Fuzhou Guosheng Metal Works Co., Ltd. is proud to be a major manufacturer hose fittings and accessories such as cam • and groove quick couplings, guillemin coupling, universal air coupling, King combination nipple etc. • In the year 2007 we have established a new factory (including casting and machining) for manufacturing cam and groove • quick couplings, which located in Fuzhou City, Fujian China. We have established...