Chinese business M type issue

Hi
I have been on tourist L in China for almost 3 months. I had 30 days Tourist (L), extended it for 20 days- here they made some weird mistake. Then went to Hong Kong to get business M but they told me I can get ONLY 30 days tourist L.
Is it possible to get business visa for 6-12 months in Malaysia, Korea or any other near country? Or maybe apply for 90 days tourist L...
I am from Poland.
Thanks