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Asian people using alcohol antiseptic gel and wearing prevention mask,prevent against infection of Covid-19 outbreak,woman washing hands with hand sanitizer to avoid contaminating with Corona virus
Environmental engineers inspect water quality,Bring water to the lab for testing,Check the mineral content in water and soil,Check for contaminants in water sources.
9 New Hazard Pictogram. Hazard warning sign, isolated vector illustration
many cockroaches coming through the door, inside the apartment. Control of pests and insects, risk of contamination
Middle-aged female laboratory worker wearing blue gloves conducts lab test on food ingredients lettuce, cucumber, pork. Using microscope, she analyzes nutrients, preservatives, food safety records.

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