It is suitable for electrical and electronic products and components to undergo plug resistance tests, adaptability tests under rapid temperature changes or gradual changes, and is particularly suitable for environmental stress screening (ESS) tests of electronic and electrical products, Reasonable structure, variable frequency wind speed regulation, fast cooling speed, imported refrigeration units and key accessories are imported international brands to improve operational reliability; Touch screen controller, simple operation, easy maintenance, fan overload, compressor delay and other protection functions; Automatic (manual) defrost can be set for the number of cycles and defrosts. Each product is customized according to customer requirements, ensuring the equipment's high efficiency and energy saving, and debugging and acceptance at the site to ensure the user's performance.