Xinxiang Risheng Filter Co., Ltd. has very excellent technical researchers. We have perfect detection equipment which can detect all our manufactured products one by one. We have been certified by ISO9001:2008 system. We also put a great deal of capital in developing the new products to meet market needs. Our products mainly are water filters, air filters, oil filters and other related products. We must emphasize that we have the unique way in processing the high flow filter and 70 inch water filter elements. For the liquid-liquid separation, we own a great honor in our country. We hope to...