Frequently Asked Questions

Our standard MOQ is 500 cards for recycled PVC and bio cards. Wooden cards have a lower MOQ of 250 pieces. For custom OEM/ODM solutions, MOQ varies depending on specifications. Contact us for a tailored quote.

Submit a quote request through our contact form with your requirements: card type, quantity, chip preference, branding needs, and any network integration details. We respond within 24 hours with a detailed proposal including pricing tiers.

Yes. Pricing scales with quantity — larger orders receive better per-unit pricing. We also offer annual supply agreements for charging network operators with recurring card needs, providing predictable budgeting and priority production scheduling.

We accept bank wire transfer (T/T), PayPal, and letters of credit for large orders. Standard terms are 30% deposit with balance before shipment. For established partners, we offer NET 30 payment terms.

Our EV charging cards primarily use High Frequency (13.56MHz) technology, which is the standard for charging station authentication. We support MIFARE Classic 1K/4K, MIFARE DESFire EV2/EV3, and NFC (NTAG) chips. Low Frequency (125kHz) options like EM4100 are available for legacy systems. Dual-frequency cards can also be manufactured.

Yes. Our RFID cards work with all OCPP 1.6 and OCPP 2.0.1 compliant charging stations. The cards authenticate via standard RFID readers and are compatible with roaming platforms including Hubject, Gireve, and e-clearing.net for cross-network interoperability.

We support MIFARE Classic 1K/4K (cost-effective fleet cards), MIFARE DESFire EV2/EV3 (high-security with AES-128 encryption), NTAG 213/215/216 (NFC-enabled), and custom chip configurations. DESFire EV3 is recommended for networks requiring anti-cloning protection and mutual authentication.

Our cards are built for daily use in demanding environments. PVC and bio cards are rated for 3-5 years of regular tapping, withstanding moisture, UV exposure, temperature extremes (-25C to 60C), and repeated bending. Each card is tested to over 100,000 read cycles. Wooden cards offer similar longevity with a protective coating.

RFID cards and Plug and Charge serve complementary roles. ISO 15118 authenticates the vehicle, while RFID cards authenticate the driver — essential for fleet management where multiple drivers share vehicles. Most modern charging networks implement both authentication methods. Our cards work alongside Plug and Charge infrastructure.

MIFARE Classic uses proprietary Crypto-1 encryption and stores data in 1KB or 4KB sectors — suitable for basic access control where cost is a priority. MIFARE DESFire EV2/EV3 uses AES-128 bit encryption with mutual authentication, supports multiple isolated applications on a single card, and provides anti-cloning protection through diversified keys. For EV charging networks handling billing data and cross-network roaming, DESFire EV3 is the recommended choice due to its security against relay attacks and its support for transaction MAC verification.

13.56 MHz High Frequency (HF) cards comply with ISO 14443A/B and offer faster data transfer (up to 848 kbit/s), encryption capabilities, and anti-collision for reading multiple cards. This is the global standard for EV charging stations, payment systems, and modern access control. 125 kHz Low Frequency (LF) cards like EM4100 and HID Prox are read-only, have no encryption, and slower data rates — they're used in legacy access control systems. We manufacture both frequencies and can produce dual-frequency cards embedding both LF and HF chips in a single card body for backward compatibility.

When a card is tapped on the charging station's RFID reader, the reader extracts the card's UID (Unique Identifier) or reads data from its secure memory sectors. The station sends an Authorize.req message to the Central System via OCPP, containing the idTag (the card's UID). The Central System checks the idTag against its database and returns an Authorize.conf response with the authorization status. If accepted, the station initiates the charging session. For DESFire cards, the reader can perform mutual authentication — both the card and reader prove their identity cryptographically before any data is exchanged, preventing card cloning and replay attacks.

Our cards use precision-etched or wire-wound copper antennas tuned to the operating frequency. For 13.56 MHz cards, the antenna consists of 3-5 turns of copper wire or etched aluminum coil embedded between the card's lamination layers, connected to the RFID chip via a bonding process. The antenna design is optimized for the ISO 14443 communication range of up to 10 cm. For wooden cards, we use a precision-milled cavity in the wood substrate to embed the antenna and chip module, ensuring consistent read performance through the natural material. Each card undergoes RF testing to verify resonant frequency and read range meet specification.

ISO 7810 defines the physical card dimensions (ID-1 format, 85.6 × 54mm). ISO 7816 covers contact interface specifications. ISO 14443A/B defines the contactless communication protocol at 13.56 MHz — the foundation for MIFARE and DESFire chips. ISO 15693 covers vicinity cards with longer read range (up to 1.5m). ISO 18000-6C governs UHF RFID. For EV charging specifically, the cards authenticate through OCPP 1.6/2.0.1 protocol, and roaming interoperability follows OCPI (Open Charge Point Interface) and OICP (Open InterCharge Protocol) standards through platforms like Hubject and Gireve.

