Suppliers must certify compliance with this specification and provide required documentation (including required test data, Full Material Disclosure (FMD), ...

https://www.apple.com/jp/environment/pdf/Apple_Regulated_Substances_Specification_Sept2018.pdf

Pro Display XDR Technology Overview February 2020 
 Pro Display XDR Technology Overview February 2020 Contents Introduction 3 ................................

https://www.apple.com/jp/pro-display-xdr/pdf/Pro_Display_White_Paper_Feb_2020.pdf