xov xwm kev lag luam
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Tus nqi ntawm 3M lub teeb lub thawv ntaub
Rau cov phooj ywg uas xav ua 3M lub teeb lub npov cov cim, qhov kev txhawj xeeb tshaj plaws yog tus nqi, pes tsawg square meter, yog tias nws tshaj li lawv cov peev nyiaj, lossis yog tias qhov zoo yog qhov zoo, lawv yuav tsum tau siv nws. Txawm li cas los xij, yog tias koj nug tus nqi tsis raug, uas ua rau tso tseg kev siv 3M cov khoom ...Nyeem ntxiv
