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Ties nrog cov Chaw Tsim Khoom Zoo Tshaj
Vim peb cov kev sib raug zoo nrog ntau tus neeg tsim khoom zoo tshaj plaws hauv kev lag luam, peb muaj peev xwm muab cov neeg siv khoom nrog tsuas yog PVA 2488 zoo tshaj plaws. Qhov kev lees paub no txog qhov zoo thiab kev ntseeg tau yog qhov tseem ceeb ntawm kev tau txais kev ntseeg ntawm cov neeg siv khoom txog kev faib khoom polyvinyl alcohol. Yog li thaum koj ua haujlwm nrog peb, koj yog tus txuas nrog ib lub tuam txhab uas txhais tau tias ua lag luam thiab sim kom puas siab puas ntsws rau txhua tus neeg siv khoom.