Retailer Muji has been fined 200,000 yuan ($31,300) in Shanghai for using packaging that lists Taiwan as a country, underscoring China's growing sensitivity to how companies refer to the self-ruled island.

This marks the second time Muji has been hit by such criticism from China this year, and comes after a number of foreign firms including Delta Air Lines Inc. and Marriott International Inc. have apologized for similar actions.

Muji, which is owned by Ryohin Keikaku Co., imported 119 clothes hangers from Japan last year in packaging that marked Taiwan as the "country of origin," the Shanghai Administration for Industry and Commerce said in a statement.