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; Packaging materials | ; Packaging materials | ||
: Materials used to preserve, protect, store or transport a product, mainly made of paper or plastics. | : Materials used to preserve, protect, store or transport a product, mainly made of paper or plastics. | ||
; [[Particle classification, sieving]] | |||
: {{:Particle classification, sieving}} | |||
; [[Particle filtering]] | ; [[Particle filtering]] | ||
: {{:Particle filtering}} | : {{:Particle filtering}} |