Yyt255 Ho fufuleloa ho ho chesa ha ho chesa ho loketse mefuta e fapaneng ea masela a mekhatlo, masela a mang a sa lokang le lisebelisoa tse ling tse fapaneng.
Ena ke sesebelisoa se sebelisetsoang ho lekanya khanyetso ea mocheso (RCT) le ho hanela ho hanyetsa (ho boloka thepa ea sesepa (le tse ling). Sesebelisoa sena se sebelisetsoa ho kopana le ISO 11092, ASTM F 1868 le GB / T1104-2008 melao.