The Regulations Governing Labor by Prisoners Article 9

With attention attached to the quality and the sales of the products, the production of products shall comply with relevant laws and regulations.The prison may individually or jointly set up sales space for finished products.
中文原文 受刑人作業實施辦法第9條
作業成品之產製應符合相關法規規定,並注意其品質及銷路。
監獄得單獨或聯合設置作業成品銷售處所。

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