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With the development of seed commercialization, due to the influence of unscrupulous traders, there is a serious problem of trust between the seed companies and the farmers. There are many news reports that the farmers have bought fake seeds, which will undoubtedly affect the seed enterprises in the minds of farmers. The impression, therefore, is to increase farmers' trust in the enterprise and further promote the use of superior seed varieties. The key lies in how to build a bridge of trust through seed information. The seed two-dimensional code traceability system provides a unique “identity card†for each packet of seeds. "It has made it more difficult for seed producers to fake and sell fake products, and it can better guarantee seed security. At the same time, it has also built a bridge of trust for seed security between enterprises and users, and has also contributed to the development of the seed industry."
The seed two-dimensional code is clearly provided by the agricultural sector in the seed security. Through the seed two-dimensional code, the user can clearly know the source and quality of the seed, which is more convenient for the user to choose, and the enterprise must provide the seed for the user. The dimension code needs to rely on the professional seed two-dimensional code traceability system to realize the seed seeding process, and use seed two-dimensional code traceability to record the seed related information.
The research and development of the seed two-dimensional code traceability system is based entirely on the "Code for crop seed tag two-dimensional codes" issued by the Ministry of Agriculture. Therefore, the seed code provided by the system also meets the requirements of related regulations and can be used for each bag. Seeds provide unique identification code information, which is equivalent to a person's identity card. Once a problem arises, the company can quickly find the source of the problem, and users can quickly search the whole process of seed production by using a mobile phone to scan it. It solves the difficult problem that the peasants purchase seed but has no knowledge of the seeds they purchase, and strengthens the communication between the enterprise and users.
In today's increasingly stringent seed security requirements and increasingly fierce competition in the seed market, seed companies have not been able to increase the quality of their products to win the favor of consumers, and the emergence of seed two-dimensional code tracking system Undoubtedly, it provides powerful scientific and technological management support for major seed companies, which can help excellent enterprises to develop better, and at the same time be free from counterfeit and shoddy goods and safeguard the legitimate rights and interests of enterprises.
CAS NO.:1333-86-4
EINECS NO.: 215-609-9
Carbon black is an amorphous carbon. It is a light, loose and very fine black powder with a very large surface area ranging from 10 ~ 3000m2 / g. it is the product of incomplete combustion or thermal decomposition of carbonaceous substances (coal, natural gas, heavy oil, fuel oil, etc.) under the condition of insufficient air. Those made of natural gas are called "gas black", those made of oil are called "lamp black", and those made of acetylene are called "acetylene black". In addition, there are "slot black" and "furnace black". According to the properties of carbon black, there are "reinforced carbon black", "conductive carbon black", "wear-resistant carbon black", etc.
By production
It is mainly divided into lamp black, gas black, furnace black and tank black.
By purpose
According to different uses, carbon black is usually divided into pigment carbon black, rubber carbon black, conductive carbon black and special carbon black.
Carbon black for pigment - internationally, according to the coloring ability of carbon black, it is usually divided into three categories, namely high pigment carbon black, medium pigment carbon black and low pigment carbon black. This classification is usually represented by three English letters, the first two letters represent the coloring ability of carbon black, and the last letter represents the production method.
By function
It is mainly divided into reinforced carbon black, colored carbon black, conductive carbon black, etc.
By model
It is mainly divided into N220, N330, N550, n660, N990, n110, n115, n234, n326, N339, N375, n539, N550, n880, etc.
According to the use and use characteristics, carbon black can be divided into three categories: rubber carbon black, pigment carbon black and conductive carbon black.
Carbon black for rubber, such as tire industry, rubber seals, shock absorbers, etc. a certain amount of carbon black in rubber products can play the role of reinforcement and filling to improve the performance of rubber products.
Pigment carbon black is mainly used as black pigment in ink, paint and other industries.
Conductive carbon black makes use of the low resistance or high resistance of some carbon black to make it different from different products, such as conductive rubber, radio components, etc.
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