Relevant authority figures. He pointed out that pencils are divided into 18 models according to different graphite concentrations according to national standards. Among them, the national famous brand "Zhonghua Pencils" are divided into 13 models from thick to light. In the current standardized examination, the computer reading program is always suitable for the lead concentration of 2B pencils. Too thick or too light is not conducive to the correct judgment of the computer. So, how can we correctly judge the authenticity of 2B pencils? Relevant experts give readers some advice. One is to look at the wood. The real thing has been softened, and its wood is moderately soft and hard, and is mostly made of basswood. Its texture is the same on the outside and inside, and it is dark red. The fake 2B pencil is painted with red color on the top. After peeling it off, you will find that its color is white or lighter. In order to reduce costs, the wood used in fake 2B pencils has not been softened. Therefore, when sharpening the pencil, the wood feels very hard and easy to split. The second is to read the text. Genuine 2B pencils have the word "2B" printed on the barrel, and the mark is 1 cm from the top. If you compare several pens together, the position where the 2B mark is printed is the same, but if you put the fake 2B pencils together, the distance between the "2B" mark and the top is uneven. Third, the genuine product looks like the printing is fine, while the fake product has blurry printing, dark paint, and uneven surface. Regarding how harmful fake 2B pencils are, the person in charge of the relevant department pointed out that at present, in many large-scale examinations in our country, many subjects adopt the form of answering questions by machine reading cards, and the pens used to answer questions basically require the use of 2B pencils. After candidates use fake 2B pencils to answer questions, if the handwriting is too thick or too light, it will cause computer reading failure or error, and the marking machine will definitely not be able to read it correctly. Using a pencil incorrectly will not only cause losses to the candidate, but may also change the fate of a candidate's life. For this reason, relevant people remind those candidates who need to bring their own 2B pencils not to buy them from small traders. Otherwise, they will only be responsible for serious consequences. Currently, most of the fake 2B pencils sold in the domestic market come from Yiwu, Zhejiang, Shaodong, Hunan, and Linyi, Shandong. Candidates and their parents must pay close attention to the place of origin or trademark when purchasing 2B pencils. At the same time, you should also pay attention to the price of pencils. The retail price of fake 2B pencils is significantly lower than the price of genuine products. Candidates and parents must not buy fake products in the hope of cheapness. How to identify authentic and fake 2B pencils 2: 1: Authentic. (1) Trademark stamped handwriting. The trademark pattern is clear and has a full outline. The steel-stamped handwriting is overall coordinated, straight, and snow-white in color, and each one is neat and uniform. (2) Appearance. The shapes of hexagons and circles are correct, the plane is symmetrical, the diameter of the rod is uniform, the length of the pencil is uniform, and the paint color is bright and consistent. (3) Intrinsic quality. Meet or exceed national standards and write fluently. No eccentric core, no core when cutting. The wood is of high quality and crisp. (4) Price. High-end products cost 0.30 yuan/piece or more, mid-level products cost about 0.20 yuan/piece, and general-grade products cost around 0.10 yuan/piece. (5) Packaging. From small packages to large packages, the company name, model and other logos are printed clearly and completely. The inspection code and certificate are complete. 2: Fake. (1) Trademark stamped handwriting. The trademark pattern is blurry. The outline of the stamped handwriting is blurred, the color is light white or off-white, and the font size is different. (2) Appearance. The shapes such as hexagons and circles are incorrect, the plane is asymmetrical, the pencils are of different lengths, the paint color is dull and dull, and the pen barrel is rough. (3) Intrinsic quality. It does not meet national standards and the lead core is of poor quality. Because the pen shape is inaccurate and the core is seriously eccentric, the core will break during curling. The wood is rough and even rotten. (4) Price. High-end products cost less than 0.15 yuan/piece, mid-level products cost about 0.10 yuan/piece, and general-grade products cost around 0.05 yuan/piece. (5) Packaging. The printed text or patterns on the outside of the packaging are deformed, the colors are seriously out of tune, the packaging material is soft and easy to lose shape, and the large packaging is not waterproof. There is no inspection code and certificate.