Located in Shandong Province, North China, Defu Intelligent Technology (Shandong) Co., Ltd., covers an area of 80 acres with standard workshops over 35,000 square meters. Equipped with a complete set of advanced equipment, including Swiss CNC machining equipment, Japanese turning-milling composite processing equipment, German CNC grinder, Japanese three-coordinate measuring machine and so on, DEFU Air treat quality as top priority. Meanwhile advanced automotive electric air conditioning system environment simulation laboratories have been established.
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2026-07
Microchannel vs. Copper: Engineering the Most Efficient Heat Exchanger for Truck AC In the world of B2B HVAC engineering, the choice of materials dictates the performance, weight, and longevity of the system. For truck air conditioning, where space i...
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21
2026-07
Navigating Anti-Idling Laws in North America with Electric APU Solutions In the complex landscape of North American logistics, regulatory compliance is a moving target. From the California Air Resources Board (CARB) to the Ontario Ministry of Transpo...
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20
2026-07
Slashing Idle Costs: A Guide for USA and Canadian Fleet Managers For fleet managers operating across the USA and Canada, the "hidden drain" on profitability isn't just high fuel prices—it's the cost of idling. Every hour a Class 8 truck idles t...
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