I'd seriously recommend contacting DHGate before you assume that their dropshipping is covered by their escrow plan. If you read the escrow page, you'll note it is impossible for the terms of clearance to be met in a dropshipping situation. I looked around a little and checked their forum to see if I could find a clarification on the matter, to no avail.
Again, for the reasons I tried to make clear above, I believe you're going to find escrow on dropshipping to be virtually impossible to get. And even if you can get it on DHGate, the number of items that can be individually dropshipped (vs. case packs) without being eaten alive by shipping charges are pretty small. You're letting your enterprise be boxed into a corner over fear of being ripped off, when smart business practices will generally protect you from that problem without having to compromise what it is you're trying to achieve for your business.