... no shrinkage 1) Raw materialsgypsum powder, gypsum retaining paper, fiber(wood fiber, paper fiber, fiber glass),cornstarch, vesicant, lightweight aggregate, citric ... heat insulation, moistureproof, fireproofs, water-resiatance, non-desulfuration, environmental protection, pure nature, non-radioactive; be used in hang ceiling, separating ... T deposit or L/C. pvc gypsum tile of floor, ceiling, partition