Heilongjiang Zhonghui Technology Development Co., Ltd. is an enterprise engaged in electrothermal film heating system. Under its jurisdiction, Heilongjiang Zhonghui Geothermal Co., Ltd., abbreviated as Zhonghui Geothermal in Chinese, is the world's largest production base of electrothermal plastic film and a leading enterprise in the field of healthy heating and low-carbon heating in China. Zhonghui Geothermal was established in 1999, located in Fangping High-tech Development Zone, Harbin. China electric heating industry is the only leading high-tech enterprise integrating scientific research, development, manufacturing, sales and installation.