Toplus 'Kws Ua Haujlwm tau hais rau peb Cobalt tsos

Jul 30, 2019

Tso lus

Tus Kws Tshaj Lij Qhia Peb Cobalt yog ib qho silvery dawb hlau.cibalt tsis muaj kev cuam tshuam nrog saum chav kub 300 tawm rhuab hauv cov pa oxidation tsim?


Tuplus cov neeg ua haujlwm ua haujlwm txuas ntxiv yuav txuas ntxiv qhia koj txog kev paub ntawm kev cob qhia.

Xa kev nug
Tiv Tauj PebYog muaj lus nug

Koj tuaj yeem tiv tauj peb hauv xov tooj, email lossis online daim ntawv hauv qab no. Peb tus kws tshaj lij yuav hu koj rov qab sai.

Hu rau tam sim no!