Holcon GmbH, Werk Xanten — Xanten, Germany
| Certificate Number | 167-CSC24-2024 | Date of certification | Jul 1, 2024 |
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| Certificate Type | Concrete, Precast | Version | 3.0 Deutsch |
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| Certificate Number | 167-CSC24-2024 | Date of certification | Jul 1, 2024 |
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| Certificate Type | Concrete, Precast | Version | 3.0 Deutsch |
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| Certificate Number | 583-CSC24-2024 | Date of certification | Jul 1, 2024 |
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| Certificate Type | Concrete, Precast | Version | 3.0 Deutsch |
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| Certificate Number | 426-CSC24-2024 | Date of certification | Oct 14, 2024 |
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| Certificate Type | Aggregate | Version | 3.0 Deutsch |
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| Certificate Number | 1063-CSC21-2023 | Date of certification | Aug 9, 2023 |
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| Certificate Type | Cement | Version | 2.1 Deutsch |
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| Certificate Number | 1882-CSC24-2025 | Date of certification | Dec 6, 2025 |
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| Certificate Type | Cement | Version | 3.0 Deutsch |
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| Certificate Number | 1571-CSC24-2024 | Date of certification | Oct 22, 2024 |
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| Certificate Type | Concrete, Ready mixed | Version | 3.0 Deutsch |
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| Certificate Number | 1220-CSC21-2023 | Date of certification | Jan 21, 2024 |
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| Certificate Type | Cement | Version | 2.1 Türkçe |
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| Certificate Number | 1465-CSC24-2024 | Date of certification | Jun 17, 2024 |
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| Certificate Type | Concrete, Ready mixed | Version | 3.0 Deutsch |
| Client website — Certificate — R-Module — CO₂-Module | |||
| Certificate Number | 1205-CSC21-2023 | Date of certification | Jun 28, 2024 |
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| Certificate Type | Concrete, Ready mixed | Version | 2.1 Deutsch |
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| Certificate Number | 1229-CSC21-2023 | Date of certification | Jun 28, 2024 |
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| Certificate Type | Concrete, Ready mixed | Version | 2.1 Deutsch |
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| Certificate Number | 1230-CSC21-2023 | Date of certification | Jun 28, 2024 |
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| Certificate Type | Concrete, Ready mixed | Version | 2.1 Deutsch |
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| Certificate Number | 1231-CSC21-2023 | Date of certification | Jun 28, 2024 |
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| Certificate Type | Concrete, Ready mixed | Version | 2.1 Deutsch |
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| Certificate Number | 1232-CSC21-2023 | Date of certification | Jun 28, 2024 |
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| Certificate Type | Concrete, Ready mixed | Version | 2.1 Deutsch |
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| Certificate Number | 1233-CSC21-2023 | Date of certification | Jun 28, 2024 |
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| Certificate Type | Concrete, Ready mixed | Version | 2.1 Deutsch |
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| Certificate Number | 1313-CSC21-2023 | Date of certification | Apr 3, 2024 |
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| Certificate Type | Concrete, Ready mixed | Version | 2.1 Deutsch |
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| Certificate Number | 1964-CSC24-2025 | Date of certification | Dec 4, 2025 |
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| Certificate Type | Concrete, Ready mixed | Version | 3.0 Deutsch |
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| Certificate Number | 1009-CSC21-2023 | Date of certification | Oct 4, 2023 |
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| Certificate Type | Concrete, Precast | Version | 2.1 Vlaams (BE) |
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| Certificate Number | 1007-CSC21-2023 | Date of certification | Oct 4, 2023 |
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| Certificate Type | Concrete, Precast | Version | 2.1 Vlaams (BE) |
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| Certificate Number | 1005-CSC21-2023 | Date of certification | May 5, 2023 |
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| Certificate Type | Concrete, Precast | Version | 2.1 Vlaams (BE) |
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| Certificate Number | 1006-CSC21-2023 | Date of certification | Oct 4, 2023 |
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| Certificate Type | Concrete, Precast | Version | 2.1 Vlaams (BE) |
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| Certificate Number | 1008-CSC21-2023 | Date of certification | May 5, 2023 |
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| Certificate Type | Concrete, Precast | Version | 2.1 Vlaams (BE) |
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| Certificate Number | 1002-CSC21-2023 | Date of certification | Oct 4, 2023 |
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| Certificate Type | Concrete, Precast | Version | 2.1 Vlaams (BE) |
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| Certificate Number | 1003-CSC21-2023 | Date of certification | Oct 4, 2023 |
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| Certificate Type | Concrete, Precast | Version | 2.1 Vlaams (BE) |
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| Certificate Number | 1004-CSC21-2023 | Date of certification | May 5, 2023 |
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| Certificate Type | Concrete, Precast | Version | 2.1 English |
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| Certificate Number | 1333-CSC21-2023 | Date of certification | Jun 13, 2024 |
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| Certificate Type | Concrete, Ready mixed | Version | 2.1 Vlaams (BE) |
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