Category of specialized testing equipment used for environmental resistance evaluation and quality assurance of products in manufacturing industry. Including constant temperature and humidity chambers, thermal shock test machines, salt spray test machines, vibration test machines, UV irradiation test machines, waterproof and dustproof test equipment, these devices reproduce environmental stresses such as temperature, humidity, vibration, corrosion, and ultraviolet rays that products experience in actual usage environments to evaluate product reliability and durability. Capable of conducting tests compliant with environmental testing standards (JIS, ISO, ASTM) for automotive parts, electronic devices, metal materials, and resin components, these equipment groups are essential for quality verification during product development stages and pre-shipment inspection. Unlike general material testing machines and analytical instruments, they have structures specialized for environmental condition control and reproduction.