China wind driven no power roof turbine ventilator

{"pid":"43986294","cid":"341684","pimg_url":"\/\/img1.tradegrowthhub.com\/9d\/47\/e071efcc28d2\/product\/170140167_s-w400xh400.jpg","name":"Powerless Roof Ventilator Wind Driven Non Power Roof Turbine Exhaust Fan for Ventilation","company_name":"Jinan Shuangyi Environment Engineering Co., Ltd.","attrs":{"Price":"$52.80\/sets 1-19 sets","MOQ":"1 PC","Delivery Time":"Negotiable","Brand":"China Shuangyi"}}