Contract for the construction of reinforced concrete drainage with reinforced concrete cover (front road Subdistrict Health Promoting Hospital Mae Na Chon) in Mae Na Chon Village No. 5, width 0.50 m, depth 0.65 m, thickness 0.10 m, length 100.00 m, and laying of 0.60 m drainage pipes, 5 pieces using the specific procurement method.pdf
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