We always provide best control plan for central air-conditioner manufacturers. Our profound comprehension for refrigeration technics about its control and modulation rule as well as our creative research ability are often highly praised by same trade. Many of our innovative technicalfruit are wildly used by same profession, including as following:Representative cases:1) Control system: We spent three years cooperating with Dalian Iceberg Group and finally exploit Hakawa units successfully (integrated unit of heating, air-conditioner, and hot-water supply). This unit is designed specially for family, and one unit can provide cool and heat simultaneously with high efficiency.2) Heat pump hot water unit, which we collaborated with many manufactures, has run steadily in last 2 years.3) Multiple compressor (two to four compressors) parallel connection control system4) Parallel connection compressor can not only reduce the cost of product but also improve efficiency when under full load. Now we have two to four compressors parallel connection control system which has worked for about 3 years without failure.We have special support in central air-conditioner trade and hope that we can cooperate with many more manufacturers to seeking mutual development. producing area:China payment:T/T or L/C supplying capacity:10,000pcs/month