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  • ASTM D3349-2021Standard Test Method for Absorption Coefficient of Ethylene Polymer Material Pigmented with C...2022-03-31
  • BS EN IEC 60851-1-2021Winding wires. Test methods. General2022-03-31
  • QB/T 5603-2021柔印紫外光固化油墨Flexo UV curing ink2022-03-31
  • IEC/TR 62039-2021Selection guidelines for polymeric materials for outdoor use under HV stress2022-03-31
  • ISO/IEC 20919-2021Information technology — Linear tape file system (LTFS) Format specification2022-03-31
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  • GB/T 39976-2021蒸发冷却式新风空调设备Evaporation cooling outdoor air conditioning equipment2022-03-31
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  • JIS K0311-2020/Amd 1-2021固定辐射源中4至8-氯代二苯并-对二氧芑、4至8-氯代二苯并呋喃和类二氧芑的多氯联苯并的含...2022-03-31
  • ISO 12404-2021Soil and waste — Guidance on the selection and application of screening methods2022-03-31
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