ya, I have 2 of those things. They're great for only $20-ish!
yellow=composite
red=right
white=left
not sure, but I'm guessing the orange wires are ground?
Try this to see what's what:
open the power connector and touch one multimeter lead to the ground wire. Then touch the other lead to each wire in question in sequence at the point where it's conencted to the screen conenctor. (maybe remove the white connector?)
The wire that gives the meter a signal is the power ground. Repeat for the other wires.
Please post anything you figure out.

(cuz Intec screens are a hella lot more common in the US than Hip Gear screens.)