I. Solution Background
According to data from the China Meat Association, in 2008 the national per capita meat consumption was 54.8 kg, of which pork accounted for 34.8 kg. Pork products make up over 60% of all meat consumed, and their hygiene and quality safety directly affect public health and life safety. However, China's pig slaughtering industry still lags in technical management, and a full-chain supervision system covering pig breeding, slaughter, processing, distribution, and consumption has not yet been established, posing significant risks to pork quality safety. On June 1, 2009, the Food Safety Law was officially implemented, setting specific requirements for all aspects of meat production, processing, packaging, transportation, and sales. To ensure effective enforcement of the Food Safety Law and its implementation regulations, the Ministry of Commerce, together with the Ministry of Finance and other departments, initiated a pilot "Safe Meat" service system in 10 provinces and cities, exploring various practices and experiences to ensure pork quality safety. The goal is to establish a new mechanism for the healthy development of the pig slaughtering and meat distribution industry nationwide within 3 to 5 years.
In 2009, Premier Wen Jiabao visited Wuxi and elaborated on the new concept of "Sensing China" IoT sensor technology, marking the beginning of China's actual construction of the Internet of Things. Therefore, applying the key technology combining RFID electronic tags and IC cards from IoT and intelligent networks to the pork product quality traceability system is fully forward-looking. Within 3 to 5 years, this approach will adapt to China's rapid socioeconomic and technological development without requiring major framework adjustments, making it suitable for China's national conditions. Using RFID technology combined with networks and information systems for data collection and communication can improve the efficiency of information collection and transmission, effectively identify meat products, and integrate scattered information, thereby solving the difficulties in meat product traceability and achieving seamless connection across all supply chain links for full information tracking and tracing.

II. Solution Objectives
FineJoin' pork quality information traceability system follows the Ministry of Commerce's "Safe Meat" service system and establishes three major systems: the slaughter supervision support system, the meat quality safety traceability system, and the meat cold chain management system. It integrates pig breeding, slaughter, meat processing, transportation, wholesale, and retail into an online full-chain supervision system, enabling government regulators to remotely manage and supervise any link that needs oversight, anytime and anywhere. Every step of pork product sourcing can be traced in real time, ensuring accurate and timely accountability in the event of food safety incidents, and effective and timely early warning and recall measures. For consumers, it allows verification and comparison when purchasing pork products.

III. System Architecture
FineJoin, based on the implementation of the 2009 Chengdu pork product safety traceability system, proposed a solution that "uses government management model innovation to guide technological innovation, leverages high technology to transform traditional industries, and drives supply chain business process optimization with efficient and low-cost operations." It provides a complete software and hardware solution for the three systems of the "Safe Meat" service system: the slaughter supervision support system, the meat quality safety traceability system, and the meat cold chain management system.
The pork quality information traceability system is a quality safety traceability system for pigs and pork products across pig farms, designated slaughterhouses, cold chain transportation, meat wholesale markets, agricultural market meat stalls, large supermarkets and hypermarkets, catering enterprises, and designated units within the management area. It uses RFID electronic tags attached to live pigs and pork products, linked with different IC identity cards of supply chain business users, and uploads the real-time flow of pork in the supply chain to the central database via wireless transmission technology. Not only can business users log into the platform system with their permissions to access daily business data stored in the government data center at any time, but also various government departments can monitor each link online according to their jurisdiction, providing strong technical support for ensuring pork food safety.
Given the characteristics of fresh pork safety supervision, this system is divided into two parts: front-end data hardware collection and back-end data management software. The front-end data collection uses RFID core technology to monitor fresh pork production activities in real time. The back-end data management uses various government business systems to manage authentic information reported from each link, as well as to perform statistics, analysis, and distribution of the front-end collected data.

