Oost-Groninger Betonmortel Centrale B.v. Winschoten — Winschoten, Netherlands
| Certificate Number | 428-CSC21-2023 | Date of certification | Dec 16, 2023 |
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| Certificate Type | Concrete, Ready mixed | Version | 2.1 Nederlands |
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| Certificate Number | 428-CSC21-2023 | Date of certification | Dec 16, 2023 |
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| Certificate Type | Concrete, Ready mixed | Version | 2.1 Nederlands |
| Client website — Certificate | |||
| Certificate Number | 1001-CSC21-2023 | Date of certification | May 15, 2023 |
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| Certificate Type | Aggregate | Version | 2.1 English |
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| Certificate Number | 596-CSC24-2024 | Date of certification | May 25, 2024 |
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| Certificate Type | Cement | Version | 3.0 Deutsch |
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| Certificate Number | 1582-CSC24-2024 | Date of certification | Oct 23, 2024 |
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| Certificate Type | Aggregate | Version | 3.0 Deutsch |
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| Certificate Number | 1754-CSC24-2025 | Date of certification | Apr 9, 2025 |
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| Certificate Type | Concrete, Ready mixed | Version | 3.0 Deutsch |
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| Certificate Number | 1755-CSC24-2025 | Date of certification | Apr 9, 2025 |
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| Certificate Type | Concrete, Ready mixed | Version | 3.0 Deutsch |
| Certificate | |||
| Certificate Number | 2017-CSC24-2025 | Date of certification | Dec 2, 2025 |
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| Certificate Type | Aggregate | Version | 3.0 Deutsch |
| Certificate | |||
| Certificate Number | 1919-CSC24-2025 | Date of certification | Oct 20, 2025 |
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| Certificate Type | Aggregate | Version | 3.0 Deutsch |
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| Certificate Number | 332-CSC21-2023 | Date of certification | Apr 15, 2023 |
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| Certificate Type | Concrete, Precast | Version | 2.1 Nederlands |
| Client website — Certificate | |||
| Certificate Number | 1837-CSC24-2025 | Date of certification | May 15, 2025 |
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| Certificate Type | Concrete, Precast | Version | 3.0 English |
| Certificate | |||
| Certificate Number | 616-CSC24-2024 | Date of certification | Jul 9, 2025 |
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| Certificate Type | Aggregate | Version | 3.0 Deutsch |
| Certificate | |||
| Certificate Number | 979-CSC21-2022 | Date of certification | Jun 28, 2024 |
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| Certificate Type | Concrete, Ready mixed | Version | 2.1 Deutsch |
| Certificate | |||
| Certificate Number | 977-CSC21-2022 | Date of certification | Jun 28, 2024 |
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| Certificate Type | Concrete, Ready mixed | Version | 2.1 Deutsch |
| Certificate | |||
| Certificate Number | 980-CSC21-2022 | Date of certification | Jun 28, 2024 |
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| Certificate Type | Concrete, Ready mixed | Version | 2.1 Deutsch |
| Certificate | |||
| Certificate Number | 615-CSC24-2024 | Date of certification | Jun 28, 2024 |
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| Certificate Type | Concrete, Ready mixed | Version | 2.1 Deutsch |
| Certificate — CO₂-Module | |||
| Certificate Number | 981-CSC21-2022 | Date of certification | Jun 28, 2024 |
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| Certificate Type | Concrete, Ready mixed | Version | 2.1 Deutsch |
| Certificate | |||
| Certificate Number | 978-CSC21-2022 | Date of certification | Jun 28, 2024 |
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| Certificate Type | Concrete, Ready mixed | Version | 2.1 Deutsch |
| Certificate | |||
| Certificate Number | 1776-CSC24-2025 | Date of certification | Jun 20, 2025 |
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| Certificate Type | Cement | Version | 3.0 Deutsch |
| Client website — Certificate | |||
| Certificate Number | 527-CSC21-2023 | Date of certification | Jan 15, 2024 |
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| Certificate Type | Cement | Version | 2.1 Deutsch |
| Client website — Certificate | |||
| Certificate Number | 486-CSC21-2023 | Date of certification | Nov 15, 2023 |
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| Certificate Type | Concrete, Precast | Version | 2.1 Nederlands |
| Client website — Certificate | |||
| Certificate Number | 719-CSC24-2024 | Date of certification | Nov 19, 2024 |
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| Certificate Type | Concrete, Precast | Version | 3.0 English |
| Certificate | |||
| Certificate Number | 126-CSC24-2024 | Date of certification | Oct 1, 2024 |
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| Certificate Type | Concrete, Precast | Version | 3.0 English |
| Client website — Certificate | |||
| Certificate Number | 855-CSC24-2025 | Date of certification | Nov 25, 2025 |
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| Certificate Type | Concrete, Precast | Version | 3.0 English |
| Client website — Certificate | |||
| Certificate Number | 1513-CSC24-2024 | Date of certification | Apr 16, 2025 |
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| Certificate Type | Concrete, Ready mixed | Version | 3.0 English |
| Certificate | |||
| Certificate Number | 1512-CSC24-2024 | Date of certification | Apr 16, 2025 |
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| Certificate Type | Concrete, Ready mixed | Version | 3.0 English |
| Certificate | |||