What We Do

We specialize in engineering connection technology, offering consulting, solutions, products, and engineering services for critical connectors in structural engineering. Our expertise in joints, bearings, seismic devices, and engineering services supports bridges and various infrastructure projects. We leverage cutting-edge innovations, particularly through our Smartz technology, to enhance structural safety, extend longevity, and increase resilience, while delivering greater ROI and reducing carbon emissions for infrastructure and buildings.

What Makes us Different

Engineering Excellence

Our product portfolio offers full coverage across all types of bearings, joints and seismic devices listed under EN and AASHTO specifications and provide innovative engineering services. We are proud of our:

Proven Global Implementation: Successfully deployed in over 30 countries, including Bridge Modular Joints for the Highest-Valued Bridge Project ($18 billion HZM Bridge, China), Structural Seismic Bearings for the Highest-Valued Building Project ($5.5 billion SoFi Stadium), and Seismic Metallic Dampers for the Highest-Valued Railway Project ($46 billion Sichuan-Tibei High-Speed Railway).

Heavy-Duty Engineering Solutions: We hold the world record for the largest Rubber Bearings (2.5m x 2.5m) and have delivered Spherical Bearings up to 100MN and Pot Bearings up to 90MN, and extensive experience in delivering ultra-displacement Modular and Finger joints with movement capacities of up to 1600mm.

Standards Compliance and Drafting: Our products fully comply with major international standards, such as EN and AASHTO, and we have extensive experience with British, Japanese, and Australian standards. With CE certifications for most major categories, we have also contributed to drafting various national level standards including JT/1270.3 Cantilever Joints in China.

Innovation transforming products into services: With over 150 patents generating more than 30% of our revenue, we provide innovative solutions for diverse engineering challenges. Our deep expertise in mechanical engineering, materials science, and IoT drives the transformation of bearing replacement into a re-manufacturing process and rotational hinges into reusable services. These innovations boost client efficiency, cost-effectiveness, and infrastructure sustainability.

TWINSA

Core Tech

Besides our engineering excellence, our key technology, TWINSA (Adaptive Digital TWIN with Smart Adapter), comprises two core elements:

Intelligent Critical Connector:

Through a groundbreaking metrological innovation called In-Situ Dual Calibration (ISDC), we've developed the world's first technology to provide reliable in-situ calibration for load monitoring and controlling of critical connectors such as bearings, cables, and bolts. This establishes dependable lifecycle load monitoring and controlling for critical connectors.

Adaptive Digital TWIN:

Leveraging Intelligent Critical Connectors, this digital twin system offers not only data-driven insights and evaluations into boundary conditions and hence deeper understanding of a structure's current state, but also adaptive capabilities to optimize load conditions in-situ. By transitioning structures into adaptive systems, it greatly enhances structural longevity and safety, reduces initial construction costs and maintenance costs, and contributes to a lower lifecycle carbon footprint.

With over 40 patents and more than 20 project experiences spanning bridges, buildings, and slopes, we're confident this technology will revolutionize the design, construction, and maintenance of structures.

"Except for the patents held by the commissioning organization of this project, there are no reports in the global literature of a calibration technology for force-measuring devices that allows for calibration under load without altering the position or load-bearing condition of the device."

TWINSA system can be used in bearings (Bearingsmart), cables (Cablesmart) and bolts (Boltsmart). In different applications, TWINSA provides the key to understand actual boundary conditions.

Bearingsmart

BoltSmart

Cablesmart

Three 14,000-ton Smart Pendulum bearings (supplied by IEC Inc., the world's largest by load capacity) are installed. Their high load and stiffness make the load distribution highly sensitive to sub-millimeter height variations.

The wind turbine tower is anchored to the base using high-strength bolts. Even tion will be achieved during installation, but various factors such as vibrations can cause changes in the bolt preload force.

Passion for technology

Cross Disciplinary R&D Team

We highly value the role of engineering connections in structural engineering and are committed to revolutionizing the field through cross-disciplinary research. Since our founding, we have built a strong technical team with diverse backgrounds and work closely with research institutes, infrastructure investors, and consultants to innovate, optimize, and deliver advanced solutions and products.

Beyond the in-house team, IEC convenes and chairs IABSE Task Group 6.8 — an international working group of researchers, bridge engineers and design masters, formed around the measured constraint force (2026–2029).

