承揽大小型房屋、地下室防水维修、维护和各种防水​‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌​‌‌工程设计