hey guys, I’m searching about professional 3D printer, could you suggest one for me?
Target is the key. Please update your question with details about what do you need to print. Sizes, resolution, materials … Every body could suggest you some printer but without these information, suggestion will we blind shooting 
I have no idea about those things, we need good to stay long life with a lot of functions . @Ondrej_Pistek
here’s a list of all 3D printers currently on the market…there’s hundreds of them at many price ranges, sizes, quality, etc. http://www.3ders.org/pricecompare/3dprinters/
Matsuura Lumex Avance 25 for just 846000 $.
Seems to be a good deal 
Lots of functions. 
Perhaps you know your budget, even that could be a good starting point to determine what you want.
I agree with @Ondrej_Pistek . You have to know what parts, quality, size, and material you are looking for. Every 3D printer out there is good for something, but none of them are good for everything