COMPANY PROFILE
Founded in 1963, Shuang Jung Industrial Co., Ltd. was the leading piston-ring manufacturer in Taiwan in the early 60s and 70s, handling development, production and marketing on its own. Through years of constant R&D and technological cooperation with overseas companies, we now utilize the most advanced automated production equipment, and guarantee that our products meet all high-standard market demands in terms of materials, quality, accuracy, and stability, the result of integrated production and quality control from material selection and casting to the completion of products.Available in 30.0mm to 110.0mm diameters, our piston rings are marketed worldwide and have established a solid reputation under our S.P.R. brand. We supply a wide collection of engine piston rings for sprayers, lawnmowers, agricultural machinery, motorcycles, automobiles, air compressors, and ships, as well as pressure rings for gravity hydraulic machinery. Custom requirements on designs and specifications are also welcome.1. Our products include: #100, 300#, #500, #555, #700, #777 (NPR, TP, RIK types)2. The materials we use include: FC25 cast-iron rings, FCD spheroidal graphite cast iron rings, ST chrome molybdenum alloy rings, ST nitrided rings, ST steel-sheet oil rings, and our patented five-piece #777 oil rings. News design patent No. 196705.With four decades in the industry, we are a steadily growing company you can rely on. Now applying for ISO 9002 accreditation, we sincerely hope to cooperate with players in the field at home and abroad for further development in the global market.