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  • DRK-DHG cua tshuab ziab khaub ncaws

    DRK-DHG cua tshuab ziab khaub ncaws

    Ua nrog cov qib siab laser thiab cov lej tswj cov khoom siv; siv rau ziab, ci, wax melting thiab sterilization nyob rau hauv industrial thiab mining enterprises, kuaj, scientific research units, thiab lwm yam.