1. First prepare a piece of toothpaste and a towel, wet the towel first, and then put the towel into a basin of water. Wet the towel and wring it out slightly. Squeeze the toothpaste onto the wet towel. The amount of toothpaste can be controlled according to the crayon marks to prevent unnecessary w...
read moreOne late night in 1888, American journalist John Lauder held a pen in his hand to conceive his own article that should be handed over to his boss tomorrow. As John wrote his letter, the sharp tip of the pen scratched his manuscript paper. John had to write again. When he wrote again, the pen ran out...
read moreA mechanical pencil is a type of pencil that has a button on the end. It looks like a ballpoint pen, but is made of different materials. It's a great option for architects, draftsmen and people who need flexibility. The components of a mechanical pencil are usually made from a combination of high c...
read moreA marker pen is a pen that can write marks or signs on one or more materials such as paper, wood, metal, plastic, and enamel. Markers are divided into oil-based markers and water-based markers. Water-based marker pens can write on smooth surfaces or whiteboards, and can be wiped off with a rag, whil...
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