Bidding For The Purchase Of Synthetic Fiber Filter Sheets, Size 200 Grams Per Square Meter And Others, 4 Items, For The Construction Of The Pak Khlong Motabaek Canal, Along With An Accompanying Building, Kamphaeng Phet Irrigation Project, Pho Thong Subdistrict, Pang Sila Thong District, Kamphaeng Phet Province, By Electronic Bidding Method.