Giúp s?n ph?m n?i b?t: V?i các ???ng nét in ?n s?c s?o, màu s?c t??i sáng b?t m?t s? giúp s?n ph?m n?i b?n b?t so v?i ??i th?. T? ?ó giúp b?n d? dàng chi?m tr?n ?u th? c?nh tranh. Magnetic lenses are used to concentration the beam of electrons from the specimen. From the guidance provided by the column tube of your condenser lens in to the