Ua Haujlwm Kev Nyab Xeeb Paj Rwb Xwm Cov hnab looj tes knitted nrog tsis-npleem cov dots

Cov hnab looj tes ua hauj lwm paj rwb uas tsis nyob hauv qab me me

Siv: Tsim nyog rau lub tshuab ua tsev, shrobury, metallurgy, hav zoov, kev tsim kho, kev tsim kho thiab thauj hluav taws xob ua haujlwm.

Nta: Hnav lub teeb yuag, ua pa ua pa, xis nyob, nrog cov nyhuv tiv taus

Nco tseg: 1 Cov khoom no tsis muaj qhov kub thiab txias, cov khoom rwb thaiv tsev. Yuav tsum tsis txhob siv rau cov chaw ua haujlwm kub siab, thiab twv yuav raug hu tsis yog hnab looj tes istulated.
2 Siv cov khoom lag luam ib zaug raug txiav, nws yuav cuam tshuam rau cov txiaj ntsig kev tiv thaiv tsis siv.
3 Cov khoom no yuav tsum tau muab cia rau hauv qhuav thiab muaj qhov cua kom tiv thaiv noo noo, mildew.
4 siv. Kev xaiv sib chwv nrog cov tshuaj corrosive