I wonder if i can import and sell a product which is patented in another country (China) but sell it in my own land (Netherlands). There are no registrations from it in european lands. I have searched in Google patents, WIPO, uspto.gov . And i can see there are lots of chinese manufacturers selling it and exporting it to other countries.
This is definitely an area where you are going to need to seek professional legal counsel. There are many issues here which will need careful navigation.
Depending on the invention there may be pending patents which could undermine your business case. Imagine investing large sums of money into a product only to discover that a patent was newly issued in your country.
Furthermore, as China (or other countries) become hubs for manufacturing activity you find out that the primary supplier of this already patented product is purchased by a Chinese company which relocates all operation to their home country, leaving you unable to obtain the product from an alternate supplier.
Bottom line. You probably need to find your own counsel if you are seriously considering it. Relying on the work of others, without even knowing the decisions that went into that work, is probably not a wise choice.
You definitely need to take legal advice on this issue.
There was a Chinese trade mark case that showed that manufacture in China - but only for export from China- was not trade mark infringement in China. Thus the manufacture could continue.
You need to find out if there is a similar patent case that can help you in the same way.