automatic close door's structure is simple,it has ... 50mm,75mm,100mm,120mm,150mm,200mm quality: highSliding door internal polyurethane foam overall.Application industry:Food, industrial, ... term working temperature is -55°C~+135°C.door board:Using polyurethane foam with panel overall, exterior ... box shell, the more enhance the overall effect.Door frame:Using aluminum alloy production, appearance is neat ...