Application of large walk-in high and low temperature laboratory products: Large walk-in high and low temperature laboratories are mainly used for adaptability testing of electrical and electronic products, their raw components, and other materials during storage, transportation, and use in high temperature, low temperature, and cyclic environments. This testing equipment is mainly used to conduct environmental simulation tests on the physical and other related characteristics of products under low temperature, high temperature, and cyclic conditions in accordance with national standards or user defined requirements. After testing, the performance of the product is judged through inspection to determine whether it still meets the predetermined requirements, for product design, improvement, identification, and factory inspection. Product features: The large walk-in high and low temperature laboratory has an overall beautiful and elegant appearance. The insulation layer is made of hard polyurethane foam with a small amount of ultra-fine glass wool, which has the characteristics of high strength and good insulation. This device adopts a standardized multifunctional design, with program operation and constant operation functions. The main controller adopts an imported dedicated touch screen temperature controller with LCD display, communication interface, large capacity program, simple operation, and users can customize temperature control curves for temperature testing.