Here are certain types of design standards of PCB Design for your reference:
TS—S0902010001 (Information technology equipment design specification of PCB safety regulations)
TS—SOE0199001 (Electronic device design standard of forced air cooling and heating)
TS—SOE0199002 (Electronic device design standard of natural air cooling and heating )
IEC60194 (Printed Circuit Board design manufacture and assembly-terms and definitions)