YUAV UA LI CAS RAU PEB:
Cov xwm txheej:
1) Lub tuam txhab ua haujlwm yuav tsum ua haujlwm zoo rau ntau tshaj 5 xyoos
2) Cov neeg sawv cev yuav tsum muaj kev sib raug zoo ntawm kev lag luam hauv kev lag luam steel, kev lag luam refractory thiab graphite kev lag luam,
Peb muab koj cov nyiaj, kev pabcuam thiab cov khoom zoo..Yog tias koj xav tau, thov xa email tuaj rau kojinfo@cnsungraf.com