In the 1960s and 1970s, rare dry weather occurred in the United States. In order to solve the problem of air conditioning cold and heat sources in drought-deficient areas, the United States took the lead in developing air-cooled chillers and replacing the cooling towers with air cooling. The name is: Air cool Chiller, referred to as Chiller!

In the history of air conditioning, the United States has developed and improved a central unit system with ducts, and has received strong support from air conditioner distributors and distributors who are installing and repairing unit air conditioning systems with ducts on site. WRAC is the simplest and cheapest system that can be easily purchased in retail stores and installed itself at high temperatures. At the same time, the ductless SRAC and SPAC have been developed and improved in Japan since the 1970s under the power of the US market. After that, equipment design and manufacturing technology was transferred to China in the 1990s, which was formed by working with local companies including major components such as compressors, heat exchangers, electric machines, fine valves and electronic controllers. The joint venture company carried out.

In the 1990s, China also absorbed advanced high-tech from large air-conditioning equipment from other advanced countries, and formed a joint venture with most large companies in the United States. Today, China is already a top country, and her major local factories and joint ventures manufacture a large number of SRAC and SPAC to meet the growing domestic market and export needs. In the past few years, Japan has exported SRAC and SPAC units to China, Europe and the Middle East to establish new markets. However, China is now the largest exporter of air conditioners. In 2001, the total number of WRAC, SRAC and SPAC units exported reached 5 million units. In 2002, 750 or 8 million units were expected to be exported, and Japan is losing its export status.

Common Rail Test Bench

Common rail test bench is becoming popular in the automotive after-Service market.

Common rail injection system is an electronic diesel injection system, which is adopted on most modern vehicles. To diagnose and maintain the electronic injector, common rail injector test bench is the perfect choice.

Common rail diesel test bench could test both solenoid and piezo injector, applicable to Euro 3 Euro 4 Euro 5 Euro 6, all brands including Bosch, Delphi, Denso, Cummins, Caterpillar etc.

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