What is the version of the following sentence with correct punctuation?

If some of the small or medium sized companies in your cluster are contemplating entering the Chinese market or if they only want to look at the possibilities in China let them know about the offer from the EU centre
If some of the small or medium sized companies in your cluster are contemplating entering the Chinese market, or if they only want to look at the possibilities in China, let them know about the offer from the EU centre.