Shandong where the sale from the vertical Grille * tripod is supplied from the vertical from the vertical Grille Grille is made of aluminum alloy, surface oxidation treatment can be based on customer requirements or spray, since the vertical Grille rely outlet louvers own weight natural droop, isolated indoor and outdoor air exchange, when the indoor air pressure is greater than the outside air pressure, air will exhaust louvers blowing outward, whereas indoor air pressure is less than the outdoor air pressure, air flow can not reverse flow into the room, from a single vertical Grille action to check. The product is widely used in hotels, financial centers, exhibition centers and other senior building; subways, tunnels, underground parking garage, air defense projects and other underground facilities; mechanical, electronic, electrical, chemical, textile, food, pharmaceutical, paper, rubber, metallurgical and other industrial enterprises. Ding positive industrial technology to high-quality service as the lifeline of the company's survival and development, adhere to provide high-quality, high efficiency service for every customer. Companies adhere to the "Ding Connaught solid, integrity and honesty" business purpose, and constantly promote product upgrading, the development of China's industry and make a contribution. Welcomed throughout the country to visit our company, integrity, mutual benefit and win-win!