WIIK Public Co. Ltd. engages in the manufacture and distribution of high and low density polyethelene pipes and fittings. It operates through the Production Distribution and Pipe Installation Services, and Water Management segments. The Production Distribution and Pipe Installation Services segment involves in welding services for the product of high-density polyethylene pipe and fittings, low density polyethylene pipe, polypropylene pipe, polybutylene pipe, and weholite spiro pipe. The Water Management segment offers water distribution and water supply system, design construction, and operation of water supply system. The company was founded in 1983 and is headquartered in Bangkok, Thailand.