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"Like a Bridge Over Troubled Waters, Connecting the World with Trust."
⭐ World's Top 100 Waterproof Connector Solutions
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🌎 Trusted by Fortune 500 Companies in 108 Countries

Global Manufacturing Excellence

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128,500mΒ²
Dongguan Headquarters
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20,000mΒ²
Shenzhen Headquarters
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200+
Invention Patents
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30+
International Certifications
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100+
Countries Served
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280M
Annual Production
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Vertical Integration Manufacturing

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In-house Mold Workshop
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Injection Molding Center
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Pin Insertion Systems
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Potting Machines
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UL-certified Lab
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30+ Assembly Lines
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Vertical Integration
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Quality Control

International Certifications

LLT Tech maintains rigorous quality standards with 15+ international certifications

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UL 4128:2021

Medical Interconnection Systems

Waterproof connectors pass 500 disinfection cycles (0.5% sodium hypochlorite solution) with contact resistance variation ≀2mΞ©, ideal for operating room equipment.

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UL2238

Industrial Equipment Connectors

Products pass UL current cycle testing (temperature rise ≀40K) with mechanical life >25,000 cycles, suitable for PV inverters and heavy machinery.

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CE LVD+EMC

European Directive Certification

Complies with EU low voltage and electromagnetic compatibility standards, ensuring stable operation across 3,000km European railway network.

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CCC (GB4943.1)

Safety Certification

Passes 32 rigorous tests including abnormal temperature and insulation resistance, meeting China market access requirements for electrical safety.

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CE+TÜV Mark

Dual Certification

Surpasses EU standards by 15% in electrical safety indicators via TÜV Rheinland testing, suitable for industrial equipment exports.

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CQC Energy Conservation

Environmental Certification

Complies with GB/T 23331 energy management system with standby power consumption ≀0.5W, supporting green supply chain goals.

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IATF 16949:2016

Automotive Quality Management

Achieves PPM≀50 defect rate control, passing vehicle vibration (20G impact) and salt spray (96h) dual verification.

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IP68

Waterproof Protection

Passes 30-minute submersion test at 1m depth with dust penetration ≀1mg/mΒ³, suitable for underground mines and outdoor energy storage systems.

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ISO 14001:2015

Environmental Management

All waterproof connectors comply with ISO environmental standards, meeting ESG certification requirements for multinational enterprises.

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PSE (Diamond)

Electrical Safety Law Certification

Products pass 1008-hour high temperature and humidity test (85Β°C/85%), ensuring equipment safety in Tokyo Bay's salty climate.

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TÜV Rheinland EMC

Electromagnetic Compatibility

Products pass CISPR 32 Class B radiation testing (30MHz-6GHz band), ensuring 5G base station equipment meets EMC standards.

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SAA AS/NZS 60335

Australian Standards

Products pass Australian creepage distance verification (minimum 8mm) with V-1 fire rating, suitable for inland desert environments with 60Β°C daily temperature variations.

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National High-Tech Enterprise

Innovation Recognition

Over 200 connector patents (invention and utility models), with R&D investment exceeding 10%, mastering IP68 waterproof connector core technologies.

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VDE0620-1

Electrical Safety Certification

Products pass 150N mechanical strength test and 3kV withstand voltage test, meeting German Industry 4.0 equipment plug-in durability requirements.

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ISO 9001:2015

Quality Management System

Established SPC process control system (CpKβ‰₯1.67), achieving precise control of connector terminal coplanarity at +0.05mm.

Premium Waterproof Connector Solutions

Explore LLT Tech's industry-leading connector solutions for industrial robotics, photovoltaic energy storage, and harsh environment applications.

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Find Your Connector Solution

Waterproof Connector Series

M8 Waterproof Connector

M8 Waterproof Connector

IP68/IP69K rated compact connectors ideal for sensors and control systems in wet environments.

