Zhongyu Fire-fighting Equipment Co., Ltd. (http://www.zyfire.com)is a Chinese manufacturer and exporter of fire hose,PVC hose, coupling, branchpipe . our coulping includes:1. Machino: Japanese type 1-1/2", 2", 2-1/2", 3"2. Nakajima: Shipyard use 1-1/2", 2", 2-1/2"3. John Morris: Bic couplings 1-1/2", 2", 2-1/2"4. Storz: Germany system 1-1/2", 2", 2-1/2"5. Expansion type: pin or rocker lug. 1-1/2", 2", 2-1/2Features: Good quality. Fair price. On time delivery. Durable. Variety choic