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ROUNDSTAR new material successfully passed the IATF16949 recertification audit!Ring Star new material successfully passed the IATF16949 recertification audit! Market-oriented, quality-based, Customer-centric, brand-based value From June 7 to 10. Mr. Yang Shixiu, Senior Audit Director ofSGS Certification, visited Maoming Ring St...08-10 / 2021
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ROUNDSTAR Research and Development Center visited Sichuan Light Chemical University and the NationalRing Star Research and Development Center visited Sichuan Light Chemical University and the National Carbon Black Quality Supervision and Inspection Center for exchange and learning Maoming Ring Star New Materials Co., Ltd.April 26 Ring Star Research...08-10 / 2021
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