Board Directors

He Manchao

SIOT Center Chair

CAS Academician, Professor and Director of the State Key Laboratory of Deep Rock Mechanics and Underground Engineering. Leads IEC's SIOT collaboration in intelligent monitoring.

Paolo Gardoni

Board Director

Chair Professor at UIUC and Director of the MAE Center. Expert in structural reliability, multi-hazard risk and infrastructure resilience.

Chen Yiyan

Board Director

Professor, Senior Engineer and National Engineering Design Master. Expert in steel-concrete composite bridges and major municipal design leadership.

Wang Shaohua

Board Director

Professor and doctoral supervisor at Southwest Jiaotong University, with Tsinghua training in mechanical engineering. Focuses on bridge connection components and reliability.

Chen Lie

Board Director

Professor, Senior Engineer and Sichuan Engineering Design Master. Former Deputy Chief Engineer of China Railway 2nd Design Institute, specializing in HSR bridges and seismic isolation.

Long Yue

Board Director

Professor, Senior Engineer and senior expert in prestressing and structural cable systems. Former chief engineer and national technology center director in anchorage systems.

Board Chairs

TG Wu

Chair Emeritus

B.S. in Metal Processing, Chongqing University. Former technical leader in China's Ministry of Transport bridge-component manufacturing system, with deep expertise in expansion joints and product R&D.

Darcy Wu

Board Chair

Ph.D. candidate in Engineering Mechanics, with an MSc from Warwick and BSc from CQU. Chair of IABSE TG 6.8, Assistant Director of IABEE, and inventor of TWINSA. Leads product architecture, automation logic and international technical communication.

Core Technical Team

Bridge, structural, mechanical, materials, AI and IoT specialists — focused on R&D, standards, product development and engineering delivery

Bridge Structural Engineering

Wang Jianming

Tech/R&D Mgmt

Engineering Ph.D.; R&D, standards, project delivery and award-winning technical development.

Liu Yang

Tech Dev

Tongji bridge engineering graduate; CCCC design and international division experience, with technology-transfer work.

Zhao Weichao

Tech Dev

SWJTU hydraulic and soil engineering background; overseas engineering and long-term bridge technology development.

Structural Mechanics

Liang Jiayong

Research Mgmt

Sichuan University engineering mechanics background; bridge and building technical design experience.

Building Structural Engineering

Liang Xin

Tech Dev

Cambridge structural mechanics Ph.D.; landmark steel structures and super high-rise design experience.

Meng Xianliang

Seismic System

Former MIDAS China technical manager and chief engineer; strong in structural analysis and finite elements.

Zhang Xing

Seismic Design

Former design director; standards, seismic isolation and energy dissipation design for irregular structures.

Inorganic Materials

Han Xin

Materials Tech

South China University of Technology materials background; nonmetallic materials, process design and component applications.

Artificial Intelligence

Xu Yun

Digital Twin

Computer science specialist with Siemens, Nokia, CSDN and Jaxon experience; AI, smart devices and cloud platforms.

IoT & Control Systems

Henry Ren

IoT & Software

UESTC automatic control MSc; former IBM software engineer and international project manager.

Darcy Wu

Automation Ctrl

Metals Materials

TG Wu

Metal Proc.

Polymer Materials

Pu Yi

Rubber R&D

Polymer material specialist focused on rubber and polyurethane materials for engineering components.

Mechanical Engineering

John Chow

Load-Bearing

Mechanical engineer with 20+ years in rail transit, mechanical design and manufacturing.

Li Xiong

Expansion Joints

SWJTU mechanical engineering background; patented technical support for HZMB and Sichuan-Tibet Railway projects.

Hu Meng

Intl Tech Dev

Mechanical engineer familiar with international standards; technical consulting for landmark international projects.

Liu Naigang

Intl Tech Dev

Mechatronics background with 10+ years in bridge-component applications, project management and technical support.

Mechanical, Design & Manufacturing

Wang Shaolin

Product Design

Mechanical design engineer focused on engineering product design and technical management.

Lin Yuquan

Mfg Tech

Mechanical engineer focused on engineering product design and technical support.

Tu Chengjin

Mfg Mgmt

Mechanical engineer experienced in structural design, process development and production management.

Jiang Mingfa

QSHM

Mechanical engineer with 30+ years of on-site manufacturing process experience.

Significant Growth

Strong Collaboration with Leading Research Institutions and Top Scientists

We maintain close collaboration with the State Key Laboratory of Deep Geomechanics and have co-founded the Smart IoT Research Center (SIOT Center) to drive innovation in structural monitoring and IoT systems.

