牌 (pái) means "brand," "sign," or "card," depending on the context. When referring to a commercial brand, it often appears in compounds like 名牌 (famous brand) or after a brand descriptor. It is a versatile character used in everyday conversation and business contexts.
这个牌子的手机质量很好,我一直在用。
Zhè ge páizi de shǒujī zhìliàng hěn hǎo, wǒ yìzhí zài yòng.
This brand of phone is very good quality; I've been using it all along.
年轻人都喜欢买名牌衣服。
Niánqīngrén dōu xǐhuan mǎi míngpái yīfu.
Young people all like to buy brand-name clothes.
你看看这个牌子的洗发水,评价不错。
Nǐ kànkan zhège páizi de xǐfàshuǐ, píngjià búcuò.
Take a look at this brand of shampoo, the reviews are pretty good.