... simple structure 2.reasonable selection 3.beautiful appearance. Automatic close sliding door for cold roomPlace of Origin: Jiangsu China (Mainland ... : 50mm,75mm,100mm,120mm,150mm,200mm quality: highSliding door internal polyurethane foam overall.Application industry:Food, industrial, ... box shell, the more enhance the overall effect.Door frame:Using aluminum alloy production, appearance is neat ...