The development of casting technology

Casting is a metal thermal processing technology that has been mastered by humans for a long time. It has a history of about 6,000 years. China has entered the heyday of bronze castings between about 1700 and 1000 BC, and the process has reached a fairly high level. The Shang

Detailed introduction of air source heat pump technology

Air source heat pump technology is an energy-saving and environmentally-friendly heating technology based on the inverse Carnot cycle principle. The air source heat pump system obtains a low-temperature heat source through natural energy (air heat storage), and becomes a high-

Large high-voltage submersible sewage pump is available in Changsha

In order to meet the needs of urban flood control and sewage (stain), and save the cost of pumping station project, the first batch of 10 600QW3000-40-500kW 10kV large-scale high-voltage dry operation jointly developed by Changsha Electric Machinery Co., Ltd. and Jiangsu Unive