"polyisobutylene " CNS Standards List |
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CNS 5240
2023 Edition Method of test for polyisobutylene 聚異丁烯檢驗法 |
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CNS 5227
2023 Edition polyisobutylene 聚異丁烯 |
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CNS 5240
2018 Edition Method of Test for polyisobutylene 聚異丁烯檢驗法 |
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CNS 10639
2017 Edition polyisobutylene 水泥混和用聚合物擴散材料 |
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