As you've shared this is a permanent position, it may very well be a "local" package (ie. paid in RMB, like a local) or at best a "local plus" (ie. paid in RMB like a local PLUS a housing allowance). Doesn't sound like an expat package - which could include more.

As such, whether you get tax equalization etc would depend very much on your negotiation with the company, what the company is used to paying for similar positions etc. Are expats a norm or rarity in the company etc. as this would set precedence for other roles in the company.