Mianyang Longsheng Trading Co., Ltd. has independently developed and manufactured thread-type connectors since 2001. Examines the institution quality authentication after the national authority to be qualified, carries out the standard: GB13140.1-97, GB13140.2-98. In May of 2002, the product through the Chinese quality authentication center CQC authentication (CQC02002002612).

The accumulation makes each kind of model, the specification product surpasses 2 million. At present the main customer for the Changhong electric appliance company, and obtains the user the consistent high praise.

This company continues each kind to have the special request Thread-type connectors the design manufacture, meets the customer need. Welcome the new old customer to come the electricity, the incoming letter or comes to discuss the service personally.