You can request for pictures without signatures from the sellers. Try sending them a message through the DHGate website. :)
Let me remind you that DH Gate is a good site for sourcing non-branded goods, since you can buy them a lot cheaper in China than from anywhere else. DO NOT buy brand-name products from Chinese suppliers because it is very difficult to establish the authenticity of their items and you will learn that most of the problems from those who have used DHGate suppliers concern branded goods. And in finding the right suppliers from DHGate you need to do extensive background research.
Here's a past forum post where you can learn more about DHGate -
Link hidden: Login to view
We wish you the best! :)