Shenzhen Watsun Filtration Co., Ltd. is a manufacturer of filters used for heavy-duty trucks and buses, engineering machinery, gas turbine and generator with well-equipped testing facilities and strong technical force.With a wide range, good quality, reasonable prices and stylish designs, our products are extensively used in filtration field and other industries.Our products are widely recognized and trusted by users and can meet continuously changing economic and social needs.Watsun laboratory has been engage in filter R&D since 1996 and has brought out advanced testing theories and testing methods. As Watsun laboratory has the complete and advanced testing equipment, we can test all filter performance, filtration media, rubber & plastic parts and so on under EN779, ISO and GB testing standards. Watsun is one of the most advanced laboratories in China.We welcome new and old customers from all walks of life to contact us for future business relationships and mutual success!