Our company, YuYao No.4 Instrument Factory, has specialized in the Soleniod Valve for the past more than 40 years in China since in 1965 and can supply your with many kinds of valves, such as the RSC used by water dispenser, especially the YSF series , which has gained the TUV certificate of German including the coffee machinery.What&＃039;s more , we can guarantee that our products are superior in quality and in price compared with those of other manufacturers. Our factory manufactures the products as per the ISO9001 quality management system and CE standard, most of which have been exporting to more than twenty countries and areas, such as USA, France, UK, Germany, Australia, Austria, Pakistan, Taiwan, etc. So regarding the quality, you can be assured. Also, we can customize products to cater various requirements of our customers