My son is a chinese national. His passport is expiring. How can he get it renewed.

Hi Mike, you son needs visit the consulate in person for passport renewal. Documents needed are as follows:
1. Application form for Chinese passport renewal. This is available at the website of consulate;
2. 4 passport photos, the size should be 48mmx33mm;
3. His original Chinese passport and copies of inner pages.
4. US residence permit and copy.