Heinz Mitteldorf Sand- und Kieswerke GmbH & Co. KG — Kelsterbach, Germany
| Certificate Number | 974-CSC21-2022 | Date of certification | Feb 20, 2023 | 
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| Certificate Type | Aggregate | Version | 2.1 Deutsch | 
| Certificate | |||
| Certificate Number | 974-CSC21-2022 | Date of certification | Feb 20, 2023 | 
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| Certificate Type | Aggregate | Version | 2.1 Deutsch | 
| Certificate | |||
| Certificate Number | 975-CSC21-2022 | Date of certification | Feb 20, 2023 | 
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| Certificate Type | Aggregate | Version | 2.1 Deutsch | 
| Certificate | |||
| Certificate Number | 618-CSC24-2024 | Date of certification | Jul 9, 2025 | 
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| Certificate Type | Aggregate | Version | 3.0 Deutsch | 
| 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 | 354-CSC21-2022 | Date of certification | Jan 1, 2023 | 
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| Certificate Type | Aggregate | Version | 2.1 English | 
| Certificate | |||
| Certificate Number | 351-CSC21-2022 | Date of certification | Jan 1, 2023 | 
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| Certificate Type | Aggregate | Version | 2.1 English | 
| Certificate | |||
| Certificate Number | 353-CSC21-2022 | Date of certification | Jan 1, 2023 | 
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| Certificate Type | Aggregate | Version | 2.1 English | 
| Certificate | |||
| Certificate Number | 352-CSC21-2022 | Date of certification | Jan 1, 2023 | 
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| Certificate Type | Aggregate | Version | 2.1 English | 
| Certificate | |||
| Certificate Number | 989-CSC21-2023 | Date of certification | Apr 10, 2024 | 
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| Certificate Type | Aggregate | Version | 2.1 Deutsch | 
| Client website — Certificate | |||
| Certificate Number | 1115-CSC21-2023 | Date of certification | Aug 15, 2023 | 
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| Certificate Type | Aggregate | Version | 2.1 Deutsch | 
| Client website — Certificate | |||
| Certificate Number | 1116-CSC21-2023 | Date of certification | Aug 15, 2023 | 
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| Certificate Type | Aggregate | Version | 2.1 Deutsch | 
| Client website — Certificate | |||
| Certificate Number | 1117-CSC21-2023 | Date of certification | Aug 15, 2023 | 
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| Certificate Type | Aggregate | Version | 2.1 Deutsch | 
| Client website — Certificate | |||
| Certificate Number | 1133-CSC21-2023 | Date of certification | Sep 7, 2023 | 
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| Certificate Type | Aggregate | Version | 2.1 Deutsch | 
| Certificate | |||
| Certificate Number | 1010-CSC21-2023 | Date of certification | Mar 27, 2023 | 
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| Certificate Type | Aggregate | Version | 2.1 Deutsch | 
| Client website — Certificate | |||
| Certificate Number | 330-CSC21-2023 | Date of certification | Mar 17, 2023 | 
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| Certificate Type | Aggregate | Version | 2.1 Deutsch | 
| Client website — Certificate | |||
| Certificate Number | 1125-CSC21-2023 | Date of certification | Sep 14, 2023 | 
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| Certificate Type | Aggregate | Version | 2.1 Deutsch | 
| Client website — Certificate | |||
| Certificate Number | 1378-CSC21-2024 | Date of certification | Jan 31, 2024 | 
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| Certificate Type | Aggregate | Version | 2.1 Deutsch | 
| Client website — Certificate | |||
| Certificate Number | 1421-CSC24-2024 | Date of certification | May 15, 2024 | 
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| Certificate Type | Aggregate | Version | 3.0 Deutsch | 
| Client website — Certificate | |||
| Certificate Number | 1167-CSC21-2023 | Date of certification | Jun 3, 2024 | 
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| Certificate Type | Aggregate | Version | 2.1 Deutsch | 
| Client website — Certificate | |||
| Certificate Number | 1310-CSC21-2023 | Date of certification | Apr 26, 2024 | 
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| Certificate Type | Aggregate | Version | 2.1 Deutsch | 
| Client website — Certificate | |||
| Certificate Number | 1309-CSC21-2023 | Date of certification | May 8, 2024 | 
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| Certificate Type | Aggregate | Version | 2.1 Deutsch | 
| Client website — Certificate | |||
| Certificate Number | 1303-CSC21-2023 | Date of certification | May 8, 2024 | 
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| Certificate Type | Aggregate | Version | 2.1 Deutsch | 
| Client website — Certificate | |||
| Certificate Number | 1308-CSC21-2023 | Date of certification | May 10, 2024 | 
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| Certificate Type | Aggregate | Version | 2.1 Deutsch | 
| Client website — Certificate | |||
| Certificate Number | 1307-CSC21-2023 | Date of certification | Apr 26, 2024 | 
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| Certificate Type | Aggregate | Version | 2.1 Deutsch | 
| Client website — Certificate | |||
| Certificate Number | 1306-CSC21-2023 | Date of certification | May 10, 2024 | 
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| Certificate Type | Aggregate | Version | 2.1 Deutsch | 
| Client website — Certificate | |||