UDI Labeling Solution

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.