Some Apple suppliers have once again come under scrutiny for poor environmental performance.

Taiwan media gave prominent play on Wednesday to an investigative report aired on Sunday in which CCTV reporters visited a few suppliers that Chinese environmental groups in August had said were thought to be doing business with Apple and had lax environmental standards.

In the 40-minute report, CCTV named Japan’s Meiko Electronics and Taiwanese notebook casing supplier Catcher Technology as being polluters.

“China, as the world’s factory, is experiencing pains of restructuring. The emerging environmental problems for the country’s large-scale manufacturers are closely related to China’s status in the global economic structure,” CCTV said in its report.