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Since the establishment of the company, we have always adhered to the concept of technological innovation and firmly believe that this is the cornerstone of the future. We continue to invest heavily in research and development in the fields of split bolt for grounding, 4 0 copper lugs, and copper vs tinned copper lugs, striving to maintain an industry-leading position in technology, equipment and modern management. In order to ensure product quality, we strictly control the production and distribution links. Each product is fully inspected by our advanced production lines and distribution centers before being delivered to customers to prevent defective products from entering the market to ensure maximum customer benefits. Marketing innovation is another important engine for company development. We continue to cultivate brand influence and promote marketing innovation to enhance our competitiveness in the market. At the same time, we are well aware of the significance of social responsibility, integrate it into the corporate development strategy, and make the fulfillment of social responsibility a key task to contribute to social progress. As a dynamic and enterprising enterprise, we are always committed to creating broad space for development. Since its establishment, the company has continued to grow in size and performance has increased year after year, which is inseparable from our unremitting pursuit of innovation. Adhering to the spirit of never being satisfied, we make full use of our own experience and industry trends to continuously improve our design, manufacturing and production capabilities. We believe that through continuous innovation and improvement, we can continue to surpass ourselves and provide customers with better products and services.
FAQ
Do You Provide Customized Services?

Yes, we provide customized services to meet your specific needs. As a professional Electric Power Fittings manufacturer, we offer tailored solutions including custom designs, material selection, sizes, and operational features.

What Is Your R&D Capability?

Our R&D capability is supported by full industry chain management, ensuring control from raw materials to product design and processing. We deliver high-quality Electric Power Fittings Products, and tailored solutions to meet customer needs.

How Is The Quality Of Your Electric Power Fittings?

SUNJ has an ISO9001-certified quality management system and an ISO14001-certified environmental management system! Our products has passed IEC 61238, IEC 61284, NFC 33042 standard certification. Our products deliver consistent performance you can trust.

What Electric Power Fittings Solutions Does Your Company Provide?

SUNJ offers a wide range of solutions, including aerial overhead line fittings, ABC accessories, polymer insulators, lightning Arresters, Drop-out Fuse Cutouts, Disconnect Switch, Auto-iRecloser, SF6 Gas Circuit Breaker. Designed for reliability and performance, our products support power transmission, equipment protection, and grid automation.

Why Choose SUNJ?
Comprehensive Whole-Industry Chain Management
We adhere to a fully traceable industry chain model, managing and monitoring every step from raw materials to final processing. This ensures consistent quality, reliability, and transparency in all our products.
Reliable Power Transmission and Distribution Solutions
At SUNJ, we offer high-performance solutions for power transmission and distribution. Our product range includes Aerial Overhead Line Fittings, ABC Accessories, Polymer Insulators, Lightning Arresters, Fuse Cutouts, Disconnect Switches, Auto-Reclosers, and SF6 Gas Circuit Breakers. Designed for durability and precision, our products ensure efficient power flow, equipment protection, and grid automation.
Strict Quality Control for Superior Electric Power Fittings
At SUNJ, we ensure superior quality management by implementing strict controls across every stage, from material sourcing to final inspection. Strictly following ISO 9001 quality management system and ISO 14001 environmental management system standards, our Electric Power Fittings have unparalleled durability, reliability, and performance.
Trusted Electric Power Fittings Partner
With over 15 years of experience, SUNJ is a global leader in power fittings solutions. Serving 80+ countries with 32+ utility approvals and 800+ successful projects, we ensure ISO 9001 and ISO 14001 certified quality and reliability for every product.
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