1. Lub hnab ua, ntsuas, txhaws, sealing, txiav thiab suav tag nrho cov tiav lawm.
2.Txawm li cas los xij nyob rau hauv kev tswj kav ntev lossis yees duab-hluav taws xob xim tracing, peb teeb lub hnab ntev thiab txiav hauv ib kauj ruam.Lub sij hawm thiab zaj duab xis txuag.
3. Qhov kub yog nyob rau hauv kev ywj pheej PID tswj, tsim nyog rau cov khoom ntim sib txawv.
4. Lub tshuab tsav tsheb yog qhov yooj yim thiab txhim khu kev qha, thiab kev saib xyuas yooj yim.
5. Cov khoom siv yuav tsum yog cov yeeb yaj kiab zoo li: PET / PE, Ntawv / PE, PET / AL / PE, OPP / PE.