With solar heat steam curing ways, the curing kiln adjusts the curing temperature of each step automatically according to the science temperature control curve. The wall slab can be out of the kiln after 12 to 16 hours of maintenance and used in 72 hours.After the automatic curing system, the hydration reaction of wall board is sufficient.The compressive strength index of the wallboard can reach above 95% of the final strength (the index requirement of 28 days of natural curing).