In nhãn s?n ph?m có r?t nhi?u ph??ng pháp ???c s? d?ng th?c t? trong ?ó in offset và in k? thu?t s? là ?ng d?ng ph? bi?n h?n. Sample preparing is an extremely crucial move in TEM and the tactic involved with planning the sample differs, according to the nature of the fabric and the information expected from it.A vacuum process is utilised