1. Kev nyab xeeb thiab them ceev ceev yam tsis muaj kev puas tsuaj rau lub roj teeb
2. Ntau tshaj 80% them tag nrho hauv 40 feeb
3. Ntau yam kev tiv thaiv kev nyab xeeb, overvoltage, undervoltage, overcurrent, luv Circuit Court, overtemperature, thiab lwm yam.
4. Txhawb QC3.0, QC2.0