Reliability usually means consistent compliance to recognized standards, strong batch testing, and traceable quality management. Key criteria include documented conformance to IEC or ASTM specifications, certified quality systems, stable supply chain, low variability in moisture and dielectric loss, clear certificates of analysis, and robust SDS and regulatory documentation. Utilities also look for proven field performance, technical support, and the ability to supply large volumes with controlled logistics. For sensitive sites, they may require enhanced environmental credentials, fire safety data, and third party testing evidence for corrosive sulfur and gassing behavior.
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