Allrich Industrial Corp. is an experienced manufacturer in Taiwan for over 30 years. SW is our brand. We are the leading manufacturer of Threaded/Solder Fittings, Valve and Flange. Our main products include Fitting, Pressure Reducing Valve, Air Vent, Water Hammer Arrestor, Flange and so on. Depend on the different products, we also provide the wide size range : 1/8 to 4" (Depend of the products) OEM is also welcome. We are sure our great experence can provide more valuable to our customer. Welcome to inquiry for any product information (ex. Specification, Price, Packing List). You can also visit our web site : www.allrich.com.tw