mineral fiber ceiling board non-flammable,sag resistance flawless appearance ISO9001:2000 ISO14001:2004 CE Fissured Mineral Fiber Ceiling Board:Our company mainly produce a variety of mineral wool boards, it has been proven by ISO9001, ISO14001, CE.Our products performance as follows:1. Types:·pin hole·fine fissured·sand and sand with hole·different shape boards2. Standard size: 300×300mm, 300× ...