What are the structural forms of carton packaging?
Cartonpackagingshouldberegardedasanordinarythingindailylife.Cartonpackagingisusuallydividedintofullcover,halfcoverandheavenandearthcover.Factory-packedcartonsareusuallyfull-covered,merchants’productsarealmosthalf-covered,andmostoftheworldcoversaregif...