(ภาษาไทย) ประกวดราคาจ้างก่อสร้างถนนคอนกรีตเสริมเหล็ก รอบวงเวียนช้างวารีกุญชร ด้วยวิธีประกวดราคาอิเล็กทรอนิกส์ (e-bidding)

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