Those clone engines are hit and miss. My Dad has a clone 8HP "Dane" engine. It seems allright but you can tell a lot of parts on it are just cheap. Yup- In China they have very lax laws and their government will side with their manufactures. The worst case I've read about was a car company in China that knocked off a Toyota Rav4, and even put a Toyota badge on it. Toyota sued them. The Chinese court said they "Didn't recognize" the brand name "Toyota". GM sued a Chinese company that knocked off the Chevy Spark which is a small car they sell in Asia. Even the doors of the Chinese version fit GM's car. They too lost.