Everything negotiable & depending on spec situation

In general, everything is negotiable, depending on how badly the company wants you.

In your specific case, what's the grade level structure inside your company (every company has a different one)? What's your title in China? Who initiated the relocation?

Assuming the grade level structure is the same as in most US companies, 10600 is the minimum pay for a staff in Bay area, and 12% is the minimum too.

As for whether you should negotiate, only you know your specific situation --- no one else can say for sure.

If you really want to negotiate, focus on title, base salary and bonus. All the rest are mostly standard in a big company.

Good luck.