Approvals C-Tec Ltd is ISO 9001:2015 accredited. RoHS Compliant Processes Specification C-Tec Ltd is ISO 9001:2015 accredited. BS EN ISO 7599:2018 BS EN ISO 2081:2018 BS EN ISO 10074:2021 AMS 03-25 AMS 03-18 AMS 03-20 AMS 03-2A MIL-DTL-5541 F MIL-A-8625 F ASTM A967-13