I. Kev Taw Qhia:
Lub crease & stiffness qauv cutter yog tsim rau txiav cov qauv uas yuav tsum tau rau crease & stiffness test xws li ntawv, cardboard thiab nyias daim ntawv.
II. Khoom nta
Stamping qauv, raug sampling, yooj yim thiab ceev
III. Kev ua raws li cov qauv
QB/T1671
IV. Qauv loj
38 * 36mm