Zhè shì zhēnpǐn, shàngmiàn yǒu chǎngjiā de chuōjì.
This is genuine — it bears the manufacturer's stamp.
Tips
usage
戳 alone can mean 'a stamp/seal' as well as 'to poke/jab'. 戳记 is the formal noun for the impression left by a rubber stamp or official seal — closely related to 印章 (yìnzhāng, official seal) and 邮戳 (yóuchuō, postmark).