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CORONA-VIRUS: Green school blackboard in the classroom, with a banner stamp, "TEST REQUIRED" in schools
Coronavirus quick test for screening diagnosis. Physician taking a nasofaringeal sample of an adult bearded man, with a cotton swab. Taking a sample of suspected Covid19.
Quick lettering vector sketch logo
Portrait of young Asian man wearing protective mask against the coronavirus, doing pray for corona virus is quickly overcome isolated on yellow color
high technology and precision robot grip with automatic quick lock clamp or chuck for catch product work piece set up on jig figure in manufacturing process at welding factory or work shop.

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