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    September 14, the renewal of Yangzhou city began installing a "smart angle valve" of the gas cylinders. This cylinder cylinder more than the traditional appearance of a liquid crystal display, in fact, is the addition of things technical. Angle valve cylinders from the filling can be stored inside, check to use the data recovery process, and filling stations, pneumatic gun, using the distribution system matching can be calculated to achieve the quality of filling, transporting process of tracking, calculation, and many use function. It is reported that the renewal of Yangzhou City, the first 1000, the future will be fully replaced the old cylinder.