Shenzhen Tiansong Group is an investment company with business scope in engineering, product manufacturing, trade, investing etc, engages in research and development, manufacturing and promotion of energy-saving and environment protection products to push forward our career by science and technology investment. In recent years our group invested a large sum of capital and human resource in ground source heat pump industry, with two company engaging in related heat pump air conditioning business: Shenzhen J&H Geothermal Energy Industry Technology Co., Ltd., professional enterprises engaging in research, development, manufacturing and promotion of heat pump unit; and Shenzhen Dasheng Hi-tech Engineering Co, . Ltd., design, construction and installation of heat pump.

Shenzhen J&H Geothermal Energy Industy Technology Co, . Ltd., being at the leading position in domestic heat pump industry and subvert traditional heat transfer mode of air conditioner by innovative, scientific spirit and absorption of advanced foreign manufacturing technology, manufacturing independently domestic and commercial central air-conditioning with various specification and multi-purpose. Main products of J&H including: household ground source heat pump, household and commercial triple-generation heat pump, commercial geothermal heat pump, heat water and cooling unit for air-to-water heat pump etc. among which the complex cold source heat pump technology takes the leading position globally. Our company stands on south China, radiating several important regions such as east China, north China, positively pushing forward overseas market, keep in mind the aim of "energy saving benefits the whole world", providing our customers with the best heat pump central air-conditioner!

Shenzhen Dasheng Hi-tech Engineering Co., Ltd. (DSAST) was founded in 1993, based on geotechnical, environment, geothermal, electro-mechanical and pipeline engineering, innovating and integrating advanced technology in geothermal heat pump, energy saving, heat recovery and intellectual control as well as underground heat exchange, pipeline engineering. Which take a leading position in domestic heat energy utilization engineering field.

Our company has passed ISO9001: 2000 Quality Management System Authentication, China Metrological Authentication (CMA) and Safe-Producing Permission. possessing rich-experienced professional technicians, advanced laboratory and all kinds of construction facilities. We also obtained numbers of awards and honors, In 2004 DSAST was named "China's Integrity Brand", in 2005, has been named " Top 10 enterprises in Shenzhen Survey and Design Industry ", "Hi-tech Enterprises in Shenzhen City" and "Software Development Enterprise", and obtained " Certificate for Enterprise of Observing Contract and Valuing Credit in Shenzhen", "Certificate for Enterprise of Observing Contract and Valuing Credit in Guangdong Province" etc.