Qingdao Hairunjie Disinfection and Purification Engineering Co., Ltd. specializes in the research, development, design and installation of rock wool color steel plate, polyurethane color steel plate, glass-magnesium color steel plate, phenolic color steel plate, foam color steel plate, magnesium oxysulfide color steel plate, silicon salt color steel plate, honeycomb plate, cold storage board, oven plate, muffler plate, etc. At the same time, it is also an enterprise qualified for air purificatio