-
1. Cov Nqe Kaw Yav Dhau Los Hauv Cov Lag Luam Tseem Ceeb Nyob rau hnub ua lag luam kawg, cov nqi butyl acetate tseem ruaj khov hauv feem ntau thaj chaw, nrog rau kev poob qis me ntsis hauv qee thaj chaw. Kev thov hauv qab tsis muaj zog, ua rau qee lub Hoobkas txo lawv cov nqi muab. Txawm li cas los xij, vim yog cov nqi tsim khoom siab tam sim no, feem ntau ...Nyeem ntxiv»
-
Ua ib lub tuam txhab muab tshuaj lom neeg loj tshaj plaws hauv xeev Shandong, Suav teb, peb tau nyob rau pem hauv ntej ntawm kev muab cov khoom siv tshuaj lom neeg zoo txij li xyoo 2000. Peb qhov kev tshwj xeeb hauv kev muab cov khoom siv tshuaj lom neeg thiab cov khoom siv nruab nrab tseem ceeb tau tso cai rau peb los pab rau ntau yam lag luam. Ntawm ...Nyeem ntxiv»