I.Daim ntawv thov:
Cov cuab yeej ntsuas kev ntxhov siab ib puag ncig feem ntau yog siv los ua kom tau qhov tshwm sim ntawm kev tawg thiab kev puas tsuaj ntawm cov khoom tsis yog xim hlau xws li plastics thiab roj hmab nyob rau hauv lub sij hawm ntev ntawm kev ntxhov siab hauv qab nws cov txiaj ntsig taw tes. Lub peev xwm ntawm cov khoom siv los tiv thaiv ib puag ncig kev puas tsuaj yog ntsuas. Cov khoom no yog siv dav hauv cov yas, roj hmab thiab lwm yam khoom siv polymer ntau lawm, kev tshawb fawb, kev sim thiab lwm yam lag luam. Thermostatic da dej ntawm cov khoom no yuav siv tau raws li ib tug ywj siab kuaj cov cuab yeej los kho lub xeev los yog kub ntawm ntau yam kev kuaj.
II.Lub rooj sib tham Standard:
ISO 4599 Kev Tswj Xyuas Kev Lag Luam- 《 Plastics - Kev txiav txim siab ntawm kev tiv thaiv ib puag ncig kev ntxhov siab tawg (ESC) - Txoj kev khoov khoov 》
GB/T1842-1999- 《Test method for environmental stress-cracking of polyethylene plastics》
TIAB SA 1693- 《Test method for environmental stress-cracking of polyethylene plastics》