IV. Solution Operation Flow
The main stages from pig breeding to pork product sales include: breeding, slaughter, wholesale or retail. This solution starts from the pig breeding stage. By binding real-time information from different forms of RFID pork tags and supply chain personnel's RFID identity cards, it automatically links quality information and data uploads/downloads to downstream wholesale and retail stages via mobile wireless communication technology. This realizes forward tracking from pig breeding to meat retail terminals, as well as reverse tracing from meat retail terminals back to pig breeding.
Breeding Stage
Pig breeding is divided into stages: mating, pregnancy, pre-birth, piglets, and market pigs. After weaning, piglets will wear RFID electronic ear tags, which associate the piglet's ancestral information. During breeding, farm workers use RFID handheld readers to write feed information, disease prevention information, medication information, and environmental data on the piglet's or finished pig's RFID electronic ear tag. This data is uploaded to the food safety platform data center via GPRS/3G wireless communication, establishing a complete individual pig breeding file in the government data center.
Slaughter Stage
When live pigs arrive at the plant, they first undergo inspection of the border animal quarantine certificate or origin quarantine certificate, disinfection certificate, immunization card, and establishment of a pig slaughter file. Then slaughter and product inspection are conducted. Qualified pork carcasses are tagged with RFID traceability labels. At the time of departure, the RFID channel reads the pork code, which is automatically linked with the RFID identity card information of the downstream buyer obtained by the RFID traceability all-in-one machine. The all-in-one machine is also connected to an electronic scale to obtain weight, and it prints a traceable meat transaction voucher. The batch's traceability code, weight, and downstream buyer information are simultaneously uploaded to the government traceability supervision system. Each piece of pork corresponds to a unique merchant or operator, achieving information linkage between the pig's entry and the carcass's exit.
Wholesale Stage (Slide Rail Trading System)
Pork with traceability information arrives at the wholesale market via transportation. After completing entry procedures and passing inspection, it enters the slide rail trading system for wholesale. In this system, UHF readers read the traceability tag on the pork carcass, and the information is automatically linked with the slide rail hook information read by HF readers. After weighing, the upstream and downstream operator information is linked, and a transaction voucher is printed. Downstream sellers, group buyers, and individuals obtain transaction vouchers from the wholesale trading market. Transaction information between suppliers and sellers on this market enters the government data supervision center.
Retail Stage
Retail Terminal - Farmers' Market
At retail terminals such as farmers' markets and convenient meat shops, the specialized electronic scales equipped with RFID tag reading capabilities and traceable information processing functions read RFID tag data. When weighing each cut piece of pork, the printed sales receipt includes the pork identification code, and each weighing data is uploaded to the server of each farmers' market management and then in real time to the government data center via the internet.
Distribution Terminal - Supermarkets, Hypermarkets, and Pork Direct-sale Stores
In supermarkets and hypermarkets, the combined application of segmentation traceability all-in-one machines, store traceability all-in-one machines, or mini store traceability all-in-one machines facilitates connection and filing with the government data center. At the same time, RFID pork tags are converted into low-cost QR code adhesive labels provided to consumers as retail traceability vouchers.
Pork direct-sale stores cut carcass meat on site and pre-display it on shelves for consumers to choose freely. Through the traceability all-in-one machine, the pork tag is read and an adhesive traceability voucher is printed for the consumer. When the all-in-one machine has internet connectivity, the government supervision platform, market management, and slaughter enterprise monitoring center can view real-time sales data for each store, facilitating quick replenishment or inter-store product transfer within the same city.

V. Traceability and Supervision
During pork product transactions, operators or end consumers receive a pork product traceability label containing a traceability code. By using self-service inquiry terminals, the internet, inquiry phones, or SMS to input the traceability code, consumers can query the quality information of the purchased pork, including breeding location, slaughter and processing location, and inspection and quarantine details.
Under a three-tier business management platform (provincial, municipal, district) sharing one data center, government staff from departments such as commerce, agriculture, industry and commerce, quality inspection, and health can access the system at any time via the internet, according to their permissions, to view the entire process operation status and pork product information relevant to their department. Market operators under the industry and commerce department are equipped with RFID handheld patrol readers to inspect pork sold in the market. They scan the RFID tag to read backend data and compare it with the merchant's meat transaction voucher and paper documents such as the "two stamps and one certificate," truly ensuring that "single card, certificate, and tag" travel together as required by the Ministry of Commerce, preventing substandard pork from entering the circulation market.

VI. Hardware Equipment Selection
RFID Electronic Ear Tag
FineJoin M11 UHF Handheld Terminal