- Certificate ISO 9001 valid 2015 - 2018 (in german)
- Certificate ISO 50001:2011 valid 2013 - 2016 (in german)
- Certificate DB –German Railway for track sand valid until 2016 (in german)
- Certificate of compliance Haida EI (in german)
- Certificate of compliance Haida EIII-S (in german)
- Certificate 12620 bup Zert Haida (in german)
- Building materials brochure - silica sand and gravel
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