Since 2015

Leading Manufacturer of High-Performance Underwater Connectors & Subsea Solutions

From ROVs and AUVs to Offshore Energy and Defense, HYSF delivers reliable power and data transmission for the world’s most demanding underwater environments.

Trusted by Global Leaders in Subsea Technology & Marine Engineering

Comprehensive Subsea Connectivity Solutions

Engineered for reliability in the most extreme environments. Explore our range of high-performance underwater connectors designed for ROVs, sensors, and offshore energy systems.

WHY CHOOSE HYSF

Your Reliable Partner in Extreme Subsea Environments

With 11+ years of dedicated manufacturing expertise, HYSF delivers high-performance underwater interconnect solutions that bridge the gap between complex engineering and deep-sea reliability. We don’t just sell connectors; we provide the lifeline for your subsea missions.

7,000m Depth Rated Integrity Every HYSF connector undergoes rigorous pressure testing in our advanced facilities. Designed to withstand up to 700bar, ensuring zero-leak performance for ROVs, AUVs, and deep-sea sensors.
100% Industry Compatibility Our products are engineered to be fully interchangeable with mainstream global brands (like SubConn). This allows for seamless integration into your existing systems without the need for costly redesigns.
Rapid Customization & OEM/ODM From unique pin configurations to specialized cable vulcanization, our engineering team provides fast-track prototyping and custom solutions tailored to your specific project timelines.
Corrosion-Resistant Durability Utilizing premium materials—from high-grade Neoprene to Stainless Steel and Titanium—HYSF connectors are built to thrive in high-salinity and harsh offshore conditions.

Engineering Support & Technical Integrity

We empower marine engineers with full technical transparency. Access our comprehensive resource library to ensure seamless integration into your mission-critical subsea systems.

3D Models & STEP Files

Accelerate your design cycle with precision. We provide 2D drawings and 3D STEP files for our entire product range, allowing for immediate integration into your CAD assemblies.

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Technical Datasheets

Access in-depth electrical and mechanical specifications, including detailed pin-out diagrams, current ratings, and pressure-tolerance curves for accurate component selection.

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Certified Quality

HYSF operates under strict ISO 9001 management. All connectors are CE and RoHS compliant. Material Traceability Reports (MTR) are available upon request for your quality audits.

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7,000m Depth Rated

Validated in our in-house hyperbaric chambers up to 700bar. Every batch undergoes 100% insulation and continuity testing to guarantee zero-leak performance at extreme depths.

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Engineered for Diverse Subsea Missions

HYSF connectors are the trusted choice across multiple industries, providing reliable connectivity from shallow waters to the deepest ocean trenches.

ROV / AUV & Marine Robotics

Delivering high-speed data and stable power links for navigation, propulsion, and HD imaging systems in modern marine robotics.

Offshore Oil & Gas

Rugged, high-pressure connectors designed for subsea wellheads, pipeline monitoring, and platform power distribution in harsh environments.

Marine Research & Sensing

Precision interconnect solutions for oceanographic sensors, sonar arrays, and environmental monitoring instruments at extreme depths.

Defense & Subsea Security

High-security, tactical-grade connectors for submarine systems, naval sensors, and autonomous underwater defense vehicles.

HYSF's engineering team provided exceptional support during our offshore pipeline monitoring project. We needed a custom L-shaped connector with a specific pin configuration on a very tight deadline. They delivered a high-quality prototype in record time and supported us through the entire testing phase. Their technical expertise and rapid response are second to none.

Switching to HYSF connectors was a game-changer for our ROV production line. Their Miniature Series is 100% compatible with our existing industry-standard setups, but with significantly better lead times and competitive pricing. The quality control is on par with top-tier global brands. It has allowed us to scale our assembly without compromising on reliability.

We have been using HYSF's Metal Shell series for our deep-sea sensor deployments at depths exceeding 5,000 meters. The pressure integrity and corrosion resistance are outstanding. Even after months of continuous submersion in harsh saltwater conditions, the data transmission remains flawless. HYSF is now our go-to partner for high-pressure connectivity.

Proven Solutions in the Field

A showcase of our successful collaborations with global marine robotics, energy, and research partners. Every project reflects our commitment to zero-leak integrity and operational reliability.

Miniature Subsea Watertight Connector (Marine Bronze Base)

Custom Miniature Single-Core In-Line Watertight Connector

Custom 6-Port Watertight Enclosure & Subsea Interconnect System

Right Angle Molded Micro Bulkhead Connector (LPMBH-IL12/16MF Compatible)

70MPa Ultra-High Pressure Metal 61-Pin Subsea Connector

All-New Next-Generation Subsea IP Network Camera Series

HYSF-140A-180A-high-current-underwater-power-connector-for-thrusters

Custom 6-Port Watertight Enclosure & Subsea Interconnect System

MCPBOF2-8MF Oil-Filled Pressure Compensated Connector (8-Pin)

High-Frequency Subsea Coaxial RF Connector Assembly (50-3 / 50-5)

5MP High-Definition Underwater Observation Camera (40MPa)

MCBH-Hybrid 4+2 Photoelectric Subsea Connector (Power & Fiber Optic)

Custom Molded Subsea Penetrator with Integrated Multi-Core Cable

HYSF-high-density-25-pin-subsea-signal-connector-for-oceanographic-sensors

Custom Retractable Subsea Spiral Coiled Cable (Spring Cable)

Custom Branching Subsea Cable Network (Y-Splitter & Multi-Node)

Custom Subsea Bulkhead Flange Joint Connector

60MPa Metal Shell Bulkhead Connector with Triple Seal (4-61 Pins)

Single-Pin High-Current (150A) Subsea Power Connector

Ultra-Miniature Subsea Watertight Connector Series (2-28 Pins)

Custom 1-to-3 Fan-out Subsea Splitter Cable System

Integrated Subsea Interconnect & Imaging Solutions

Custom Branching Subsea Cable Network (Tree Topology)

Multi-Core Split-Type Watertight Connector (Diverse Configurations)

RMG Series 4-Pin Subsea Engineering Cable Plug

HYSF-custom-6-pin-40A-underwater-power-distribution-connector

5MP High-Definition Underwater Camera (40MPa / 316L Stainless Steel)

Custom High-Intensity Subsea LED Light & Mounting Bracket System

High-Strength Titanium Alloy Subsea Penetrator

Micro Flange 3-Pin Subsea Bulkhead Connector (IL4MF Compatible)

High-Performance Photoelectric Hybrid Subsea Connector

Gigabit Ethernet 12-Pin Subsea Connector (4 Power + 8 Network)

PBOF Series Pressure-Balanced Oil-Filled Subsea Connectors

10-Pin Ethernet Subsea Connector (2 Power + 8 Network Cores)

Custom 6-Pin / 40A Medium-Power Subsea Connector

60MPa High-Pressure Metal Shell Watertight Connector (4-61 Pins)

50MPa High-Precision Subsea Pressure Sensor

Start Your Subsea Project with HYSF

Whether you need a quick quote for standard connectors or a complex custom cable assembly, our engineering team is ready to assist. Expect a technical response within 12 hours.

John Zhang

CEO