China powerless roof turbine ventilator fans

{"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"}}

{"pid":"9350801","cid":"17056","pimg_url":"\/\/img1.tradegrowthhub.com\/06\/c0\/c55765979780\/product\/14810544_s-w400xh400.jpg","name":"300mm Powerless Turbine Ventilation Roof Fan","company_name":"Liaocheng Wantong Ventilation Equipment Co., Ltd","attrs":{"Price":"the competitive price, factory price","MOQ":"10 piece","Delivery Time":"within 3-10 days","Brand":"\"WT\u201d & \u201cBEST\""}}

{"pid":"26846558","cid":"164154","pimg_url":"\/\/img1.tradegrowthhub.com\/9a\/00\/a6ce44ff77f9\/product\/96016789_s-w400xh400.jpg","name":"Powerless Hotels Stainless Steel Roof Turbine Ventilation Fan","company_name":"Qingzhou Xinwo Trading Co.,ltd.","attrs":{"Price":"Negotiable","MOQ":"2.0 Sets","Delivery Time":"Negotiable","Brand":"Xinwo"}}

{"pid":"31959599","cid":"220152","pimg_url":"\/\/img1.tradegrowthhub.com\/9b\/46\/4616e83989b2\/product\/121299384_s-w400xh400.jpg","name":"Unpowered Metal Ventilation Warehouse Roof Ventilation Roof Turbine Wind Powerless Fan No Power Hood Duct Cover","company_name":"Shandong Handun Environmental Technology Co., Ltd.","attrs":{"Price":"Negotiable","MOQ":"10.0 sets","Delivery Time":"Negotiable","Brand":"Handun"}}

{"pid":"21817612","cid":"114627","pimg_url":"\/\/img1.tradegrowthhub.com\/cb\/91\/175ca31b2084\/product\/73119583_s-w400xh400.jpg","name":"Factory 304 Stainless Steel Roof Ventilation Fan Metal Turbine Unpowered Ignition Wind Powerless Fan","company_name":"Guangzhou Banfu New Energy Technology Co., Ltd.","attrs":{"Price":"$49.00(>=1 Sets)","MOQ":"1 Set","Delivery Time":"Negotiable","Brand":"BANFU"}}