Connecting Innovation — Precision Alloy Solutions for a Smarter World
From optical modules to EV systems, we craft every connector shell with excellence, empowering reliable connections and future-ready technology.
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From optical modules to EV systems, we craft every connector shell with excellence, empowering reliable connections and future-ready technology.
Circling Hardware Products Co., Ltd is a manufacturer established in June 2017, specializing in the development and production of high-precision zinc and aluminum alloy connector shells.
Our expertise spans across optical communication modules and next-generation electric vehicle systems, delivering components that meet the highest standards of durability, conductivity, and dimensional accuracy.
Zinc & aluminum alloy shells with micron-level tolerances
Advanced blasting, polishing, and finishing techniques
SFP, QSFP, OSFP, CXP, and more
Plug housings and connectors for new energy vehicles
We develop, manufacture, and assemble high-quality, cost-effective components to meet our customers' vertical integration demands across multiple industries.
Precision enclosure for Small Form-factor Pluggable transceivers used in data communication and telecommunications.
Optical Module
Quad Small Form-factor Pluggable housings supporting high-density, high-speed data transmission in data centers.
Optical Module
Octal Small Form-factor Pluggable enclosures designed for next-gen 400G/800G optical modules with superior thermal management.
Optical Module
High-density CXP interconnect housings for 120 Gbps applications, ideal for InfiniBand and high-performance computing.
Optical Module
Die-cast aluminum housing for automotive shark fin antennas, providing EMI shielding and structural integrity.
Auto Parts
Robust connector shells for new energy vehicle charging systems, engineered for safety and durability.
Auto Parts
Sealed, ruggedized connector housings for harsh environments in industrial automation and control systems.
Industrial
Precision-molded square enclosures for industrial and telecom applications requiring high reliability.
Industrial
High-density serial-attached SCSI connector housings for enterprise storage and server backplanes.
Optical Module
Double Density Quad Small Form-factor Pluggable housings enabling 200G/400G/800G data rates in compact designs.
Optical Module
Tailored zinc and aluminum alloy parts based on customer specifications and drawings.
Custom
Engineered enclosures with enhanced heat dissipation for high-power optical and electronic modules.
Optical ModuleFrom concept to completion, we maintain strict quality control and precision engineering at every stage of production.
Advanced simulation and CAD-based product drawing design to ensure optimal casting performance and structural integrity.
Precision tooling and mold processing using CNC machining and EDM to ensure repeatability and tight tolerances.
High-pressure die casting for complex geometries with excellent surface finish and mechanical properties.
Post-casting surface treatments including sandblasting, polishing, CNC machining, and quality inspection.
We specialize in zinc and aluminum alloy die-casting, chosen for their excellent strength-to-weight ratio, thermal conductivity, and electromagnetic shielding properties.
Our components are used in optical communications (data centers, telecom), electric vehicles (charging systems), and industrial automation and control systems.
Yes, we offer full custom manufacturing from mold design and flow analysis to production and surface treatment based on customer specifications.
We manufacture housings for SFP, SFP+, QSFP, QSFP+, QSFP DD, OSFP, CXP, MINI SAS HD, and other high-speed optical interconnect standards.
We operate advanced die-casting and machining facilities with scalable capacity to meet both prototype and high-volume production needs.
Tell us what you need — we're ready to deliver precision-engineered solutions.
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