Sliding door/cold room door: 1.reasonable selection 2.beautiful appearance 3.durable,stainless steel Sliding door/cold room door Place of Origin: Jiangsu China (Mainland ... 50mm,75mm,100mm,120mm,150mm,200mm quality: highSliding door internal polyurethane foam overall.Application industry:Food, industrial, ... working temperature is -55°C~+135°C.door board:Using polyurethane foam with panel overall, ...