YUEQING YUNSI Trading CO. is an enterprise specializing in the research and development and manufacture of connectors. We have more than 15 years export business experience . At present, YUNSI has obtained ISO 9001 system certification and C E, C Q C, RoHS. The company has established long-term friendly business relations with many well-known enterprises at domestic market and abroad for many years since its establishment. And has been continuously absorbing all kinds of talents, improving product quality, improving staff skills, in order to develop and grow. Strict quality assurance system and perfect management system, high-quality product after-sales service are our foundation.Our company in line with the principle of "Quality first, Reputation first", to provide customers with various products of high quality . Till now our main products are kinds of connectors, such as fast connectors, heavy duty connectors,waterproof connectors and junction boxes and so on.