Dong Mingzhu, Chairwoman of Gree Electric, has repeatedly emphasized that Gree air conditioners insist on using all-copper tubing and firmly reject aluminum tubing. This stance stems from a strong commitment to product quality and user safety. Copper tubing significantly outperforms aluminum in thermal conductivity, corrosion resistance, mechanical strength, and service life—especially under the high-temperature, high-pressure conditions typical in air conditioning systems, where copper offers greater stability and reliability. Although aluminum tubing is cheaper, it suffers from drawbacks such as susceptibility to oxidation, difficulty in welding, and lower pressure resistance, which can lead to refrigerant leaks, reduced efficiency, or even safety hazards. Dong believes companies should never sacrifice long-term reputation for short-term profits, and using copper is a demonstration of responsibility toward consumers. This ‘all-copper promise’ has become a cornerstone of Gree’s reputation for high-quality products and has earned significant consumer trust. Amid intense industry competition and cost pressures, Dong’s unwavering position reflects her ‘quality-first’ business philosophy and has helped raise awareness across the HVAC industry about the importance of core material standards.
格力电器董事长董明珠曾多次公开强调，格力空调坚持使用全铜管，坚决拒绝使用铝管。这一立场源于对产品品质和用户安全的高度重视。铜管在导热性能、耐腐蚀性、强度和使用寿命等方面显著优于铝管，尤其在高温高压的空调运行环境中，铜管更稳定可靠。虽然铝管成本更低，但其易氧化、焊接难度大、抗压能力弱等缺点，可能导致制冷剂泄漏、效率下降甚至安全隐患。董明珠认为，企业不能为短期利润牺牲长期信誉，坚持用铜是对消费者负责的表现。这一‘全铜承诺’也成为格力空调高品质形象的重要支撑，赢得了大量用户的信任。在行业竞争激烈、成本压力巨大的背景下，董明珠的坚持体现了其‘质量至上’的经营理念，也推动了整个空调行业对核心材料标准的关注与提升。
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