双凹槽grc轻质隔墙板 dual-cavity grc lightweight partition board ; dual-cavity grc lightweight partition

grc轻质条板 lightweight grc strip slab

grc轻质墙板 grc light textured wall plank

grc轻质内墙板 grclight-weight interior wall panel

GRC轻质隔墙板 GRC light-weight partition board

grc轻质隔墙板 grc lightweight partition board