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Donghai Has Been Awarded As Zhejiang Rubber Ingredient Testing Center. It Has Passed The Quality Certification. After More Than 30 Years Of Development, It Has Successfully Transformed From A Single Anti-scorching Agent Production Company To A Professional Production Company Of Rubber Accelerator, Antioxidant, Anti Coking Agent, Plasticizer, Adhesive, Anti Fatigue Agent And A Variety Of Processing Aids.