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Dr. Md Rushad Rahman
এমবিবিএস(আরপিএমসি)
,
পিজিটি(মেডিসিন)
If you don't seal the lid properly, air will get into the paint can. Over time, that causes the paint to dry out and go bad. Make sure to keep the rim of the paint can dry while you're painting, and when you're done using the paint, put the lid on nice and tight.
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