Fabric-All imported ultra-high-density 600D nylon. Strong resilience. All fabrics can only be used after passing the waterproof and decolorization test and can withstand polishing up to 6000 revolutions. Hard and durable. Zippers-All zippers have passed the honed test. According to statistics, each student uses the zipper of the schoolbag about 25 times a day on…
1. Buy tailor-made. Pay attention to whether the size of the schoolbag is suitable for the height of the child. Consider the small schoolbag and choose the smallest schoolbag that can hold your child’s books and stationery. Generally speaking, the schoolbag should not be wider than the child’s body; when you carry it on your…
The staple specifications are: 26/6, 24/6 (369), 10#, 23/6-2; the sealing staples are: 35╳16, 18, 19, etc. There is at least one stapler in every office. It provides us with an ideal way to bind many pages together and store them. I believe that many students also have staplers in their homes. In fact, the…
(1) The pressure handle is made wider, increasing the force area to reduce the pressure; (2) The staple (needle outlet) is very sharp and thin, reducing the force area and increasing the pressure; (3) The base is made wide, which is beneficial to reduce the pressure; (4) The stapler is a lever with a shaft…
The ball is used to directly contact the paper surface to generate friction when writing so that the ball rolls in the ball seat and brings out the ink or ink in the pen core to achieve the purpose of writing. A ballpoint pen is a pen that uses ink and different pigments to write.…
By color ⑴ Monochrome ballpoint pen: This is the most common ballpoint pen, often in blue, black, red, etc. ⑵ Two-color ballpoint pen: generally red and blue two-color. ⑶ Three-color ballpoint pen: red, blue, and black. ⑷ Four-color ballpoint pen: red, blue, black, and green. In addition to these four, there are six-color, eight-color, and…
The main components of the ballpoint pen ink formulations of various colors include dyes, film formers, solvents, dispersants, and other additives. The basic ingredients of the formula: dye 5%-25% film former 5%-15% solvent 30%-60% dispersant 5%-20% other additives 2%-10%.
1. Go to a regular store to buy stationery products produced by regular manufacturers. Generally, regular supermarkets or franchise stores will choose regular channels for purchase. 2. Try not to buy rubbers with cute shapes and fragrances as their selling points. Often, the more complex the process, the more chemicals are added. 3. When purchasing,…
1. Ordinary eraser Ordinary erasers can be divided into 2b erasers and 4b erasers. They can be used to wipe pencil writing and are the most common type of eraser. 2. Sketch eraser The erasers used in sketching and painting can be divided into art erasers, plastic erasers and high gloss erasers. The art erasers…
1. Principle It removes handwriting by absorbing graphite. This kind of eraser can not only erase handwriting (in fact, it can accurately remove handwriting), it can also be used to highlight important parts or make the work more detailed. However, it is not good at removing large areas of handwriting, and it will stain or…
