Sidelong company focus on the producing the water heater in China. It was built in 2001 in Dalian, China. The factory ability is 1, 000, 000 units /year. Most equipment is from USA and Europe. A. Welding: Ability is 28 sec/unit. Vendor company name is "Jetline". The welding machine is use "Miler" and "Lincoln". B. Enamel: Vendor name is "Wagner", sand blaster machine is import from Germany too, name is "Monkusmith". C. Other facilities are very good too. D. Product: 13” (tank): 6L, 8L, 10L, 40L, 45L, 50L, 60L 15” (tank): 65L, 75L, 80L, 85, 100L 17” (tank): 120L, 150L, 200L, 250L 23.5” (tank): 300L, 400L, 450L SDL also can develop electrical instant water heater according your requirement. SDL already produced water heater for "Siemens", "Volcano", "Junkers" and "Dux" (Australia Brand). If you are looking for long team cooperation partner in China, SDL is your best choice. I hope we can cooperate with best quality and best price to your company. You can send some people to Dalian, China, or visit our web site: ***** or we can go to your company discuss face to face with your people for OEM business.