Ningbo east ventilation engineering co., LTD. (Yuyao DongFang ventilation engineering co., LTD), is a professional engaged in ventilation engineering design, complete sets of installation and metal component manufacturing enterprise, is a professional manufacturer of spiral duct and accessories, is the director unit of industry standard production of ventilation industry at home and abroad with the best the most perfect manufacturing process.Company owns the most advanced Swiss SPIRO full metal spiral duct, accessories production lines, including JRX automatic pipe forming machine, R1530 plasma cutting machine, CU - 30 (straight line and curve) stitch welding machine, COMB triangle lock machine, I stand before locking machine, CNC spinning machine and so on, it also introduced the Japanese AMD CNC punching machine and metal sheet metal numerical control production equipment.In the excellent hardware environment, the company also increases the upgrade of the software environment, in accordance with the ISO9001 international quality system standard established a perfect quality assurance system, and in 2009 won the well-known trademarks in ningbo.Company products are widely used in ventilation, air conditioning, purification, dust removal, each ventilated areas, such as material conveying to the airport, gymnasium, exhibition center, supermarket, textile factory and other large projects provides the omni-directional high-quality service.