Cov khob yas yog cov ntim khoom pov tseg uas tsim los ntawm cov khoom siv xws li polypropylene (PP) thiab polycarbonate (PC). Lawv yuav tsum ua raws li *National Food Safety Standard for Plastic Materials and Articles in contact with Food* (GB 4806.7-2016) thiab cov qauv kev lag luam * Yas Haus khob* (QB/T 4049-2021); tshwj xeeb, kev siv cov khoom siv PC raug txwv tsis pub tsim cov khob yas rau cov menyuam mos thiab menyuam yaus. Cov khoom lag luam yuav tsum tau ua kom pom cov ntaub ntawv hais txog cov khoom siv, tus lej daim ntawv tso cai tsim khoom, thiab "QS" cim; Cov cheeb tsam uas tsis ua raws li kev sib khi muaj xws li sealing kev ua tau zoo thiab cuam tshuam tsis kam.

Cov khob yas yog ua raws li qhov yuav tsum tau ua ntawm qhov kub thiab txias tsis kam; Thaum yuav khoom, cov neeg siv khoom yuav tsum xyuas kom lub khob tsis muaj impurities thiab tsw thiab tsis deform yooj yim. Cov khob yuav tsum tau muab ntxuav thiab tshuaj tua kab mob ua ntej siv thiab ntxuav tam sim tom qab tuav cov kua txiv hmab txiv ntoo lossis dej haus carbonated; lawv yuav tsum tau hloov yog tias qhov chaw ua ntxhib los yog stained. Hauv cov cheeb tsam xws li Hainan, cov kev nplua rau kev tswj hwm raug txiav txim rau kev siv cov khoom siv pov tseg uas tsis yog -degradable yas khob ua los ntawm PP, raws li * Cov Kev Cai ntawm Hainan Tshwj Xeeb Economic Cheeb Tsam ntawm Kev Txwv Tsis Pub Siv Cov Khoom Siv Tsis Muaj -degradable Plastics *. Txij li xyoo 2022, kev muab cov khob yas uas tsis yog- degradable ntawm cov davhlau ya nyob hauv tsev tau raug txiav lawm.