Mammoth, Inc., headquartered in Minnesota, U.S.A, was established in 1935 and is part of the CES (Commercial Environment Systems) Group of companies with 9 major brands with total 350 years' history and 18 production facilities around North America, Europe and China. CES Group belongs to Nortek, Inc, with an annual turnover of about US$2.5 Billion. For more than 70 years, Mammoth Inc. has been creating comfortable indoor climates throughout the world. From Beijing to Buffalo, we supply customers with high-quality heating, ventilating and air conditioning equipment. Each unit is customized to meet specific project requirements, incorporating the best we have to offer in innovation, quality, performance and value. Mammoth entered the Chinese market in 1997 to promote Water Sources Heat Pump products, engaged in promoting the usage of renewable energy and technologies. In 2001, Ma

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