[Office Partner Information Center] Copy paper is frequently used in daily office, and printed text, forms, legends and other information are all indispensable. It is one of the office essential office supplies.
Here are some things to note when purchasing and using:
1, eye protection knowledge should understand, not the more white the better
What kind of ordinary printing paper is best? I think most people will answer, "A white cover is ugly," the whiter the better.
In the market, copy paper is distinguished by color, and copy paper can be divided into two categories: bleaching and white. National standards require that the whiteness of copy paper be below 95°, not as white as possible.
The printing effect of the special white copy paper is good and more beautiful. It is recommended to print the external text. The copy paper used for internal communication and information transmission of the company uses this white copy paper.
According to the quantitative distinction, copy paper is usually divided into 70 grams and 80 grams.
The national standard for copy paper requires that the quantitative deviation of copy paper is 70g ± 4%, 80g ± 4%. That is, the copy paper with a basis weight of 70 grams, 67 grams - 73 grams is considered to meet the national standard; the copy paper with a basis weight of 80 grams, 77 grams - 83 grams are considered to meet the national standards. Many small and medium factories
In order to increase profit margins, the products are usually negative deviation products, namely 67-69 grams or 77-79 grams.
Shopping tips:
★ Economical and applicable point of view, 70 grams of neutral copy paper should be sufficient for general office paper; and 80 grams of copy paper is recommended for external use;
★ According to national standards, 70g and 80g A4 500 sheets/bag of copy paper, the standard weight is 2.12825kg, 2.4948kg. If the weight purchased is less than the above weight, it is a negative deviation product.
★ Due to the processing technology, the paper thin is not necessarily enough, the specific measurement method is the same as above.
According to the production process, the copy paper can be divided into acid paper and neutral paper, which consumers must recognize.
The neutral paper is 100% wood pulp, the pulp flexibility is better than the straw pulp, and the bonding force between the pulp and the filler is good. The equipment has small friction and is not easy to generate dust during use, and has good protection for the machine and the operator. effect.
Most of the acid papers are straw pulp and grass wood pulp. The softness of the pulp is poor, dust is easily generated, and paper jam occurs. The acid paper has corrosive effect, making the paper easy to turn yellow and brittle, not easy to store for a long time, and it is easy to produce acid gas at high temperature, which is harmful to the human body.
There are two types of terracotta pots, one is unglazed terracotta pots, and the other is glazed terracotta pots.
Terracotta pots are an excellent choice for most people who are using plants. They can retain their original color. According to the content of clay, they are divided into red, orange, yellow, brown, white, and light gray.
Pottery pots have better drainage than plastic pots and have better air circulation on the side. They are suitable for growing plants that require soil to dry out as soon as possible. If plants are afraid of soil water accumulation, pottery pots can also be used for planting, such as Common tiger skin orchids, aloe vera or succulents, etc.
The Terracotta pot is a relatively durable natural material. It also has a strong decorative effect. After a long time, it will turn into a bronze color. It is very classic. Moreover, the pottery pot has a certain weight and is not easy to tip over like a plastic pot. It also has strong drainage and breathability.
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