Ventilation &Smoke Exhaust Duct

{"cid":"252900","pid":"34397678","pimg_url":"\/\/img1.tradegrowthhub.com\/83\/25\/5e07aa39297c\/product\/133076965_s-w400xh400.jpg","name":"Class A 12mm low density non-combustible calcium silicate board for fireproof duct and for steel beam column and steel structure fire protection","attrs":{"Price":"Negotiable","MOQ":"500 square meters","Delivery Time":"Negotiable","Brand":"KINGTEC"}}