Plastic hollow formwork is not practical, the cost is too high, the construction is inconvenient and heavy, and cement should be poured every time it is used up. Changing the size is a headache. Workers were still in a hurry when the formwork was removed, which still caused damage. Franchising agents are all liars, and many people have been cheated. The wording of the company contract, playing routines, and several friends around me were deeply hurt. Be careful.