Natural Gas Enterprise Act Article 31

Natural gas production or import enterprises shall maintain a stable gas supply and store the required supply volume for their gas users.Natural gas production or import enterprises shall maintain a certain number of days of storage tank capacity.The central competent authority shall prescribe the storage tank capacity stated in the preceding paragraph.
中文原文 天然氣事業法第31條
天然氣生產或進口事業應維持供氣穩定,並儲存其供氣用戶所需之供應量。
天然氣生產或進口事業應自備一定天數之儲槽容量。
前項儲槽容量,由中央主管機關定之。

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