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1. Background of the source supervision system of precursor chemicals
As we all know, chemically synthesized methamphetamine-type stimulants will replace heroin, and they are about to become the most widely abused drugs worldwide in the 21st century. In the process of drug processing, precursor chemicals are indispensable as raw materials or formulations. Therefore, in carrying out anti-drug work, keeping these precursor chemicals in check will play a decisive role in curbing the spread of drugs from the source.
Due to the dual nature of precursor chemicals, it is not only an important substance necessary for industrial and agricultural production and the lives of the people, but also a raw material and formulation for the manufacture of drugs. Therefore, the anti-drug department has very strict management of precursor chemicals. However, the wide scope, heavy workload, and lack of full-time personnel have caused the following shortcomings in the daily supervision of various anti-drug functional departments:
●The administrative area involves incomplete information about the production, operation, and use of precursor chemicals;
●It is impossible to grasp various business data such as the production, operation and use of precursor chemicals in real time;
● It is not possible to collect statistics on the inflow (outflow) quantity, variety, and destination of precursor chemicals within (outside) the administrative area;
●When a case occurs, it is impossible to find and locate the problem company and related business information in a timely manner;
●Can not meet the requirements of modern enterprise computer network operation and management.
Therefore, the supervision and management of precursor chemicals at the source has become very important.
2. Source supervision system and system process of precursor chemicals
The precursor chemicals supply chain consists of the processing, packaging, storage, transportation, sales, and use of precursor chemicals. To achieve the whole process of tracking precursor chemicals, it is necessary to achieve seamless connection in all links of the supply chain, to achieve the unity of logistics and information flow, so that the supply chain is in a state of transparency. Reasonable planning and implementation of information flow is the key and foundation. In order to realize the smooth flow of information, all links in the supply chain such as processing, warehousing, transportation, sales, and use should be identified. Moreover, a unique identification code must be used to accurately record, so that in the entire supply chain and market sales and use, the collection and exchange of related data puts forward higher requirements for the uniqueness and versatility of the code.
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The source supervision system of precursor chemicals is developed in accordance with the “Regulations on the Management of Precursor Chemicals” promulgated by the country and learning from the supervision experience of other management systems. The entire system includes software management, production company code assignment, warehouse company decoding code assignment, operating company decoding code assignment, end user decoding and reporting work.
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The source supervision plan of precursor chemicals applies Hanxin code/RFID identification technology, and supports the application of mobile computing and wireless network technology in the production and processing, storage, logistics and transportation, inspection and traceability of precursor chemicals. Toxic chemicals are tracked and managed throughout the entire process to eliminate potential safety hazards of precursor chemicals.
1. Production link
First of all, the manufacturer is responsible for marking or assigning codes to the finished products of precursor chemicals formed after production and processing. At this time, the production enterprise needs to securely connect with the supervision code management center through an encrypted tunnel. After obtaining permission, they have the right to use Hanxin code printing equipment and RFID read-write terminals to print the assigned supervision code number segment for code assignment and identification. .
2. Warehousing
When the precursor chemicals assigned with the production date, production license number and other information and identity certificates arrive at the storage unit, part of the content in the factory label of the precursor chemicals originally assigned by the manufacturer has been changed to the location. And time changes and need to be updated in time. Warehousing companies need to decode precursor chemicals based on specific packaging conditions before assigning codes. First, read the Hanxin code or RFID tag information with a read-write terminal, and then make the printer output the new tag through the state-designated supervision path, and write the new content into the RFID tag. At this time, precursor chemicals can continue to circulate.
3. Operating links
After the storage unit arrives at the operating enterprise, the operating enterprise must first read the identification information on the precursor chemicals package through the read-write terminal, and effectively feed the information back to the national regulatory agency through the precursor chemical supervision system. By specifying the supervision path, the printer will output the Hanxin code containing the updated content. After the read-write terminal reads and writes the RFID tag again, the tag containing the updated content will be put into use again.
4. End user link
After the precursor chemicals are delivered to end users such as scientific research and pharmaceuticals, the end users need to read the barcode or label when receiving the finished product, and at the same time transmit the read information to the national regulatory authority in a timely and efficient manner.
3. Technical Features of Hanxin Code
The precursor chemicals supply chain formed through processing, packaging, storage, transportation, sales, and use, each link plays an important role in preventing the loss of precursor chemicals. Therefore, each link must be included in real-time Supervision. Only in this way can real closed-loop control and source supervision be realized. In this closed-loop system, Han Xin code and radio frequency tags play an important role.
The picture below shows the form of “Precursor Chemicals Purchase Recording Certificate” printed with Hanxin Code.
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Han Xin code is China’s first two-dimensional code with independent intellectual property rights, and it has been determined as the national standard code system.
The technical characteristics of Hanxin code are as follows:
1. Super strong Chinese character representation ability (supports 1.6 million Chinese character information characters specified in GB 18030);
2. Chinese character coding efficiency is high (using 12-bit compression ratio, each symbol can represent 12~2174 Chinese characters);
3. High information density (it can be used to represent all the information that can be binarized, such as numbers, English letters, Chinese characters, images, sounds, multimedia, etc.);
4. Large information capacity (photos, fingerprints, palm prints, signatures, voices, texts and other digitized information can be encoded);
5. Support encryption technology (it is the first barcode with an encryption interface reserved in the code system, it can be integrated with various encryption algorithms and cryptographic protocols, so it has a strong security and anti-counterfeiting performance);
6. Strong anti-fouling and distortion ability (it can be attached to commonly used flat surfaces or barrels, and can be read when two positioning marks are missing);
7. Strong ability to correct errors (adopt the world’s advanced mathematical error correction theory, and adopt the Reed-Solomon error correction algorithm often used in space information transmission, so that the error correction ability of Han Xin code can reach 30%.);
8. User-selectable error correction capabilities (Han Xin Code provides four error correction levels, allowing users to choose from 8%, 15%, 23%, and 30% error correction levels according to their needs. Have a high degree of adaptability);
9. Symbols are cost-free (using existing dot matrix, laser, inkjet, thermal/thermal transfer, card making machines and other printing technologies, you can print Hanxin codes on paper, cards, PVC, and even metal surfaces. The additional cost is only the cost of ink, which can truly be called a “zero cost” technology);
10. The shape of the bar code symbol is variable (supports 84 versions, which can be selected by the user, the smallest code is only the size of a nail);
11. Beautiful appearance (considering people’s visual acceptance ability, it has outstanding characteristics in visual sense).
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