lying in gyumsun is incorrectly written and it should be written as "lying gypsum" being its meaning:
lying in gyumsun lying gypsumLa = modern construction requires each day lying easy to apply and durable from low to high performance thus reducing delivery time. It is so fulfilling the requirements of the modern construction can offer lying gypsum for high and low performance for works from large to small scale and in designs from home to commercial designs.
