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Dr. Md Rushad Rahman
এমবিবিএস(আরপিএমসি)
,
পিজিটি(মেডিসিন)
They make these cool grout pens. It's like a paint marker that's designed to paint the grout lines. Instead of re-grouting an entire floor, you can buy a white grout pen, and go over all the grout lines. One tip is depending on what type of tile you're going to do, you may want to use some painter's tape or blue masking tape and tape off the grout lines.
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