70gsm vs 80gsm vs 100gsm:使用哪種 A4 紙?
TL;DR: 70gsm suits draft and high-volume internal prints where cost per ream matters most. 80gsm is the everyday office default with better opacity for duplex pages. 100gsm adds a Premium feel and cleaner duplex for color-heavy or client-facing work. If you’re unsure, get a sample of all three and test on your own printer. 70gsm […]
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