About GongBei
High-Performance PLC & I/O Solutions
Compatible with Siemens S7-200 / SMART
GongBei is a technology-driven company focused on R&D, manufacturing and global supply of PLC controllers, expansion modules and distributed Remote I/O systems for industrial automation. :contentReference[oaicite:1]{index=1}
Global Proof
70+
Models
100k+
Units shipped
70+
Countries
These milestones reflect years of continuous development and worldwide delivery experience. :contentReference[oaicite:2]{index=2}
What We Build
PLC Controllers
Standard & economical series, relay/transistor options.
Expansion Modules
DI/DO, AI/AO, mixed modules, temperature acquisition.
Signal Boards
Compact expansion for SMART/1200 applications.
Remote I/O
Ethernet / Modbus TCP / RS485 RTU distributed I/O solutions.
Why Engineers Choose GongBei
- Clear documentation, wiring and register mapping for faster commissioning.
- Reliable performance designed for real industrial environments.
- Flexible product ecosystem: controllers + expansion + remote I/O.
- Global delivery experience and support workflow. :contentReference[oaicite:3]{index=3}
Our Mission
We believe technology drives the future. GongBei keeps investing in R&D to support Industry 4.0 and smart manufacturing with practical, deployable automation products. :contentReference[oaicite:4]{index=4}
Our Journey
From 0 to 1
Early R&D with repeated testing to ensure stability and usability. :contentReference[oaicite:5]{index=5}
Product Expansion
From one model to 70+ models covering multi-scenario automation. :contentReference[oaicite:6]{index=6}
Global Delivery
100,000+ units shipped to 70+ countries and growing. :contentReference[oaicite:7]{index=7}
Let’s build your automation solution
Send your PLC model + I/O list (DI/DO/AI/AO/Temp) and communication requirements.