1981, Yuanyu was established in Sanchong City, Taipei county, Taiwan. Yuanyu manufactured motor and machine rubber moulded parts in the initial stage.
1983, Yuanyu had gained its customers' trust and a widespread reputation with its fine quality, reasonable price, and considerate service. Since the space of the original factory was no longer suitable, Yuanyu moved to a new factory and increased its employees and equipment.
1987, The space of the factory was once again insufficient due to Yuanyu's continuous business expansion. Therefore, Yuanyu relocated to Shulin City, Taipei County (the current location). Meanwhile, Yuanyu purchased Rubber Injection Moulding Machines, Nitrogen De-flashing Machine, and employed more professionals to improve the quality of the products.
1992, As electronic industry developed rapidly, Yuanyu expanded its business in manufacturing electronic industrial rubber products. Yuanyu's products were sold in both internal and overseas markets with high ratings.
1993, Chenchen Enterprise Co. Ltd., one of the branches that manufactures and trades rubber products of Yuanyu enterprise group was established.
1999, ISO 9002 Quality System certified.
2000, ISO 9001 : 2000 Quality System certified. Yuanyu invests Zhideli Electronic (Suzhou) Co., Ltd. which manufactures rubber products for electronic industry in Suzhou, mainland China.
2005, Liquid Silicone Rubber (LSR) Injection Molding Machine equipped.
2007, Yuanyu imports SEIKO SEA1000A XRF X-RAY Analysis to ensure all the materials and products fulfil RoHS directive of EU.
2008, ISO-9001: 2008 Quality System certified. Several examining testers added: Ozone Tester Chamber, Rotorless Rheometer, Computerised Tensile Strength Tester, Aging Oven Tester, and Oil Bath Tester.
2010, Carbon Black Dispersion Tester added. Expanded a second factory of 1,000 square meters. New Injection Machines and Vacuum Compression Machines added.
2017, ISO-9001 : 2015 Quality System certified.