Act on Transactions in Markets of Agricultural Products Article 20

Suppliers or purchasers in an agricultural wholesale market are prohibited from engaging in both purchase and supply businesses within the same market.
中文原文 農產品市場交易法第20條
農產品批發市場之供應人或承銷人,在同一市場不得兼營承銷及供應業務。

English translation for reference only; the Chinese text prevails. Not legal advice.