Ejikọ akara

DRK113 ihe ndochi anya

A haziri ma rụpụta ngwá ọrụ ahụ dị ka ihe ngosi teknụzụ dị iche iche akọwapụtara na ọkọlọtọ mba GB/T6548-1998 "Amụma nke Corrugated Board Adhesive Strength".

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