business lines in the world. Holding the enterprise spirit of "diligence, practical, innovate, self-support", 600 YISEN people are pound of YISEN and looking forward to extending further and broader cooperation with our customers in all aspects. Our company has been certified by GB/T19002-1994 idt ISO9002:1994 management system in order to upgrade the whole quality management and provide you with the best quality products and the most valuable services!