Custom Double Chain Sprocket Tianjin OuNaiDa Transmissions Machinery Trading Co., Ltd. Our company is established in 2008 with abundant registered capital-Tianjin, with 20years鈥?manufacturing experience and 14years' export experience. 20years Manufacturing experience 100 Enterprise employees 300+ Overseas distributor 14years Export experience Our Factory Our if no drawing, we can provide drawing as customer dimension.Custom Double Chain Sprocket website:http://www.tjondgear.com/