óa-chiau-pâi倚招牌

to have one's product sold under another's trade

to have one's product sold under another's trade name with the permission of the trademark owner

English Wiktionary, “倚招牌” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E5%80%9A%E6%8B%9B%E7%89%8C · confidence: Medium (Wiktionary)