@steveyeong said:

But my problem is the downloading . It hang when my model got bigger, and even the smallest file downloading will hang my system .

What is the size of the file your are experiencing performance issues?

That rectangle you see is because the trasparent material applied arround the label is a different color than the transparency of the label. Make them the same and you shouldn't see the edges.

Ok will DL and try it!
with thanks

aqua.jpg

On the left is your model as you sent it. On the right is what happens after exploding the image so it is a material painted on the face. This is the same thing Box is talking about. It looks like you are being inconsistent about how you are bringing in the images you are using. Or trying to use.

BTW, this was just a quick render in Kerkythea.