... Qingfeng patent energy ecnomizer which can save the energy by 20%.3.Novel materials: the cold room adopts glass reinforced fiber, stainless ... insulation, anti-corrosive, aging-resistant.4.Preseving heat: as the cold storage has excellent features, it has fast speed to lower ... , fruits, vegetables, industrial raw materials, and it is also the ideal cold room for low temperature experiment as well as ...