He Mancao, head of SIOT center, is a renowned scientist in Rock Mechanics, with a focus on landslide and earthquake prediction, earning global recognition. He serves as the Vice President of the International Society for Rock Mechanics and Rock Engineering (ISRM) and is an Academicianof the Chinese Academy of Sciences. As a mentor to Darcy, the President of IEC, He Mancao guides R&D projects at the SIOT center, particularly in the area of cable newton force measurement, providing reliable data for landslide predictions.

Our research center also collaborates with leading scientists from various disciplines, these experts contribute on a part-time and project basis, some being on board of directors, fostering strong interdisciplinary collaboration.

We are engaging technology cooperations also with leading universities worldwide, Research center to be established worldwide for further explorations of our core technology.

Strong Investment in R&D

We invest over 7% of our revenue into research and development. By 2024, we have contributed to the publication of 6 SCI-indexed papers, hold 152 patents, and have played a key role in the development of 4 national-level standards.

IEC and Academician He Manchao from the Chinese Academy of Engineering have jointly established the Intelligent Monitoring and Control Technology Research Center at the State Key Laboratory of Deep Geotechnical Mechanics and Underground Engineering.

IEC's In-House Compression-Shear Testing Machine with 30000kN and 5000kN Vertical Load Capacity and 15% Horizontal Load Capability respectively

Significant Growth

Since our inception in 2016, we have consistently maintained an annual growth rate exceeding 40%. By 2023, our revenue surpassed $42 million USD, driven by growth in our TWINSA technology and innovative products. Today, we proudly have over 300 professionals across 12 locations in China, Australia, and Singapore.

IEC's In-House Compression-Shear Testing Machine with 30000kN and 5000kN Vertical Load Capacity and 15% Horizontal Load Capability respectively

Management

The management team and staff at IEC embody professionalism, energy, and a customer-oriented approach that drives our company forward. Each member contributes unique expertise and passion, making them invaluable assets to IEC’s growth and success. Their dedication to understanding and meeting client needs, combined with a commitment to excellence, ensures that IEC consistently delivers high-quality solutions. Together, their collaborative spirit and focus on customer satisfaction empower IEC to continually expand its capabilities and uphold its reputation in the industry.

Bo Jing

General Manager

Bo holds an MBA from City University Malaysia and has 20 years of management experience, including 10 years in quality assurance (QA) roles. He brings extensive expertise in quality systems (QS) compliance.

Shaolin Wang

Director
International operations

Shaolin has both an MBA and a BA in International Trade. He possesses 20+ years of experience in international business development. In addition to overseeing quality compliance with international standards, Shaolin has also served as the CEO of IEC Singapore.

Shirely Chen

Director
Logistics and Supply Chain

Shirley brings over 15 years of expertise in logistics and operations, demonstrating a proven track record of optimizing supply chain processes, improving efficiency, and ensuring smooth operational management across various industries

Alex Hao

Director
Accounting

Alex holds an MBA and brings a wealth of experience in finance and accounting. Prior to joining IEC, he worked extensively with European companies and has a strong understanding of both European and American accounting standards.

Facility

IEC’s manufacturing facilities, spanning a vast area of 36,000 square meters, are equipped with advanced machinery and technology, enabling us to produce top-quality products with precision and efficiency. Our facilities feature laser-cutting machines for intricate metal fabrication, a 5-meter diameter lathe for large-scale machining, and 3,500-ton vulcanizing machines for robust rubber processing. We also maintain an extensive rubber mixing line to ensure material consistency and quality.

Assembly for Load-Measuring Bearings

IEC Workshop's Ultra-Large Lathe (5m Diameter)

Quality Assurance

IEC upholds rigorous quality control standards across all aspects of its manufacturing and testing processes, ensuring that every product meets international benchmarks for excellence. Our structural bearings and seismic devices are CE certified, attesting to their compliance with European quality and safety standards. Additionally, IEC’s modular expansion joints and rubber bearings have successfully passed AASHTO testing, confirming their resilience and durability for demanding applications.