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M12 Waterproof Connector

M12 Waterproof Connector

Industry standard weather-tight connectors with superior resistance to moisture, dust and vibration.

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M14 Waterproof Connector

M14 Waterproof Connector

Heavy-duty, rugged connectors designed for use in extreme outdoor environments with excellent sealing properties.

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M15 Waterproof Connector

M15 Waterproof Connector

Compact and versatile connectors suitable for marine, automotive, and industrial applications.

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M16 Waterproof Connector

M16 Waterproof Connector

Durable connectors for power, signal, and data transmission in challenging environments.

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M18 Waterproof Connector

M18 Waterproof Connector

High-performance connectors designed for outdoor and industrial applications, offering robust sealing capabilities.

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M19 Waterproof Connector

M19 Waterproof Connector

Advanced waterproof solutions for demanding environments requiring reliable connectivity in wet or hazardous conditions.

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M20 Waterproof Connector

M20 Waterproof Connector

Premium connectors that guarantee high sealing performance for industrial machinery and heavy-duty applications.

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M22 Waterproof Connector

M22 Waterproof Connector

Large diameter connectors ideal for high-power applications that demand excellent resistance to environmental factors.

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M25 Waterproof Connector

M25 Waterproof Connector

Heavy-duty waterproof connectors for high-current, industrial-grade applications in harsh environments.

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RJ45 Waterproof Connector

RJ45 Waterproof Connector

Ruggedized Ethernet connectivity for outdoor networks and industrial automation applications.

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Metal Waterproof Connector

Metal Waterproof Connector

Premium metal waterproof connectors designed for robust industrial and outdoor use.

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Custom Waterproof Connectors

Custom Waterproof Connectors

Tailored solutions for unique waterproof connection needs in diverse industries and applications.

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Industrial Connector Series

M29 Industrial Connector

M29 Industrial Connector

High-performance connectors for factory automation systems with excellent EMI/RFI shielding.

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M45 Industrial Connector

M45 Industrial Connector

Heavy-duty connectors for high-current applications in harsh industrial environments.

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Photovoltaic & Energy Storage Solutions

T/Y-Type Solar Branch Connectors

T/Y-Type Solar Branch Connectors

Optimize solar panel arrays with reliable weatherproof branching solutions that maximize energy efficiency.

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M29/M35 Photovoltaic Connector

M29/M35 Photovoltaic Connector

Weather-resistant connectors designed for the reliable interconnection of photovoltaic panels in solar arrays.

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LPL-300A Push-Pull Connector

LPL-300A Push-Pull Connector

High-current connectors designed specifically for energy storage systems with innovative push-pull locking mechanism.

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Self-Locking Energy Storage Connector

Energy Storage Self-Locking Connectors

Secure connection solutions for battery storage systems that prevent unintended disconnection.

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T/Y-Type M Three-Way Combination

T/Y-Type M Three-Way Combination

Advanced three-way combination connectors for optimized power distribution in complex photovoltaic installations.

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T/Y-Type M Assembled Series

T/Y-Type M Assembled Series

Field-assemblable T/Y-type connectors offering flexibility and ease of installation for solar array configurations.

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LPL-500A Push-Pull Connector

LPL-500A Push-Pull Connector

Extra high-current push-pull connectors rated for 500A applications in large-scale energy storage systems.

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LPLE Push-Pull Connector

LPLE Push-Pull Connector

Enhanced push-pull connector series with improved ergonomics and reliability for critical energy storage applications.

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LUG/LC08 High Current Connector

LUG/LC08 High Current Connector

Robust high-current connectors designed for secure power transmission in renewable energy systems.

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LT63 Metal Circular Connector

LT63 Metal Circular Connector

Premium metal circular connectors providing exceptional durability and performance for new energy applications.

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Need a Custom Solution?

With 26 years of experience in connector manufacturing, our engineering team can develop custom solutions for your specific application needs.

Contact Our Engineering Team