Construction work laying water pipes and related work to reduce water loss, 1 job, 3 routes: 1. Soi Kaeo Charoen, Khum Thong-Lam Toiting Road, Khum Thong Subdistrict, Lat Krabang District, Bangkok 2. Soi Sri Borisut Industry Company, Pracha Phatthana Road, Thap Yao Subdistrict, Lat Krabang District, Bangkok 3. Soi Luang Phaeng 3 (Khum Thong), Luang Phaeng Road, Thap Yao Subdistrict, Lat Krabang District, Bangkok, Suvarnabhumi Waterworks Branch Office area, No. P55-11-68