... High quality of intensity No radioactive property The calcium silicate ceiling tiles:We produce the calcium silicate board with the mould,the main material ... very strong,not cause damage easily.The specification of the calcium silicate board:1)Size:595x595mm,603x603mm,595x1195mm,1200x1200mm2)Thickness:8mm,9mm ... .7)Delivery date:30 days after received the 30% deposit. Calcium silicate ceiling tile