... welding. No rag ,no welding scar, and the anti-electric-state power was imported from Germany ,painted to the metal bf flow ... make sure all the products anti-UV, anti-aging ,anti-electric state, non-toxic, the quality is better than the ... playground equipments, Inflatable bounce, bodybuilding equipment, water park, trampoline, electric toys and so on.All products passed ISO9001 International Quality ...