16th of April, 2015, Mr. Yuan Lin, from CAA. Come to Jingyuetan park, certificating the Changchun Jingyuetan forest marathon track.
After a whole day hard work, track certificating finish.
Mr.Yuan had send the report to CAA. Recently the track certification is already send to us.
The whole certificate progress use the nation proved counter– Jones measuring instrument.It is fixd on bike gear. Mr. Yuan riding the bike. In order to ensure measuring. We must calculate the tyre ar perssure, weight and riding pace.