NB-QXHY as a domestic independent brand of quality plastic valve/pipe fittings manufactures, we are confident about the quality of our products. The quality of ours is as good as that of many other suppliers like Taiwan Sanking and LD valve. In addition, We have developed a comprehensive quality system to meet our high manufacturing standards. We have achieved the ISO9001, SGS, CNAS and BS. EN 1213 Certificates, which help us lead the industry more than 10 years. We can provide free samples, and the delivery time is quick and stable. Once you place the order, the products would be organized for production, and It will takes about 25-35 days. A good product needs to pass through pelleting raw materials, injection, inspection and packing. And inspection is something we attach great importance. In order to ensure the quality of the products that come out of our factory, all of them are manufactured in a strictly controlled process and monitored throughout the production process. According to the manufacturing process, the test is divided into three parts.