Simplicity Holding Limited, an investment holding company, operates casual dining full-service restaurants in Hong Kong. The company operates through Chinese Cuisine; Thai Cuisine; Malaysian Cuisine; Food Ingredients and Beverages Operations; and Aircraft’s Engine Stand Repairing and Maintenance Services and Other Related Services segments. It operates restaurants under the Marsino, Baba Nyonya, and Grand Avenue brands. The company also provides aircraft engine stand repairing and maintenance services, warehouse storage services, and logistics services for aircraft engines.