China paper surfaced gypsum board production line 6 million/year small investment high efficiency low energy consumption China paper surfaced gypsum board production line 6 million/year Technical parameter:1) Thickness:6.5-15mm Width:900-1220m Length:2400-3000mm2) raw materials: gypsum powder.protection paper,modified starch,fiberglass,vesicant,white latex.3) Drying system: hot air and hot oil4) ...