On September 14, 2020, Mcwell and Chongqing Huitong signed a formal contract to undertake their triangular smoke vent skylights project.

Chongqing Huitong Triangle smoke vent skylights Project is located in Tongliang District, Chongqing City. The project is constructed in two phases and is currently under construction in the first phase. Chongqing Huitong selected Mcwell's patented

product—"nail-free and glue-free waterproof structure" smoke ventilator. It also means that the technology of "nail-free and glue-free waterproof structure" has been widely recognized in Chongqing roof smoke vent market.

"Nail-free and glue-free waterproof structure" means that the window sash and window of the roof fire vents do not use silica gel, do not use self-tapping nails, do not drill, and do not rivet. Relying on its own structural structure, it fundamentally

solves the hidden danger of leakage. The Mcwell smoke vents have the characteristics of large ventilation and smoke

exhaust area and good self-cleaning. It is widely used in industrial plants in electric power, steel, metallurgy, chemical, machinery, manufacturing and other industries.