IEC's in-house, CNAS-accredited laboratory, recognized internationally through the ILAC Mutual Recognition Arrangement (MRA), ensures that our test reports are accepted on par with those from NATA-accredited laboratories in Australia. Our state-of-the-art facilities conduct rigorous testing on structural bearings, rubber compounds, and steel raw materials to meet stringent performance and durability standards. IEC’s commitment to quality is reinforced by ISO 9001 certification for quality management and ISO 17025 accreditation, demonstrating our dedication to delivering reliable, high-performance solutions with consistency and precision

ISO 9001:2018,

Quality Management

System
ISO 14001:2015,

Environmental Mangaement

System
ISO 45001:2018,

Health and

Safety Management

System
ISO 17025:2017,

Compentence of

Testing and

Calibration Laboratories
AASHTO Test Report

(Rubber Bearing)
AASHTO Test Report

(Modular Joint)
EN ISO Welder

Qualification Certificate
CE Certificate

(Spherical Bearing)

Product Lines

Expansion Joints

Our expertise in expansion joints combines innovation, high standards, and global experience. Focused on quality and adaptability, we deliver solutions for the toughest infrastructure challenges. Key strengths include:

• Technical Expertise: experience of high-displacement modular and finger joints with 1600mm movement capacity, supported by 20+ patents.

• Global Reach: Proven global reach, with extensive annual supply of joint systems to the UK, and successful delivery of 20+ projects world wide, including Qatar World Cup infrastructure and HZM, the world's most expensive Bridge.

• Standards Leadership and conformity: Primary drafter of national standards, delivering comprehensive mainstream solutions with full AASHTO conformity and third-party certifications, including OMV, SPO, and fatigue tests.

• Innovation: Patented technology offering enhanced precision, cost-efficiency, and structural resilience.

Joints Type	Specifications	IEC Expertise & Highlights
Modular Joints	EOTA EAD 120113-00-0107,AASHTO LRFD 14.5, CD357(BS)	Supplied and installed over 40,000 linear metersin signature projects,including the iconic Hong Kong- Zhuhai-Macao Bridge,the world’s most expensive bridge. These joints have achieved ultra-displacement ca pacities up to 1600 mm. Over 50,000 linear meters installed in the UK, with AASHTO-compliant performance tests.
Cantilever Finger Joints	EOTA EAD 120111-00-0107, CD357(BS), JT/T 1270.3(CHN)	Supplied and insta lled over 50,000 linear meters with movement ranges from 40-320 mm. IEC was the chief author of JT/T 1270.3,China’s national standard for cantilever joints.
Supported Finger Joints	EAD 120112-00-0107, CD357(BS)	Extensive experience in designing and installing innovative rotationalfinger joints with movement capacities up to 1600 mm.
Mat Joints	EAD 120110-00-0107, CD357(BS)	Patented technology offering excellent noise reductionand smooth ride-through performance.
Flexible PlugJoints	CD357(BS)	Experienced in Elastic PolyurethaneJointPUand approved in Hongkong Highway Department
Nosing Joints	EOTA EAD 120109-00-0107, CD357(BS)	Primarilyused in building projects with limited application in bridge applications.
Non- Standard	IEC proprietary	SwiftLink Finger Joints:Enables pre-embedding and quick connection of components,boosting installation efficiencywith over 10,000 LM insta lled. Seismic Cable Joints: A cable restraint system integrated into joints, allowing thermal movements while limiting seismic displacements.

Bearings

Our bearings meet the highest standards for performance and reliability, suited for diverse infrastructure needs. Designed for durability, easy maintenance, and adherence to international standards. Key strengths include:

• Proven Track Record: Extensive experience in both bridge and building projects.

• Standards Compliance: Comprehensive coverage of key international standards, with CE certification for major categories.

• Capacity and Reliability: Providing high-capacity, reliable solutions, including spherical bearings up to 100MN, pot bearings up to 90MN, and holding the world record for the largest rubber bearings(2.5m by 2.5m).

• Innovation: Innovative features tailored for specific structural challenges.

