Ch?n ch?t li?u tem nhãn: Ch?t li?u tem nhãn c?n ???c l?a ch?n phù h?p v?i lo?i s?n ph?m và m?c ?ích s? d?ng.At the best of the column could be the electron gun which partners to the high voltage supply accustomed to established the kinetic energy on the electron beam. Regular accelerating voltages range from 80 kV up to three hundred kV. The… Read More