Rong Ruida Science & Technology Co., Ltd. (Hebi) is an American wholly-owned enterprise in China. The company is engaged in R&D, production and distribution of the most effective labor-protection products and applications to the people working in any hazard conditions.Since 1996, the company has developed a series of auto-darkening welding helmets. Combining the modern optical-electronics technology and aesthetical design, molded and assembled with the most advanced technology provided by SIEMENS in Germany, the welding helmet has gone through extensive optical and impact-resistance test, and fully met ANSI Standard Z87.1, European CE standard and the requirement of China CNACL 201-99. Currently, the company has sold its products to the end users in the United States, Canada, Russia, Japan and Southeast Asia, and received the users' consistent satisfaction.