China's leading manufacturer of high-end connectors
Rugged. Precise. Customized.
Connecting Your Innovation.
Rugged. Precise. Customized.
Founded in 2010, Yolong Connectors has evolved into a leading manufacturer of high-performance industrial connectivity solutions. We specialize in the design, vertical manufacture, and deployment of ruggedized interconnects for mission-critical sectors, including Aerospace & Defence, Robotics, Medical, Industrial Automation, and 5G Communications.
Backed by a fully vertically integrated supply chain—from precision mold making to automated assembly—and ISO9001/IATF16949 certifications, YoLong delivers superior connectivity solutions ranging from Mil-Spec and M-Series connectors to custom cable assemblies, empowering innovation in the world’s most demanding markets.
- 16+ Years Professional Service
- 30+ Cooperated Countries
- 2000+ Happy Customers
- 10000+ High-quality Products


Certifications
Latest News

Industrial Connector Certifications Explained: UL, CE, TÜV, IP, and IEC Standards Guide
Every industrial connector sold in regulated markets carries certification marks.

MC4 Solar Connector Complete Guide: Types, Compatibility, Installation, and IEC 62852 Compliance
MC4 connectors are installed in more solar PV systems worldwide

VG95234 Connectors in Railway Applications: Standards, Selection, and Installation
VG95234 is the dominant circular connector standard in European railway

VG95234 Connector Selection Guide: Shell Sizes, Insert Arrangements, and Contact Types
VG95234 connectors offer over 49 insert arrangements, 12 shell sizes,
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