UDI Labeling Solution
Medical and health care products · Small Batch · Digital Printing
📋 Industry Overview
UDI (Unique Device Identification) is a mandatory compliance requirement imposed by China's National Medical Products Administration (NMPA) for Class III and Class II medical devices. Lexiang Packaging provides UDI label customization services that comply with GS1 standards, supporting item-level variable data printing for DI (Device Identifier) + PI (Production Identifier). Encoding formats include GS1-128 barcodes and DataMatrix 2D codes, with seamless integration into enterprise ERP/MES systems. With a minimum order quantity of 50 pieces, 3-day sampling, and 5-day delivery, we help medical device companies efficiently achieve UDI implementation while ensuring full regulatory compliance.
💡 LeXiang Solutions
Industry Overview
UDI (Unique Device Identification) is a mandatory compliance requirement imposed by the National Medical Products Administration (NMPA) on Class III and Class II medical devices. Lexiang Packaging provides GS1-compliant UDI label customization services, supporting variable data printing for each unit with DI (Device Identifier) + PI (Production Identifier), covering encoding formats including GS1-128 barcodes and DataMatrix 2D codes, with seamless integration with enterprise ERP/MES systems. With a minimum order of 50 units, 3-day sampling, and 5-day delivery, we help medical device companies efficiently complete UDI implementation while maintaining compliance.
Industry Background and Current Status of UDI Labels
Strengthening Policy Enforcement
The NMPA issued the "Medical Device Unique Identification System Rules" in 2019, requiring full UDI implementation for Class III medical devices and phased rollout for Class II devices. By 2026, all 31 provinces nationwide have incorporated UDI into medical device bidding evaluation scoring criteria. UDI implementation is not optional—it is a fundamental market access threshold for medical devices. Non-compliant companies face multiple penalties including product removal for rectification, suspension of registration certificates, and revocation of hospital supply qualifications.
Increasingly Stringent and Detailed Encoding Standards
UDI consists of two components: DI (Device Identifier) and PI (Production Identifier). The DI remains fixed and identifies product-level information (manufacturer identification code + product code); the PI varies per unit and contains production information including batch number, serial number, and expiration date. Encoding formats must comply with the GS1 standard system, with barcode carriers including GS1-128 (1D barcode) and DataMatrix (2D matrix code). Some export-oriented companies must also meet the dual-track encoding requirements of EU CE MDR and FDA UDI.
Convergence of Implementation Pain Points
Chinese medical device companies face three core obstacles in UDI implementation: First, traditional flexographic/gravure printing cannot achieve per-unit variable data printing—producing different batch numbers on the same production line requires plate changes, resulting in extremely low efficiency; Second, UDI data needs to integrate with ERP/MES systems, with label data automatically generated and sent directly to printing equipment, a capability that small and medium-sized enterprises lack; Third, the association rules between DI and PI are complex, with cases of entire batches of labels being scrapped due to a single encoding error being commonplace.
Core Technical Requirements for UDI Labels
Per-Unit Variable Data Printing
The core requirement of UDI labels is the uniqueness of each product. Traditional printing methods, whether flexographic or gravure, produce identical encoding on all labels—because the printing plates are fixed. Digital variable data printing resolves this contradiction: each label within the same batch can have a different serial number, different expiration date, and labels from different batches can even be mixed within the same roll. Digital printers read variable data files and change encoding content item by item during high-speed printing, with each label requiring only 0.1-0.3 seconds to complete printing and coding.
Data Hierarchy and Associated Traceability
UDI labels contain three data hierarchy levels: The first level DI (product level), where all labels for the same product share the same DI, distinguished by GS1 manufacturer identification code + product code; The second level PI (production level), where labels in the same batch share a batch number but have different serial numbers per unit; The third level AOI (assembly level), where complex devices associate multiple component UDIs to a parent UDI, enabling traceability from the complete machine down to each component. The three levels are automatically linked through GS1 Application Identifiers (AI), allowing the complete production chain to be traced with a simple scan.
Development Trends
UDI is evolving from compliance-driven to value-driven. Leading enterprises have upgraded UDI labels from mere regulatory compliance tools to supply chain management infrastructure—achieving precise inventory management, anti-channel diversion monitoring, rapid recall of defective products, and after-sales service traceability through UDI scanning. Future UDI labels will integrate RFID and NFC technologies to enable contactless traceability and full lifecycle management.
🏷️ Sub-scenarios
Class III Device UDI Label
Class III medical device UDI mandatory implementation label, including DI+PI item-level variable coding, DataMatrix QR code, compliant with NMPA UDI regulations.
Class II Device UDI Upgrade
Class II medical device UDI transition period label, for enterprises upgrading from standard barcodes to UDI labels, requiring additional PI-level information.
CE MDR Export UDI Label
For medical devices exported to the EU, must simultaneously meet both Chinese and EU CE MDR UDI coding requirements. Supports GS1\/HIBC dual-track system.
Implant Device UDI Label
UDI labels for implant devices such as cardiac stents\/artificial joints, must pass heat aging\/alcohol wipe tests, with extremely high label durability requirements.
