MARK OIL CO., LTD. is a leading manufacturer of top-quality industrial-use and auto parts for clients all around the world. Founded in 1984, we have implemented ISO-9001 standards to ensure our product quality and production efficiency. We develop, manufacture, and sell a wide array of superior, high-performance seals, and also endeavor to develop firm long-term business relationships with all our clients. Our industrial-use and auto parts, including engine parts, transmission parts, and body parts (oil seals, O-rings, packing, valve seals, bushings, truck seals, etc.), are designed for virtua
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