Sony has identified substances contained in the parts or materials of Sony products that have been judged to have a significant impact on the global environment and may harm human health as "Controlled Substances", Sony established its "Management Regulations for Environment-related Substances to Be Controlled which Are Included in Parts and Materials" and clarifies which chemical substances cannot be used or whose use it is working to reduce. Sony introduced its "Green Partner Environmental Quality Approval System" as an operation system for ensuring that suppliers comply with these standards and regulations, and Sony only procures from suppliers who are certified as Green Partners.
https://www.sony.net/SonyInfo/procurementinfo/green.html
Ruco Qulaifies all the requirements to meet The SONY Green Partnership.