... hours 3.fine welding Description: resin waterproof frontlit led channel letter 1. The letters all 304 stainless steel for the side ... front , no rust;2. Laser cutting ,the stainless steel channel letter will smooth line;3. Fine welding;4. Inner high quality ... fixing Application:This kind of resin waterproof frontlit led channel letter for: Shops, business, hotel, auto dealers, hospital, school. Real ...