hi german passport,i have two 60 day tourists i am now 8 days into my first,if i go china next week for 5 days would i lose my first entry visa when i return to thailand and then they start my secound visa,or can i get a re-entry visa before i go china and not lose the remander of days from my first 60 day,any info welcome thank you.

You can obtain a re-entry permit for 1,000 baht and use that for return entry (be sure to enter on the arrival card).