May I point out to some typos that may confused readers?

ข้อควรระวัง:อย่ากล่าว เกี่ยวกับ “the mark” ของผลิตภัณฑ์ หนึ่งเช่น อย่ากล่าวว่า “What mark of coffee do you drink?”[I think you mean to say ‘make’ (not mark)]

“What brand are those jean?”[‘Jean’ usually mean ‘a kind of fabric’ but also used to mean ‘jeans’ (a kind of pants - made from jean fabric). In your example above ‘jean’ is also correct as ‘jean’ is also ‘plural’ but confusing because it follows ‘those’ (those jean –> plural singular..?).]

;-)