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chemical formulas . the scientific educational background is hand-drawn on a whiteboard..
Industry environment impact inspector team work investigate danger chemical oil gas leak with safety face mask
Oil droplets created an art image on light grey light effects background.
Blue barrel drum on the pallets contain liquid chemical in warehouse prepare for delivery to customer by made to order. Manufacture of chemicals production. Oil and chemical industrial works concept
Chlorine tablet for swimming pools. Chemical products for the maintenance of swimming pools in the form of round tablets to keep the water and ph clean by adding chlorine to the swimming pools.

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