Iyada oo loo marayo daaweynta dareeraha madow (C2D) oo ay ku jiraan milix lacag ah ama milix naxaas ah, filim madow oo madow ayaa lagu sameeyay dhumuc weyn oo ah 10-15μm. Qiimaha wuu sarreeyaa laakiin muuqaalku waa mid gaar ah.
GB / T 882-2008 "PIN" Standard, dhexroor 3-100mm ah, alaabo bir ah, iwm.
Shirkaddayadu badanaa waxay soo saartaa oo iibisaa borommada awooda kala duwan, hoops, qalabka sawir qaade, qaabdhismeedka birta ah ee birta ku dhegan, iwm.