ระบบระบายน้ำฝน - An Overview
Use wood stakes and Mason’s line or chalk line to make a sq. or rectangular shape around the marked area. Make sure the formwork is stage and safe. Whilst developing the formwork, make allowance for that slope in direction of the middle on the drain.ซื้อวันนี้ส่งวันนี้ จำหน่ายโดย: โฮ