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VALTECCN is an industrial butterfly valve manufacturer that provide all kinds of butterfly valves. Our butterfly valve factory producing concentric butterfly valves, eccentric (double or triple Offset) butterfly valves, wafer-style butterfly valves, lug(semi or full) butterfly valves, flanged and double flanged butterfly valves. Our butterfly valve factory in China adhere to JIS, JPI, API, ASME, EN, ISO standards, under a ISO9001 Quality Assurance program, it assures our butterfly valves are produced all according or exceed the international standards. Our products have been sold worldwide for a wide range of applications in natural gas, oil, oil refining, chemical, marine, power generation and pipeline transportation industries.