WIIK Public Company Limited, together with its subsidiaries, manufactures and distributes high density polyethylene (HDPE) pipes and related fittings, low density polyethylene pipes, polypropylene pipes, polybutylene pipes, and Weholite spiro pipes in Thailand. It operates through two segments, Polyethylene Pipe and Fittings Business, and Water Management Business. The company offers HDPE solid wall pipes used in both government and private Sectors in the field of water pipeline system, sewage, and cable conduit, etc.; structured wall HDPE pipes used for drainage pipe, sewage pipe, intake & outfall pipe, culvert pipe, manhole, ventilation pipe, relining pipe, and combined sewage overflow; and HDPE water tank for water management and fit for water collection as rainwater tank, sewage tank, wastewater treatment tank, and bio-gas tank. It also provides HDPE pipe welding and installation services; and consultancy, advisory, and servicing of HDPE pipe installation. In addition, the company engages in the water management and distribution business, as well as designs, constructs, and operates water supply systems. Further, it operates tap water production business with ultra-filtration and reverse osmosis systems. The company was formerly known as Wiik & Hoeglund Public Company Limited and changed its name to WIIK Public Company Limited in December 2019. WIIK Public Company Limited was founded in 1983 and is headquartered in Bangkok, Thailand.