User talk:Wei.yuj

December 2018
Hello, I'm Deli nk. An edit that you recently made to Building insulation seemed to be a test and has been removed. If you want more practice editing, please use the sandbox. If you think a mistake was made, or if you have any questions, you can leave me a message on my talk page. Thanks! Deli nk (talk) 18:10, 6 December 2018 (UTC)