Bearing Type	Specifications	IEC Expertise & Highlights
Elastomeric Bearings	EN 1337-3, AASHTO LRFD14.7.5	Industry-leading capability; developed world's largest rubber bearings(2.5m x 2.5m),CE certified.
Pot Bearings	EN 1337-5, AASHTO LRFD14.7.4	Proven track record;successfully implemented bearings with 90MN capacity. CE certified.
Spherical and Cylindrical Bearings	EN 1337-7， AASHTO LRFD14.7.2 (PTF Sliding Surfaces)	Advanced technical proficiency; delivered bearings with a 100MN capacity and proprietary high-performance sliding material. CE certified.
Guide and Restraint Bearings	EN 1337-8	Innovative design portfolio, specializing in wind- resistant bearings.
Rocker and Roller Bearings	EN 1337-6	Extensive experiene with rocker bearings in rail bridge applications.Limited use of roller bearings due to less frequent specification in moden bridge designs.
Non-Standard Bearings	EN 1337-4	Wind-resistant Bearing:Resists wind loads and horizontal forces while allowing thermal movement. Tension-Compression Bearing: Handles both tensile and compressive forces, ideal for uplift resistance and multi-directional support. Self-aligning Slope Bearing: Adjusts to deck slope changes with spherical rotation ensuring even load distribution for longer lifespan.

Seismic Devices

Our seismic isolators ensure unmatched stability and performance under extreme conditions, safeguarding critical infrastructure. Supported by a dedicated seismic analysis PHD team, we develop solutions that meet international standards. Key highlights:

• Proven Performance: Successfully implemented in iconic projects like SoFi Stadium (US) and the ST-HSR (China).

• Innovative Solutions: leverage diverse engineering principles and deep structural understanding, enabling tailored designs that suit unique structrual requirements.

• Global Standards Compliance:Fully aligned with EN and AASHTO, ensuring reliability across diverse projects.

Category	Specifications	IEC Expertise & Highlights
Rubber Isolators: Lead Rubber Bearingsand High Damping Rubber Bearings	EN 15129: 8.2.1, AASHTO LRFD S14	Extensive design and implementation expertiseProven track record with UltraHDR,achieving a 22% damping ratio, 450% horizontal deformation,and a maximumdiameter of1600mm.
Sliding Isolators: Friction Pendulum Systemsand Sliding bearings	EN 15129:8.3, AASHTO LRFD:14.7	Delivered Ultra Ca pacity PB bearings with a capacity of140MN. Innovative design offering distinct transverse and longitudinal stiffness.Vast implementation experience,including supplying 6,000 units of sliding bearings for the SoFi Stadium in Los Angeles, the world's most expensive building.
Dissipator: Viscous Dampersand Metalic Dampers	EN15129:7, AASHTO LRFD:15	Expertise in delivering viscous dampers with up to3500kN capacity and patented overload protection systems. Extensive experience with metallic dampers, particularly in high-speed railway(HSR) bridges, including the $46 billion ST-HSR project in China,one of the world’s most expensive rail projects.
ShockTransmission Units(STUS)	EN 15129:7.6， AASHTO LRFD:15	Expertise in bridges and buildings, with patented integration into bearing systems for enhanced performance.
Displacement Restraint Devices	EN 15129:6， AASHTO LRFD:15.2	Extensive experience with patented technologies; authorednationalstandards.Supplied Cable Restrained Bearings with ca pacities of up to 100MN.
Non-Standard Seismic Devices	IECProprietary	Innovative devices combining spherical bearings and laminated bearings with precise stiffness control. Experience with more than 20 projects involving Cable Restrained Bearings,which have now been upgraded into new standards.

Innovative Engineering Service

Building on our advanced technologies, we provide innovative engineering services that deliver real value.

Bearing Re-manufactunng	Remanufacturing is an approach which focuses onrefurbishing undamaged parts and replacing womcomponentslike friction materials, offering a more cost-effective and eco-friendly alterna tive to full replacementlEC,in collaboration with China's National EngineeringCenter, pioneered the pilot remanufacturing projec onthe Sutong Bridge (span at 1088 meters, by then theworld's longest cable-stayed bridge),remanufacturinghundredsof pot andspherical bearings.
Removable Top-of-PierRotation System	Bridge rotation systems allow construction of highwaybridges parallel to railways before rotating them intoposition, minimizing rail traffic disruption.Unlikeconventionalpermanent bottom-of-piermethods, lEC's innovative system allows for postrotation removal of the mechanism,enabling loadtransfer to permanent bearings and reuse in futureprojects. Enhancing efficiency, cost-effectiveness, andsafety.
Structural HealthMonitoring and Beyond	lEC SHM systems provide continuous monitoring ofstructural conditions using state-of-the-art sensors,primarily non-contact types for periodic calibration. OuradvancedTWINSAsystemelevates SHM to an adaptivetwin system, offering deeper insights into structures andenabling adaptive structural optimization and riskmitigatione-a technology we believe represents thefuture of structuralengineering.

Expansion Joints

Bearings