Government Procurement Act Article 5

An entity may entrust a juridical person or organization to conduct its procurement.The procurement referred to in the preceding paragraph shall be governed by this Act, and the juridical person or organization shall be supervised by the entrusting entity.
中文原文 政府採購法第5條
機關採購得委託法人或團體代辦。
前項採購適用本法之規定,該法人或團體並受委託機關之監督。

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