Automotive SIM & eSIM Solution

Drive the Future of Mobility

As vehicles evolve into always-connected software platforms, connectivity becomes mission-critical. BHDC delivers a dual-track portfolio: rugged Automotive SIMs for unwavering reliability, and flexible Automotive eUICCs for global lifecycle management. Fully AEC-Q100 qualified.

One Hardware, Global Reach

Car manufacturers today face a dilemma: ensuring hardware durability in extreme environments while maintaining the flexibility to switch network operators over a vehicle’s 15-year lifespan. BHZ bridges this gap. Our solutions are anchored in AEC-Q100 certified silicon, designed to withstand engine heat and road vibration. Whether you need a static profile for a T-BOX or a re-programmable eUICC for global export, we provide the trusted root of connectivity.

Product Ecosystem

Automotive SIM Card

Domestic T-BOX, Emergency Call (eCall)

Designed for fixed-network applications where ruggedness is the only metric that matters. Features specialized Flash Wear-Leveling technology to maximize data logging lifespan.

Automotive eUICC

Global Export Vehicles, Smart Cockpits, V2X.

Empower your fleet with remote provisioning capabilities. Compliant with GSMA SGP32 standards, this eUICC allows OEMs to update network subscriptions Over-the-Air (OTA) without physical access to the car.

Product in Detail

Stable Domestic Connectivity

Our M2M solution provides ultra-reliable, always-on connectivity for T-Box data transmission within local markets.We offer Deep Customization of COS and Applets to fit specific vehicle architectures. Deeply integrated with Chinese Tier-1 MNOs, it ensures high-speed, low-latency networks for daily driving data and entertainment.

Seamless Cross-Border

Our eSIM solution supports Multiple Carrier Profiles. For export vehicles, our eSIM solution automatically switches to the best local network based on location and traffic plan. It supports OTA remote configuration, allowing OEMs to manage connectivity life-cycles without swapping hardware.

High-Integration Hardware

Whether M2M or eSIM, the hardware is built tough. The soldered design reduces space and improves waterproof and shockproof performance, reducing hardware BOM costs by 5%~8% compared to traditional SIM slots. Verified by 20 Million+ shipments to withstand the harshest automotive environments.

Widely applicable scenarios

Telematics & T-Box

Providing stable, always-on connectivity for T-Box and Gateways to transmit real-time vehicle status, driving logs, and execute remote control commands.

Global Export Vehicles

Seamless “Go Global” strategy. For exported vehicles, our eSIM automatically switches to local operator profiles upon arrival, ensuring local rates and compliance without swapping hardware

OTA & Firmware Updates

A secure, high-bandwidth pipe for FOTA (Firmware Over-The-Air) updates. OEMs can push software patches and new features to millions of cars simultaneously and securely.

Global Export Vehicles

Seamless “Go Global” strategy. For exported vehicles, our eSIM automatically switches to local operator profiles upon arrival, ensuring local rates and compliance without swapping hardware

Why Choose BHDC ?

With over two decades of telecom experience and 350M+ annual shipments, we ensure your business continuity with proven, globally certified production and superior technology.

Proven Market Leader

We are one of the leading providers in Chinese Automotive M2M issuance. With 20 million units shipped and covering 1/3 of China's auto production, our M2M stability is proven by millions of miles on the road.

Global eSIM Resource

Rich Chinese and overseas operators resources help you "Go Global" or enter China efficiently, reducing roaming tariffs.

Complete Support System

Full support for DP+ and eIM business systems, ensuring rapid integration for eSIM workflows.

OEM-Centric Customization

With extensive experience docking with 17+ OEMs, we understand your complex integration workflows. We offer rapid implementation and deep customization for specific vehicle architectures, shortening your time-to-market.

Full-Stack Self-Research

From the eSIM Chip OS to the RSP Management Platform, our core technologies are self-developed. This autonomy ensures higher security controllability and faster response to your technical support needs.

Let’s build the future with innovation

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Automotive SIM & eSIM Solution

Drive the Future of Mobility

One Hardware, Global Reach

Product Ecosystem

Automotive SIM Card

Domestic T-BOX, Emergency Call (eCall)

Automotive eUICC

Global Export Vehicles, Smart Cockpits, V2X.

Product in Detail

Stable Domestic Connectivity

Seamless Cross-Border

High-Integration Hardware

Widely applicable scenarios

Telematics & T-Box

Global Export Vehicles

OTA & Firmware Updates

Global Export Vehicles

Why Choose BHDC ?

Proven Market Leader

Global eSIM Resource

Complete Support System

OEM-Centric Customization

Full-Stack Self-Research

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IoT Connectivity Modem

IoT SE

Automotive Secure Element

Let’s build the future with innovation

Beijing Huada Zhibao Electronic System Co., LTD.

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