حفرة بلاستيكية عمياء ذات جودة جيدة تستخدم في السكة الحديد

Product Description Plastic blind ditch overcomes the shortcomings of traditional blind trenches. Widely used in engineering & construction projects.Its advantages are as follows: High surface open porosity Good water collection Large porosity Good drainage Excelent pressure resistance Nice flexibility Good adaptability & durability Lightweight Easy installation & high work efficiency Product Application 1. Highway and rail-way subgrade shoulders. 2. Tunnels,subway undergroun