Sparrow Calvo Environmental Technology Group is a depth of water treatment technology, water, household electrical appliances production based high-tech enterprise group. The Group was established in 2004, under the jurisdiction of the bird Calvo (Beijing) Environmental Protection Technology Co., Ltd., two subsidiaries of the bird Calvo (Hubei) Co., Ltd. of environmental, with dozens of Tsinghua University as the background, Germany and the United States, senior water treatment technical experts to participate in professional R & D team composed of the core of bird Calvo double membrane reverse osmosis processing technology and that heat inverter technology to enjoy a national patent. 
 Bird Calvo (Hubei), Environmental Protection Technology Co., Ltd. is located in Hubei Province (national) Xiangyang Economic and Technological Development Zone Xiangzhou Avenue, a total investment of 150 million yuan, covers an area of ??148 acres, with six covers an area of ??30,000 square meters of modern production workshop and two international R & D office buildings, advanced technology, first-class equipment. Purification provides an annual output of hot water boilers 60000, home, commercial water purifier 10 million units, more than 10,000 sets of water treatment engineering equipment, is currently the largest dual-membrane purification, thermal water boiler R & D and production base