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China supplier gypsum plant price pure natural plastergypsum powder Gypsum powder detailed information Item Specification Remarks Material Quality Natural Gypsum Mineral Stone W hiteness 7095 Powder to water ratio 10 . 6 Fineness 120 200 mesh Setting time 515 minutes Breaking Strength 2h Mpa 2.9 Expansion rate lt 0.15 Chemical Formula CaSO4.12H2O Fire resistance Non