About Us
Your Power Distribution & Terminal Block Partner
China·Haiyan Terminal Blocks Co., Ltd. is a factory-direct manufacturer with 25+ years’ experience supplying terminal blocks, distribution blocks, junction boxes, and wire connectors. We help energy, industrial, and construction projects run safely and efficiently.
With more than 130 product series and over 2,300 specifications, our flame-retardant, heat-resistant, and impact-proof components ensure stable connections and accurate metering. We support mixed-model orders, OEM/ODM customization, and flexible packaging to meet your project needs.
All products comply with IEC, CQC, and CE standards, produced under ISO9001, ISO14001, and ISO45001 systems. Haiyan holds 35 utility model patents, showcasing our dedication to quality, innovation, and continuous improvement.
Our team of 500+ engineers and skilled technicians delivers fast responses, reliable support, and tailored solutions for clients worldwide.
Partner with Haiyan to secure dependable, high-performance electrical components. Contact us today to explore custom solutions and streamline your projects.
Mr. Nan
CEO Manager
We’re here to ensure that our customers thrive with every connection we make.
Power Your Projects Safely
With 25+ years of experience, Haiyan delivers reliable terminal blocks and distribution components, helping your team save time, avoid errors, and complete projects confidently. Request your solution now.
What Inspires Us
Our Story
Our Professional Teams
Supported by 70+ senior engineers and 500+ staff, our modern team ensures high-quality, innovative terminal & distribution blocks for projects worldwide.
R&D Team
With 70+ senior engineers and 35+ utility patents, our R&D team develops at least 5 new products yearly, creating innovative, durable connection solutions tailored to your drawings, materials, and application needs.
Inspection Team
Equipped with halogen testers, tensile machines, and full ISO-certified procedures, our inspection team verifies safety, compliance, and performance, ensuring every terminal block and junction box meets global standards.
Production Team
Backed by 500+ skilled workers and advanced automated lines, our production team ensures consistent quality and timely delivery, handling high-volume orders and mixed-model requirements with precision and efficiency.
Sales Team
Our sales team delivers fast, accurate support with 24-hour responses. With deep product knowledge across 130+ series and 2,300 specifications, they guide you to the right solutions for every project worldwide.
Who Trusts Haiyan for Safe and Efficient Electrical Systems
We partner with EPC contractors and distributors across Europe, Southeast Asia, the Middle East, and other international markets. Our certified distribution blocks and terminal solutions support major electrical infrastructure and new-energy installations worldwide.
Our Global Exhibition Presence
Our commitment to international markets is confirmed by our presence at top electrical and energy exhibitions. These events provided essential platforms for discussing compliance standards, exhibiting metering junction boxes and customized new energy terminal solutions., and expanding our partner network.
Shanghai, China | June 1-3, 2025
SNEC PV & Energy Storage 2025
SNEC PV & ES 2025 – The 18th International Photovoltaic Power Generation & Smart Energy Conference & Exhibition
Shanghai, China | October 10–12, 2025
SNEC Energy Storage Expo 2025
SNEC ES+ 2025 – The 11th International Energy Storage and Battery Technology & Equipment Conference and Exhibition
Jinan, China | March 27, 2025
China Electrical Equipment Matchmaking 2025
2025 China Complete Electrical Equipment Procurement & Supply Chain Matchmaking Conference
Yueqing, China, February 26, 2026
China Electrical Appliance Culture Festival
THE 25TH CHINA ELECTRICAL APPLIANCES CULTURAL FESTIVAL AND ELECTRICAL PRODUCTS EXPO