Fascination About ท่อน้ำฝน
ซื้อวันนี้ส่งวันนี้ จำหน่ายโดย: โฮมโปร1. The very first thing you need to think about when building a concrete drain over a flat roof may be the slope with the roof. A flat roof will not be fully flat, mainly because it usually includes a slight slope to allow for water runoff.