According to a factory I discussed painting options with in Dongguan (near Shenzhen) recently, local environmental pollution regulations have made traditional approaches to anodized steel powder coating (my inquiry) effectively illegal. The processes are still 'available' through amorphous parties (no discussion of distance or environmental regulation legality). However, that's coming from a factory so take it with a grain of salt. My takeaway, if any, would be this is part of a broader shift toward stronger environmental protection efforts led by forward-thinking regional governments, not Beijing.