Thaum peb cov neeg siv khoom tau txais ob theem tsheb stacker, lawv pab neeg tau sib sau ua ke tam sim ntawd. Lub tshuab nqa no yog galvanized los tiv thaiv nag thiab hnub kom qeeb lub sijhawm xeb. Ua li no, cov khoom siv hluav taws xob thiab cov khoom siv kho tshuab yuav siv tau ntev.
Lub sijhawm tshaj tawm: Cuaj hlis-25-2023