– Th? Hello?n s? chuyên nghi?p c?a nhà s?n xu?t trong khâu ti?p th? s?n ph?m.The impression can be manipulated by modifying the voltage of the gun to speed up or decrease the pace of electrons and modifying the electromagnetic wavelength by using the solenoids.– T?o s? c?nh tranh cho doanh nghi?p v?i nh?ng th??ng hi?u khác trên th? tr??ng.