4-Pentyn-2-ol
Taw qhia lub Revolutionary XYZ Lub Tshuab Nqus Tsev
Koj puas nkees ntawm kev siv sij hawm tu koj lub tsev nrog subpar nqus tsev vacuum? Tsis txhob saib ntxiv, vim peb muaj kev daws teeb meem rau koj! Qhia tawm lub kiv puag ncig XYZ Lub tshuab nqus tsev vacuum
Sau koj cov lus ntawm no thiab xa tuaj rau peb