Changzhou National High-tech Zone recently released a message that a new type of high-efficiency heat exchange tube-copper-aluminum composite tube technology developed by a company in this area was fully affirmed by an important expert group. If the national air conditioner manufacturer is fully adopted, it can be used annually. More than 2 billion kilowatt hours of energy saving. According to reports, the technology can be applied to air-conditioning and refrigeration industries, and is also of great value in energy development (thermal power, nuclear power), petrochemicals, electronics, cables, building waterway management, and environmental protection.