การก่อสร้างโครงการสาธารณูปโภคเกี่ยวกับสายส่งไฟฟ้ากำลังและสายสัญญาณสื่อสาร

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CHAI ELECTRICAL SYSTEMS LIMITED PARTNERSHIP

CHOKCHAI YINGCHAROEN CONSTRUCTION COMPANY LIMITED

TRIPLE J ELECTRIC KHONKAEN CO., LTD.

ALPHA X GLOBAL CO., LTD.

TIVAKONTELTPHONE

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W.NUTTHAKIT LIMITED PARTNERSHIP

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SIAM SYMPOSIUM COMPANY LIMITED