The model Casio Camera (Z200) was released in the year 2008 and is old by digital camera standards.
I assume you live in China as the price shown is very high when compared to other countries.
I looked at sample photos from a Casio Z200 camera.
The left side of the photos are very soft (almost out of focus).
I would not recommend the Casio Z200.
While Casio and Sony both produce very good cameras, one can not judge all of their cameras based on only one camera model.
You did not state what model Sony camera you are considering.
My father is a carpenter. He want to take photo to all his works and keep them in his mind when he becomes old. So he asked me brought a camera to him. When I went to a big exclusive store where sells cameras, an assistant came me and said buy Casio. It is highly cost effective. But I saw the sony because I had only know the brand is very great. But the assistant show me the pixel and other function of theses two camera. Then, I was conquered by Casio. But I have never know it clearly. Is it really good? I think time tries all. How do you think about Casio and Sony?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic