Since Hitachi produced the first refrigeration equipment in 1942, it has been committed to the development of higher quality compressors. In 1982, the first generation scroll compressor was developed, which brought a revolution in the core components of environmental testing products. In 2006, a new generation of Excellent series environmental testing equipment with smaller noise, lower vibration and more energy-saving energy consumption was introduced to the market equipped with a new generation of scroll compressors. Today, Hitachi environmental testing equipment, as a part of Hitachi air conditioner series products with world-class quality, is making continuous progress for lower environmental pollution and lower energy consumption. Hitachi's environmental testing equipment "Cosmopia" responds to the requirements of the times with performance and reliability. Hitachi's existing products include: Cosmopia C type, constant temperature and humidity chamber, rapid temperature change chamber, battery explosion-proof chamber, super large constant temperature and humidity chamber, etc. Cosmopia S type, three-box thermal shock test chamber, liquid tank thermal shock test chamber, excellent thermal shock test chamber, etc. Cosmopia R type, large walk-in constant temperature and humidity chamber, integrated walk-in constant temperature and humidity chamber, air-cooled constant temperature and humidity chamber. Hitachi environmental testing equipment is used in many fields such as semiconductors, electronic products, automotive electronics, aerospace engineering, bioengineering, etc. We will try our best to produce high-functional products for high-level development and research