Qhwv zaj duab xis, tseem hu ua stretch zaj duab xis, yog tsim nrog import los polyethylene addin exterula, thiab muaj cov txiaj ntsig zoo hauv qab no:

1.Qhov zoo ncab kev ua tau zoo, zoo transparency, thiab lim sib xyaw.
2.Nws tau ntev ntev, kev tsim txiaj zoo, cov kua muag sib txuas zoo, thiab kev siv tus kheej zoo tshaj plaws ntawm tus kheej.
3.Nws yog ib puag ncig cov khoom siv zoo nkauj, tsis muaj ntxhiab thiab tsis muaj tshuaj lom.
4.Nws tuaj yeem tsim cov khoom lag luam nplaum ib leeg, txo cov suab nrov thiab txo cov txheej txheem plua plav thiab cog qoob loo thaum lub sijhawm kev thauj mus los thiab chaw khaws khoom.

Peb cov yas qhwv tau ntev ntev ntev ntev, muaj qhov zoo elasticity thiab transverse kua muag tiv thaiv. Qhov no ua kom koj cov khoom qhwv tau raug teeb meem ruaj ntseg thiab tiv thaiv los ntawm kev puas tsuaj, txawm tias muaj cov xwm txheej nyuaj tshaj plaws. Cov yeeb yaj kiab tus kheej-nplaum ncej puab pob qij txha txuas ntxiv txhim khu nws lub peev xwm los tiv thaiv koj cov khoom, muab kev thaj yeeb nyab xeeb thaum lub sijhawm thauj mus los thiab khaws cia.

Ntxiv nrog rau nws cov kev ua tau zoo, peb cov ntaub qhwv yas yog ib puag ncig phooj ywg thiab cov khoom siv hloov dua tshiab. Nws yog tsis muaj ntxhiab thiab tsis muaj tshuaj lom, ua rau nws muaj kev nyab xeeb thiab muaj kev nyab xeeb rau koj cov kev xav tau ntim khoom. Nrog rau kev ua kom pom tseeb rau kev ruaj ntseg, peb cov yeeb yaj kiab ntim tau tsim los txo qis kev tiv thaiv ib puag ncig thaum muab kev tiv thaiv ntau tshaj plaws rau koj cov khoom.

Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm peb cov ntaub qhwv yas yog lub peev xwm los tsim cov khoom lag luam nplaum ntawm ib leeg. Qhov tshwj xeeb no txo ​​lub suab nrov uas tau tsim tawm thaum lub sijhawm qhwv thiab txheej txheem ncab, tsim ib puag ncig ua haujlwm ntau dua. Ib qho ntxiv, nws yuav pab cov hmoov av ntxiv thiab xuab zeb thaum lub sijhawm kev thauj mus los thiab cia, kom koj cov khoom lag luam kom txog ntawm lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw nyob hauv lawv qhov chaw uas peb lub hom phiaj.

Txawm hais tias koj yog ntim khoom rau thauj, chaw cia khoom lossis faib khoom, peb cov ntaub qhwv yas yog qhov zoo tagnrho rau kev ua kom koj cov khoom muaj kev nyab xeeb. Nws cov ntsiab lus siab tshaj plaws thiab cov qauv zoo nkauj hauv nroog ua rau nws muaj ntau yam thiab txhim khu kev qha rau ntau yam kev xav tau ntim.