Natural Gas Enterprise Act Article 42

A natural gas utility enterprise investing in other businesses shall not affect its normal gas supply operations. Before proceeding with these investments, those who intend to invest in other businesses shall submit their investment projects and the amount to the competent authority of the municipality or county (city), which shall subsequently forward them to the central competent authority for approval.
中文原文 天然氣事業法第42條
公用天然氣事業轉投資其他事業,不得影響其供氣業務之正常營運;進行轉投資其他事業者,應將投資項目及金額,報經直轄市、縣(市)主管機關轉請中央主管機關核准後,始得為之。

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