At Ningbo Changshi, we prioritize quality and reliability. Our products are manufactured to meet or exceed relevant international standards to ensure they are suitable for a global market. We adhere to standards such as:

• IEC (International Electrotechnical Commission): Particularly standards like IEC 61284 for "Overhead lines – Requirements and tests for fittings."

• ANSI (American National Standards Institute): For products supplied to the North American market.

• EN (European Norms): For products used in Europe.

Our commitment to these standards ensures that our fittings are rigorously tested for mechanical strength, electrical performance, and resistance to environmental factors, guaranteeing a long service life.