Ningbo Yongxing Machinery & Valve Manufacture Co., Ltd. have been dedicating the production and marketing of valve fittings and the other general machinery parts since 1996 in China. Our main products include 360 and 90 degree rotating valve opening devices (worm gear box and gear box), grease fittings, blowdown fittings, screw plugs, valve stems and the other valve and piping fittings. We think our qualified products and competitive prices will help you to cut down your production cost and enhance the competitiveness of your products significantly.