Company Description: China Jinan Shuangyi Environment Engineering Co.,Ltd,as a manufacturer we sincerely hope could offer you more supports and cooperate well in near future. We are one of the most professional manufacturer of fan coil units,water tanks, air ventilating facility and accessories, FRP products and cooling tower, with more than 25 years experience in the field, products have passed the ISO9001/ISO14001,meanwhile we enjoying good reputation, can highly guarantee with our high of quality and servi |