... requirement, the operable time of the plaster gypsum and the glue gypsum can be prolonged for one to several ... the plaster gypsum, the glue gypsum, the gypsum putty, the prefabricated gypsum components, the gypsum stuffing materials, the gypsum model broad, the gypsum decoration ... : One year 6. TransportationThis product is non-toxin and non-flammable, so the transportation requirement is general.