Nyob rau sab hnub tuaj Asia, qhov nrov tshaj plaws ntawm cov hnab ntim khoom yog cov duab plaub nrog plaub lub voj.
Cov hnab no yog ua los ntawm cov khoom siv polypropylene ruaj khov thiab feem ntau muaj ntau qhov ntau thiab tsawg, los ntawm me me mus rau qhov loj. Lwm hom qauv yog lub hnab ncig, feem ntau hu ua "FIBC" lossis "Flexible Intermediate Bulk Container," uas yog tsim los thauj cov khoom ntim loj. Cov hnab no feem ntau muaj ib lub hnab los yog chute kom yooj yim thiab tswj tau cov khoom.
Lwm cov qauv ntawm cov hnab ntim ntau hauv cheeb tsam suav nrog U-panel hnab, Baffle hnab, thiab Tunnel nqa lub hnab, txhua tus muaj nws cov yam ntxwv tshwj xeeb thiab kev npaj siv.