In Vitro Diagnostic UDI Label
UDI labels for reagents\/test kits, including cold chain transportation tracking information, must withstand low temperatures of -40°C without peeling off.
R&D Sample UDI Label
Temporary UDI labels for new product development\/clinical stages, minimum order of 100 pieces, with DI information flexibly set according to trial production codes.
⚠️ What packaging challenges does your industry face?
- Variable encoding per item cannot be achieved with traditional printing The essential feature of flexographic/offset printing is "identical across the entire plate" — once the plate is made, every printed item has the same content. However, the essential feature of UDI is "unique per item". There is a fundamental conflict between traditional printing technology architecture and UDI requirements. It is necessary to switch to digital variable data printing architecture.；UDI cannot be implemented → products cannot be launched. Some enterprises use handwritten labels instead → unclear writing causes scanning failures → hospitals refuse acceptance. Handwritten batch numbers are more error-prone, and when the traceability chain breaks, affected batches cannot be located.
- Difficult integration with UDI data management systems UDI implementation involves data flow across three systems: the registration management system (manages DI information), the production execution system (manages PI information), and the printing equipment (outputs labels). Small and medium enterprises typically only have a simple ERP and lack MES and coding software. Manual data transfer between the three systems is the main cause of errors.；Data transfer errors cause label DI/PI information mismatch → entire batch scrapped. Incomplete UDI data archiving → failure of regulatory unannounced inspections. Export enterprises are turned back because data format does not meet FDA/EU requirements.
- Dual-track encoding standards increase implementation difficulty China adopts the GS1 global unified encoding system, where DI consists of a manufacturer identification code plus a product code. EU CE MDR allows either GS1 or HIBC encoding systems, with HIBC characterized by machine-readable compact encoding. The AI code rules, check digit algorithms, and carrier requirements of the two systems are different and cannot be compatible.；Export enterprises need to maintain two sets of label designs, doubling management complexity. Non-compliant export product labels → detained or recalled by customs. A medium-sized export device enterprise loses 500,000-2,000,000 RMB/year in overseas orders due to UDI label non-compliance.
- High UDI label costs during small-batch sample trial production The cost structure of flexographic/offset printing is fixed: fixed plate-making fee plus variable printing fee. The plate-making fee is unrelated to print quantity but accounts for over 90% of the total cost for small batches. Digital printing's zero plate-fee structure naturally fits small-batch scenarios — costs are proportional to quantity, without being forced to overprint due to insufficient minimum quantities.；Excessive plate fees during small-batch stages → enterprises postpone UDI implementation. Sample labels are made manually → inconsistency in material, size, and barcode quality with formal labels, affecting compliance of registration test samples.
Lexiang Solution
Digital Variable Data UDI Label Strategy
UDI Data Integration and System Interface Strategy
Dual-Track UDI Compatibility Strategy
Small-Batch Sample UDI Label Strategy
📦 Applicable Products
❓ FAQ
What is the minimum order quantity for UDI labels?
Minimum order is 50 pieces. Digital printing with zero plate-making fee, suitable for sample R&D stage, small batch varieties, and first order verification. Stable mass production can be switched to large batch production to reduce unit cost.
Do UDI labels support GS1-128 or DataMatrix?
Both formats are supported. GS1-128 one-dimensional barcode is suitable for labels with ample space, while DataMatrix two-dimensional code is suitable for compact space requirements. The same label can output both symbologies simultaneously.
How does UDI data integrate with my ERP system?
We provide a data middleware that reads product lists and batch information from ERP, and automatically generates DI+PI codes. Data is verified by GS1 check digit algorithm before being sent to the printing machine, eliminating encoding errors at the source. Supports Excel import, API integration, and SaaS platform.
What format of UDI labels is required for exporting to EU and US?
EU CE MDR: supports both GS1 and HIBC coding systems, with DataMatrix carrier. US FDA: must comply with FDA UDI rules, GS1 standard, including DI + expiration date + batch number. We provide dual-track labeling solutions, encoding both China and export information on the same label.
How long does it take from UDI label design to delivery?
Samples in 3 days (including coding rule verification), bulk delivery in 5 days. If data is ready, rush orders can have samples out the same day. After middleware deployment (3-5 days), the first order can be produced.
What if UDI encoding errors cause label scrap?
The data middleware automatically performs GS1 check digit verification and DI/PI format checks to prevent encoding errors at the source. Digital proofs are provided before printing for barcode scanning verification, and bulk printing begins only after verification passes. In case of batch encoding errors, free reprinting is provided.
How many years must UDI label data be archived?
According to drug regulatory requirements, UDI label data must be kept for 2 years after the medical device expiration date. For products without expiration dates, the retention period is no less than 10 years. We provide data archiving services with automatic cloud backup, allowing query and export in the format required for drug regulatory reporting at any time.
How do UDI labels transition from sample stage to formal production?
The sample stage uses temporary DI codes (trial production numbers) with digital printing's zero plate-making fee for flexible modifications. After formal approval, DI is replaced with the official registration certificate number, while label design layout and materials remain unchanged. Transition from sample to formal production only requires modifying the DI field in the data file, with all other parameters unchanged.
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