On 8 April China Valves Technology Inc. completed the acquisition of Shanghai Pudong Hanwei Valve Co. Ltd, a Shanghai-based valve manufacturer with several patents for high-tech valve specifications in the petrochemical and bioengineering industries, for approximately USD 21 million. Hanwei Valve was established in 1992 and produces more than 20 series of valve products in over 6000 different sizes ranging from 0.38in to 116in in diameter. Its main products include ball valves, check valves, butterfly valves, gate valves and other general purpose valves for a variety of applications, including oil refineries, chemical production and transport, electric power plants, and water supply. Hanwei Valve owns patents for a 24-way rotary valve used in simulating moving bed molecular sieve absorption-separation units in large-scale petrochemical equipment, for chromatogram separation units used in bioengineering, and for fully welded ball valves used in long distance gas pipelines. Hanwei Valve is the sole producer of the fully-welded ball valve and 24-way rotary valve in China.