Cov hnab yas khw muag khoom yog xa mus rau cov hnab ntim khoom ua los ntawm cov khoom siv yas yas thiab biodegradable yas resin ua cov ntaub ntawv tseem ceeb, uas yog tsim los ntawm tshuab moulding tshuab thiab ua tiav los ntawm lub hnab ua cov txheej txheem xws li kub sealing lossis kev sib txuas. Lawv siv hauv kev muag khoom, kev pabcuam thiab lwm qhov chaw los tuav thiab nqa khoom. Thaum xaiv cov khoom siv hnab yas, ua tib zoo saib cov ntsiab lus hauv qab no:
1. Ua tib zoo saib seb cov khoom nws tus kheej puas tau sau nrog cov ntaub ntawv xws li chav tsev tsim khoom, cov qauv kev ua tiav, cov lus qhia tshwj xeeb thiab qhov ntev, thiab lub peev xwm nominal load-bearing, thiab xaiv cov khoom uas ua tau raws li qhov yuav tsum tau ua ntawm cov khoom thauj.
2. Rau kev ntim cov khoom noj ncaj qha, cov khoom lag luam sau npe "rau kev siv khoom noj" lossis "rau kev sib cuag nrog zaub mov" yuav tsum tau xaiv. Nws raug nquahu kom siv cov hnab tsis muaj xim tsis muaj pob tshab, thiab nws tsis pom zoo kom ntim cov khoom noj uas muaj cua sov ncaj qha rau hauv lub hnab kom tsis txhob nchuav thiab scalding.
3. Rau cov hnab yas biodegradable, yuav tsum tau them nyiaj rau hnub tsim khoom, thiab cov khoom hauv ib xyoos yuav tsum tau xaiv ntau npaum li qhov ua tau kom tsis txhob muaj kev pheej hmoo ntawm kev puas tsuaj thaum siv vim kev ua haujlwm tsis zoo.
4. Lub ntim zoo yuav tsum tsis txhob tshaj lub peev xwm nominal kom tsis txhob muaj kev puas tsuaj rau lub hnab ntim khoom vim qhov hnyav ntawm cov khoom thauj khoom.
