Rihan Solutech is engaged in the following businesses. 1. Electrical quality measurement, diagnosis, countermeasures and power conductor noise field 2. Earth leakage measurement and diagnosis in single-phase and 3-phase power supply and trip diagnosis of various circuit breakers and earth leakage breaker 3. Battery performance monitoring, capacity test, and discharge diagnosis field 4. In the field of machinery, we are a company with know-how to measure and diagnose the tension of metal bolts (BOLT).