Vongsayam Korsang Company Limited company had established on 2519 about the building construction and water supply system of the private sector and the public sector. The company had signed contract ceremony with Provincial Waterworks Authority (PWA) into the building construct and improved to expandtion waterworks at Udon bay , Chonburi province . That projects is the begining of company business on ceremony contract with the Provincial Waterworks Authority (PWA).
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