... over 300,000 pieces for the gypsum one-piece art ceiling, gypsum cornice, GRG mould, gypsum glue and so on. After long- ... term practice & endeavors of our company, we have developed our national patent product---Gypsum ... & Wide Varieties. Our main products are gypsum one-piece art ceiling , gypsum cornice, gypsum ceiling corner, decorative sideline, chair rail, ...