ZHEJIANG HUANFANG FOUNDED IN 1990 WHICH IS A HIGH-TECH JOINT-STOCK ENTERPRISE FOCUSING ON THE R&D, DESIGN, PRODUCTION AND SALES OF SOLENIOD SWITCHES, RELAYS, HIGH-VOLTAGE CONTACTORS, RESOLVERS AND COIL ASSEMBLY FOR ELECTROMAGNETIC DHT,WHO IS THE LEADING DRAFTING UNIT FOR STANDARD OF SOLENOID SWITCHES AND RELAYS, AND LEAD BY LARGE MARGIN IN THE INDUSTRY.