Sebenzisa isixhobo:
Isetyenziselwa ukuvavanya ukungaxhathisi i-shirmal kunye nokungaxhathisi emanzini, impahla yokunxiba, ukulala, kubandakanya ukudibanisa amaqela amaninzi.
Dibana nomgangatho:
I-GBT11048, ISO11092 (e), i-ASTM F1868, GB / T38473 kunye neminye imigangatho.