I work for 5CGroup, a consulting company based in Hangzhou. We are specilialized in wind and solar power fields with many years of experience.
To answer to your question, there is no import tax for you if you buy solar equipment in China.
We work directly with wind and solar chinese suppliers. If you are still looking for some sellers we can help you to get in contact with them.
Please don't hestitate to get back to me if you have any other question.