To ensure safety and quality, verify that the supplier holds ISO 9001:2015 certification for quality management. For electrical components, CE marking is mandatory for the European market, while UL or CSA certification is preferred for North America. If the system is used in hazardous environments (e.g., mining or oil & gas), ensure the components are ATEX or IECEx certified for explosion-proof safety. Additionally, check for IP65 or IP67 ingress protection ratings to guarantee the system can withstand dust and high-pressure water jets.