Market Research Group

Does anyone have experience working with specialized Chinese manufacturers for power system protection or energy measurement? I am currently looking for stable suppliers of miniature transformers and sensors that meet international certifications. Any feedback on build quality and long-term stability would be appreciated.

Has anyone here had experience with long-term reliability when sourcing miniature current transformers for protection relays? I am looking for a supplier that maintains strict ISO standards and provides detailed technical data for transient state analysis.