+ Is a self-flowing drainage system by drains, drainage ditches located under sidewalks in the IZ, with the function of transporting rainwater out of the IZs quickly to avoid flooding.
+ Designed and built separately from the industrial wastewater system
+ Completely built along the roads in the IZ with:

• Drain diameter: from D600-D2000
• Total length: 14,155m
• Number of manholes: 617 holes, with safety lids

The system ensures the technical requirements as prescribed, helps to drain well in the rainy season, creating favorable conditions for production activities of enterprises in the industrial park.