In ?n Style IN24H d?ch v? thi?t k? in ?n giá r? ch?t l??ng hàng ??u, mang ??n cho khách hàng nh?ng ?n ph?m t?t nh?t, ch?t l??ng nh?tA differential pumping aperture is accustomed to individual the gun chamber, pumped from the ion pump, from the rest of the column in order to guard the electron gun from degrading.Các công ty, doanh nghi?p c?n t