A Hong Kong-based nongovernmental organization that discovered poor working environments at two Chinese factories who supply goods to Uniqlo said Friday it plans to continue investigating more Chinese factories that partner with the casual clothing giant.

The Students and Scholars Against Corporate Misbehavior (Sacom) shared its findings, including low wages, excessive overtime work and unsafe labor conditions, earlier this week.

Responding to the Sacom's report, Fast Retailing Co., which runs Uniqlo, announced on Thursday steps it plans to take to improve working conditions at the plants, admitting some of the points in the report were true.