Hi guys! I been searching and i discover that the Pitsterpro/puzy are made by a company call Shuopu Science and there web site is shounpuscience.com but what its interesting is that Puzy have the Galaxy model (Air cooled ) 230cc and Pitsterpro dont.Also puzy its registred in the internet by the guys of pitstrepro.What i dont know is why they dont have the Galaxy models available in the USA? To me they are outstanding products considering what 10 years ago was supply by the Japanese in the d/p and trail & off road models in the USA at that time.I wish they will come with more models and displacements in the future.Well done Pitsterpro!