Re: International codes
It has been a while, (11 years) but it's been my experience that China is rather eclectic with regard to standards. I've seen them use NEC, IEC, JIS (Japanese Industrial Standard) and seat of the pants. What we did about 13 years ago was contact the Chinese consulate and asked them. They were very pleased to help.
They tended toward IEC and JIS, but a major US manufacturer had NEMA XP foundries there. Ultimately, we used the NEC where we could adapt it to international equipment. That, and a job I did in Africa a few years earlier, was where I developed my generally antagonistic views of mixing the two area classification systems.