CH. Karnchang Public Company Limited was incorporated as a limited company on November 27, 1972 to engage in general construction business. Initially, the Company’s scope of work covered construction of buildings and general civil works and its major clients were government agencies, such as, the Royal Thai Army and the Royal Thai Air Force. The achievements bringing reputation to the Company in the initial period included, for example, various buildings, hospitals and public utilities for the Royal Thai Army and the television station building for the Mass Communication Organization of Thailand (MCOT).

    Subsequently, the Company realized the need to enlarge the scope of its business operations for long-term prosperity. In this respect, in the year 1981, the Company entered into a joint venture with Tokyu Construction Co., Ltd., one of Japan’s top ten construction contractors, for the purpose of acceptance of technology transfer and business alliance.

    Since the year 1994, at which time the Company was conversed to be the public company limited, the Company has been rapidly growing and improving its capabilities by both work management and development of human resources, as well as construction technology development through its joint ventures with foreign companies which possess expertise, to improve the Company’s work potential. This enabled the Company to expand its scope of engagements to the point at which the Company became one of a few construction contractors which were sufficiently well-prepared to carry out sophisticated construction requiring advanced construction technology, such as, large scale infrastructure projects. In addition to the contracts for normal large scale infrastructure projects, the Company also developed its capabilities in terms of both engineering and management, allowing the Company to operate projects on a design and construction basis or the so-called turnkey, concession projects on a build-transfer-operate (BTO), build-operate-transfer (BOT), build-own-operate (BOO) and acquire-operate-transfer (AOT) basis, as well as other small, medium and large scale projects. Among these outstanding and successful projects were, for example, the Bang Na - Chon Buri Expressway Construction Project; Concession Project for Water Production and Distribution for the Provincial Waterworks Authority in Nakhon Pathom, Samut Sakhon and Pathum Thani Provinces; the MRTA Initial System Project, Chaloem Ratchamongkhon Line; the Development Project for Enhancement of the Capabilities of the Bangkok International Airport; the Park and Ride Building Construction Project for Bangkok Metro Public Company Limited; the Bang Pli – Suksawad (Bang Pli – Bang Khun Thien) Expressway Project; and the Concession Project for Electricity Generation and Distribution for the Electricity Generating Authority of Thailand.