On Jan. 7,2019, news from the National Electrical Product Quality Supervision and Inspection Center, VT18-40.5 (S)/T1250-31.5 double-break vacuum circuit breaker, XGN49-40.5 (Z) (S)/T1250-31.5 gas-insulated metal-enclosed switchgear and YBT13-40.5 (FD)/0.69-3400 large-capacity prefabricated substation (Chinese type substation) that the three products, independently developed by Tianan successfully passed various types of tests at the center. The acquisition of type test report provides qualification guarantee for supporting 3MW wind turbine generator.