Obere koodu QR nwere aka dị elu nke na-ese eriri Laser Marking Machine
Nkọwa dị mkpirikpi:
Igwe nrịbama laser ejiri aka bụ ngwaọrụ ụlọ ọrụ na-arụ ọrụ nke ọma na nke ziri ezi ejiri maka akara na-adịgide adịgide na ihe dị iche iche. Njirimara lts gụnyere oke nkenke na idoanya, dabara adaba maka ịka akara na ngwa nkenke; nhazi na-abụghị kọntaktị, nke na-ezere mmebi nke workpiece; na ngwa ngwa zuru oke, enwere ike iji ya na ihe dịka ọla na plastik.