RFID Wire Seal Manufacturer China
Plastic Seal Security Tags used in overseas logistics and container sealing applications require stable RF performance, mechanical tamper evidence, and long-distance bulk reading capability. Our RFID Wire Seal series is manufactured in China for large-volume OEM and SI procurement projects involving container tracking, bonded cargo supervision, freight forwarding, and customs inspection systems. The tag uses ISO18000-6C GEN2V2 protocol with CAB1 or VBL7-NC IC solutions, supporting tamper detection and up to 11-meter reading distance under open-air conditions. Suitable for bulk deployment across ports, warehouses, cross-border transportation fleets, and export cargo management systems.
Material Anatomy
RFID wire seal is designed for high-volume container security and logistics supervision projects where conventional barcode seals fail due to manual inspection limitations or visual contamination. Unlike disposable lead seals or QR-based identifiers, the RFID structure enables non-contact identification and batch verification during cargo movement.
The housing uses industrial ABS plastic designed for outdoor logistics environments with moderate UV exposure and repetitive handling conditions. The integrated aluminum antenna structure improves stability during long-distance reading in container yards and warehouse gate channels.
The hanging-style structure allows fast deployment without additional installation tools. Once the steel wire is locked, the seal enters irreversible tamper status. Any unauthorized removal or wire breakage changes the electronic state stored in the chip memory structure.
The CAB1 and VBL7-NC chip architecture supports EPC serialization, UID verification, and tamper status management simultaneously. Compared with low-memory RFID seals, the additional User File_0 area allows integrators to store route checkpoints, inspection records, or customs event data directly inside the tag memory.
Product Parameters
| Tag Dimension | 133 × 38 × 16 mm |
| Aluminum Antenna Size | 93 × 26 mm |
| Net Weight | 50 g (without wire) |
| Chip | CAB1 / VBL7-NC |
| Protocol | ISO18000-6C GEN2V2 |
| Memory | TID/UID 112-bit + EPC/Block 192-bit + User File_0 512-bit + Reserve 112-bit |
| Operating Frequency | 860–960 MHz |
| FaceStock / Housing | ABS Plastic Housing |
| Reading Range | Up to 1100 cm (Air-Free, depends on reader) |
| Installation Method | Hanging Style |
| Characteristic | Tamper Detection |
Note: The antenna layout is optimized for long-range reading performance rather than miniature footprint reduction. This is important for container yards where reading angles are inconsistent and tags may not directly face the reader antenna.
For customers deploying the tags across multiple countries, frequency consistency between 865–868 MHz and 902–928 MHz environments can be adjusted during production calibration.
FAQ
Q: Why does reading distance decrease near stacked metal containers?
A: Metal surfaces reflect and absorb UHF signals, especially when multiple containers form narrow RF corridors. In these environments, antenna polarization and installation direction become more important than nominal reader power. Gate-channel antenna angle adjustment usually improves stability more effectively than increasing transmission strength.
Q: Can the tamper status still be detected after partial wire damage?
A: Yes. The seal structure is designed around irreversible mechanical-electrical linkage. Even partial wire destruction changes the internal conductive state. Once triggered, the tamper condition remains stored and can still be identified through compatible GEN2V2 readers.
Q: Will User File_0 memory slow down batch reading performance?
A: No. Standard EPC identification uses EPC memory first during anti-collision reading cycles. User memory is typically accessed only after tag selection. Therefore, the 512-bit User File_0 area does not significantly affect high-density bulk reading efficiency during gate scanning operations.
Q: How does prolonged UV exposure affect the ABS housing?
A: Long-term UV exposure mainly affects surface appearance before structural performance. In practical container-yard applications, the larger concern is thermal expansion combined with mechanical vibration. The housing material formulation prioritizes dimensional stability to reduce locking deformation under outdoor temperature cycling.
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