- Công ty x? s? s? ph?i tr? th??ng cho ng??i trúng th??ng m?t l?n b?ng ti?n Vi?t B?c ??ng thông qua hình th?c chuy?n kho?n ho?c tr? ti?n m?t.Harmonics are periodic distortions of voltage, latest, or ability sine waves. Harmonics in electrical power distribution systems are often brought on by non-linear loads including switched manner dc elec