You are visiting an old profile of john-hao. While john-hao's profile data has been deleted, we are thankful for the contribution john-hao made to CrazyEngineers.

CrazyEngineers has achieved exceptional success because of tens of thousands of engineers like john-hao for over -18.41635182579 years

Feel free to visit our homepage at CrazyEngineers - World's Largest Community of Engineers and consider becoming a member.