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Dr. Md Rushad Rahman
এমবিবিএস(আরপিএমসি)
,
পিজিটি(মেডিসিন)
It's a liquid lubricant, sort of like oil. You should be able to get it in most hardware stores. Don't use it on painted surfaces or on any surfaces you have to handle. Also don't use it on any surfaces that will come in contact with food.
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