Dual-frequency cards contain two separate RFID chip-antenna systems operating on different frequencies — typically 125 kHz (LF) and 13.56 MHz (HF) in a single card body. This is useful when a charging network needs to work with both modern OCPP stations (which use 13.56 MHz) and legacy access control systems (which use 125 kHz). We can combine any LF chip (EM4100, TK4100, T5577, HID Prox) with any HF chip (MIFARE Classic, DESFire, NTAG) in the same card, ensuring one card works across all your infrastructure regardless of age.

Card cloning prevention depends on the chip type. MIFARE DESFire EV2/EV3 provides the strongest protection: AES-128 encryption, mutual authentication (card and reader verify each other), diversified keys (each card has unique keys derived from a master), transaction MAC verification, and proximity check to prevent relay attacks. NTAG 424 DNA offers asymmetric cryptography with unique signatures per card. MIFARE Classic has known vulnerabilities — its Crypto-1 encryption can be cracked, making it unsuitable for high-security billing applications. For EV charging networks processing payment transactions, we always recommend DESFire EV3 or NTAG 424 DNA.

Standard ISO 14443 cards (MIFARE, DESFire) have a designed read range of 1-10 cm, depending on the reader's antenna power and the card's antenna design. This short range is intentional for security — it prevents unauthorized reading from a distance. The typical tap distance at EV charging stations is 2-5 cm. ISO 15693 cards offer longer ranges up to 1.5 meters but are less common in EV charging. UHF RFID (860-960 MHz) can reach 6-12 meters — used in fleet vehicle identification where windshield tags are read automatically as vehicles enter a charging depot.

During card personalization, we program the card's RFID chip using secure encoding stations. For MIFARE Classic: we write sector keys (Key A/B) and store the network's identifier in designated memory blocks. For DESFire: we create an application structure (AID), set up access conditions with AES keys, and write the authentication data file. The card's UID can be used directly as the idTag in OCPP, or we can write a custom identifier to the chip's user memory. For NFC cards (NTAG), we can format NDEF records containing URLs or custom data. All personalization happens in a secure environment with encrypted key injection.

Our manufacturing follows a 4-stage quality control process. Stage 1 — Incoming Inspection: all raw materials (PVC sheets, chip modules, antenna coils, wood veneers) are tested against specifications. Stage 2 — In-Process Checks: print registration, lamination bonding, chip embedding alignment, and antenna connection integrity are verified at each production step. Stage 3 — Final Inspection: every card is tested for RF performance (resonant frequency, read range, data integrity), visual quality (print alignment, surface defects), and dimensional accuracy (ISO 7810 compliance). Stage 4 — AQL Batch Sampling: statistical quality inspection of finished batches using Acceptable Quality Level protocols before packing and shipment.

Our recycled PVC cards use 100% post-consumer recycled PVC. The recycled material undergoes rigorous processing to meet the same durability and print quality standards as virgin PVC. The result is a card that performs identically while reducing virgin plastic consumption and diverting waste from landfills.

Yes. Our wooden RFID cards are manufactured from FSC-certified cherry wood or bamboo, ensuring the wood comes from responsibly managed forests. Each batch includes FSC chain-of-custody documentation for your sustainability reporting.

Yes. Our PPH Bio cards are crafted from renewable wood fiber and designed to naturally decompose at end of life under composting conditions. During their service life, they remain durable, moisture-resistant, and fully functional. This eliminates the long-term plastic waste associated with traditional PVC cards.

Recycled PVC cards reduce carbon emissions by up to 75% compared to virgin PVC production. Wooden cards are carbon-negative as the wood stores carbon. Our manufacturing facility uses renewable energy and holds ISO 14001 environmental management certification. We provide carbon footprint data per order for your ESG reporting.

Yes. We offer full-color offset and digital printing on both sides of PVC and bio cards. Options include network logos, custom color schemes, QR codes, serial numbers, and variable data printing. Wooden cards support laser engraving and single-color print for branding.

Yes. We offer chip programming and encoding services including UID assignment, sector key configuration, application data writing, and NDEF formatting for NFC cards. We can program cards to your charging network's specifications for plug-and-play deployment.

Beyond standard CR80 cards, we manufacture RFID key fobs, wristbands, windshield tags (for fleet vehicles), and custom shapes. All form factors support the same RFID chip options and can be branded to your network identity.

Yes. We work with charging network operators to ensure card credentials are properly configured for roaming platforms including Hubject (intercharge), Gireve, and e-clearing.net. Our team provides integration consulting to streamline the setup process.

Standard recycled PVC and bio cards: 2-3 weeks from order confirmation. Wooden cards: 3-4 weeks. RFID keyfobs: 3-5 weeks. Custom OEM/ODM solutions: 4-8 weeks depending on complexity. Express production is available for urgent orders at additional cost.

Yes. We ship worldwide via DHL, FedEx, and UPS with full tracking. Shipping costs are calculated based on order weight and destination. We handle all export documentation and customs declarations. Most European and North American deliveries arrive within 5-7 business days.

Yes. We provide sample kits for qualified charging network operators and fleet managers. Sample kits include cards with different materials (recycled PVC, wood, bio) and chip types so you can test compatibility with your charging stations and backend systems.