With the continuous expansion of the company's overseas market, especially the large-scale entry into the US market this year, Envicool has carried out UL certification for EC series outdoor cabinet air conditioners, and passed smoothly. It laid a solid foundation for the company to further expand the US market. It has also become the first domestic outdoor cabinet air conditioner provider to pass the UL certification, which is the UL laboratory's recognition of the quality of Envicool products and a verification of the comprehensive strength of Envicool.