... . Changshan Hongfeng Tubing Co., Ltd. (HT for short), established in 2003, is a professional manufacturer of various brass fittings.HT provides the products ... , including: pipe fittings, compression fittings, flare fittings, brass union, elbow, tee, cross, nut, cap, plug, coupling, adapters, reducers, nipples, ferrule, sleeve, fasteners, valves, taps and ...