Ngwa eji:
A na-eji ya nwalee nguzogide ọkụ na mgbochi mmiri nke akwa akwa, uwe, akwa akwa, wdg., Gụnyere ọtụtụ akwa ngwakọta.
Mezuo ọkọlọtọ:
GTT11048, ISO11092 (E), ASTM F1868, GB / T38473 na ụkpụrụ ndị ọzọ.