Jiangsu Suzhou Xinkunyuan Environmental Protection Technology Co., Ltd. is an environmental protection company specializing in the manufacture, sales and operation of sludge drying machines. In response to the further dewatering requirements of sludge after pressure filtration in the high-risk sludge disposal process, the sludge drying machine with good energy-saving effect has been developed, reflecting the recycling of energy, and the sludge after drying is environmentally friendly and non-polluting. The heat pump heating technology has been successfully applied to sludge.