Shaanxi Zhongdian Electirc Co., Ltd lies in the high technology industrial development zone of Xi'an (national-level). Registered capital is 10 million yuan. Zhongdian is the main company that design and manufacture high current DC disconnector at present of our country, the company passes ISO9001: 2000 quality system authentication . There are more than 80 staffs in our company, more than 80% gained academic certificates or above the junior college level. It is divided into seven departments, they are administration department , engineering department , market department , technological research and development department , production department , after service department, Finance Department. There are 16 engineers and technicians in our company. Among them, 5 are senior engineers, 2 are masters, 7are engineers. Factory building is 2000 square meters. Professional engineer responsible for quality check on produce from design, produce, examine, to test before out of factory according to ISO9001 : 2000 quality system authentication. After service department leaded by an experience engineer can offer the high quality service to user.
HD28 DC Bus-disconnector can up to 63 KA, carry out the standard: Q/SZD 001-2000《HD28 DC Bus-disconnector》patent of State Intellectual Property Bureau（Patent No：ZL 00 2 61451.0），certificate of new products new technical appraisement and confirmation of the State Economic and Trade Commission( Shaan economic and trade commission 【2001】No.004), the products type attestation of trade department of Shanghai Electricity and Science Institute(Patent No:0200).
HD29 DC bridge-disconnector can up to 70 KA. The characteristic is advance structure, losses little of equipment, long lifetime, easy to install and maintain. The performance reach to the level of the same product overseas. This product has filled domestic gaps. Carry out the standard: Q/SZD 002-2001 (HD29 DC bridge-disconnector), patent of State Intellectual Property Bureau（Patent No：ZL 01 2 47059.7）
In 1997, the domestic occupation rate of market of high current disconnector in our company is 60%, the occupation rate of market of domestic same product is more than 80% in 1998, the occupation rate of market is more than 90% in 1999, the occupation rate of market is more than 90% in 2000, the occupation rate of market is more than 85% in 2001, the occupation rate of market is more than 80% in 2002, the occupation rate of market is more than 90% in 2003. Our company has produced bus-disconnector more than 3000 pieces, bridge-disconector more than 1000 pieces. 100,000 tons of national key projects in aluminum and chemical trade are all choose our bus-disconnector or bridge-disconnector.
We are the authorized distributor of Germany Ritter company’s short circuit switch. We are the authorized distributor of swiss ABB company’s sensor, commutate diode and thyristor. We are the authorized distributor of Bussmann company in aluminum trade in China.

Quality policy of our company: Improved continuously, developed constantly, guaranteed the technology lead of the products; controlled course strictly, make each product precisely; Serve wholeheartedly, guarantee customers are satisfied.