1981, Yuanyu was established in Sanchong City, Taipei county, Taiwan. Yuanyu manufactured motor and machine rubber molded parts in the initial stage.
1983, Yuanyu gained its customers' trust and gained an fine reputation with its fine quality, reasonable price, and considerate service. Due to the space of original factory was no longer suits, Yuanyu moved to a new factory and increased its employees and equipments.
1987, The space of factory once again insufficient due to Yuanyu's business expanded continuously. Therefore, Yuanyu relocated in Sulin City, Taipei County (the current location). Additionally, Yuanyu purchased rubber injection molding machines, nitrogen de-flashing machine, and employed more professional to improve the quality of overall.
1992, As electronics industry develops rapidly, Yuanyu increased manufacturing electronic industry rubber porducts. Yuanyu's products were sold internal and oversea market with high evaluation.
1993, Chenchen Enterprise Co. Ltd., one of the branch companies of Yuanyu enterprise group was established. Chenchen manufactures and tades rubber products.
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 fulfill RoHS directive of EU.
2008, ISO-9001 : 2008 Quality System certified. Several examining testers added: Ozone Tester Chamber,Rotorless Rheometer, Computerized Tensile Strength Tester, Aging Oven Tester, Oil Bath Tester.
2010, Carbon Black Dispersion Tester added. Expansion Second Plant of 1,000 square meters. New injection machines and Vacuum compression machines added.