Cosmetics Good Manufacturing Practice Regulations Article 13

The flow of the materials, products, and personnel through the building or between the buildings shall be planned properly to avoid any mix-ups in the cosmetics manufacturing premises.
中文原文 化粧品優良製造準則第13條
化粧品製造場所,其原物料、產品及人員進出,於建築物內或建築物間之動線,應有良好之規劃,防止發生混雜。

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