Ningxia Ningxue Refrigeration Equipment Co., Ltd. is located in Ningxia economic and technological development zone of Yinchuan city. Ningxue is a professional manufacture of insulation PU panel and kinds of cold room doors. Our PU panel annual output past 300 thousand square meters, there are kinds of sheet steel available including color steel sheets, stainless steel sheets and embossed aluminum sheets etc. Recently years, according to requirement of market development, we researched, ...