Spenner GmbH & Co. KG, Mahlwerk Duisburg — Duisburg, Germany
| Certificate Number | 965-CSC24-2025 | Date of certification | Dec 12, 2025 |
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| Certificate Type | Cement | Version | 3.0 Deutsch |
| Certificate | |||
| Certificate Number | 965-CSC24-2025 | Date of certification | Dec 12, 2025 |
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| Certificate Type | Cement | Version | 3.0 Deutsch |
| Certificate | |||
| Certificate Number | 622-CSC24-2024 | Date of certification | Mar 15, 2024 |
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| Certificate Type | Aggregate | Version | 3.0 English |
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| Certificate Number | 635-CSC24-2024 | Date of certification | May 15, 2024 |
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| Certificate Type | Concrete, Precast | Version | 3.0 English |
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| Certificate Number | 1189-CSC21-2023 | Date of certification | Dec 12, 2023 |
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| Certificate Type | Concrete, Ready mixed | Version | 2.1 Deutsch |
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| Certificate Number | 1194-CSC21-2023 | Date of certification | Dec 12, 2023 |
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| Certificate Type | Concrete, Ready mixed | Version | 2.1 Deutsch |
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| Certificate Number | 1193-CSC21-2023 | Date of certification | Dec 12, 2023 |
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| Certificate Type | Concrete, Ready mixed | Version | 2.1 Deutsch |
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| Certificate Number | 1228-CSC21-2023 | Date of certification | Dec 12, 2023 |
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| Certificate Type | Concrete, Precast | Version | 2.1 Deutsch |
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| Certificate Number | 1187-CSC21-2023 | Date of certification | Dec 12, 2023 |
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| Certificate Type | Concrete, Ready mixed | Version | 2.1 Deutsch |
| Client website — Certificate | |||
| Certificate Number | 1188-CSC21-2023 | Date of certification | Dec 12, 2023 |
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| Certificate Type | Concrete, Ready mixed | Version | 2.1 Deutsch |
| Client website — Certificate | |||
| Certificate Number | 717-CSC24-2025 | Date of certification | Apr 26, 2025 |
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| Certificate Type | Cement | Version | 3.0 Deutsch |
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| Certificate Number | 847-CSC24-2025 | Date of certification | May 2, 2025 |
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| Certificate Type | Concrete, Ready mixed | Version | 3.0 Deutsch |
| Client website — Certificate — CO₂-Module | |||
| Certificate Number | 848-CSC24-2025 | Date of certification | May 2, 2025 |
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| Certificate Type | Concrete, Ready mixed | Version | 3.0 Deutsch |
| Client website — Certificate — CO₂-Module | |||
| Certificate Number | 849-CSC24-2025 | Date of certification | May 2, 2025 |
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| Certificate Type | Concrete, Ready mixed | Version | 3.0 Deutsch |
| Client website — Certificate — CO₂-Module | |||
| Certificate Number | 904-CSC24-2025 | Date of certification | Jul 4, 2025 |
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| Certificate Type | Concrete, Ready mixed | Version | 3.0 Deutsch |
| Client website — Certificate — R-Module — CO₂-Module | |||
| Certificate Number | 905-CSC24-2025 | Date of certification | Jul 4, 2025 |
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| Certificate Type | Concrete, Ready mixed | Version | 3.0 Deutsch |
| Client website — Certificate — CO₂-Module | |||
| Certificate Number | 1569-CSC24-2024 | Date of certification | Oct 31, 2024 |
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| Certificate Type | Concrete, Ready mixed | Version | 3.0 Deutsch |
| Client website — Certificate — CO₂-Module | |||
| Certificate Number | 266-CSC21-2022 | Date of certification | Feb 9, 2023 |
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| Certificate Type | Aggregate | Version | 2.1 English |
| Certificate | |||
| Certificate Number | 1315-CSC21-2023 | Date of certification | May 31, 2024 |
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| Certificate Type | Concrete, Ready mixed | Version | 2.1 Deutsch |
| Client website — Certificate | |||
| Certificate Number | 1316-CSC21-2023 | Date of certification | May 31, 2024 |
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| Certificate Type | Concrete, Ready mixed | Version | 2.1 Deutsch |
| Client website — Certificate | |||
| Certificate Number | 1317-CSC21-2023 | Date of certification | May 31, 2024 |
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| Certificate Type | Concrete, Ready mixed | Version | 2.1 Deutsch |
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| Certificate Number | 1318-CSC21-2023 | Date of certification | May 31, 2024 |
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| Certificate Type | Concrete, Ready mixed | Version | 2.1 Deutsch |
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| Certificate Number | 1319-CSC21-2023 | Date of certification | May 31, 2024 |
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| Certificate Type | Concrete, Ready mixed | Version | 2.1 Deutsch |
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| Certificate Number | 1813-CSC24-2025 | Date of certification | Oct 17, 2025 |
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| Certificate Type | Concrete, Ready mixed | Version | 3.0 Deutsch |
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| Certificate Number | 1810-CSC24-2025 | Date of certification | Oct 17, 2025 |
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| Certificate Type | Concrete, Ready mixed | Version | 3.0 Deutsch |
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| Certificate Number | 1812-CSC24-2025 | Date of certification | Oct 17, 2025 |
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| Certificate Type | Concrete, Ready mixed | Version | 3.0 Deutsch |
| Client website — Certificate | |||