Valve is one of components used for fluid transmission, which is indispensable fluid control equipment in such industries as petroleum, chemical, power station, long-distance pipeline, shipbuilding, nuclear, various low-temperature projects, aerospace and marine oil extraction. China has a total number of over 6,000 valve companies with different sizes after a long-term development, ranking the first in the world.
As for products, China can produce valves with more than 3,000 models and 40,000 specifications, which can meet domestic market demand basically. China has made big progress in its ability to produce complete sets of valve, but China has still to rely on import of some special valves.
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