Partial Amendments to the Enforcement Rules of the Fair Trade Act Article 4
Production, sales, inventory, and import/export value（volume）data for the enterprise and the relevant market shall be taken into account when calculating the market share of an enterprise.Data necessary for the calculation of the market share may be based on that obtained upon investigation by the competent authority or that recorded by other government agencies.
中文原文 公平交易法施行細則第4條
計算事業之市場占有率時，應先審酌該事業及該相關市場之生產、銷售、存貨、輸入及輸出值（量）之資料。
計算市場占有率所需之資料，得以主管機關調查所得資料或其他政府機關記載資料為基準。
計算市場占有率所需之資料，得以主管機關調查所得資料或其他政府機關記載資料為基準。