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NDV's representative product, the diaphragm valves, are superior in "air-tightness," "maintenance," and "corrosion and chemical resistance." Since it can be configured by selecting from a wide range of materials according to fluid and usage conditions, it is applicable to a wide range of fields and has excellent cost performance. Based on our extensive experience and achievements cultivated over our long history, we provide high-quality, high-performance and reliable products.