Nanjing Yihua Technology Co., Ltd.

Nanjing Yihua Technology Co., Ltd. is a professional integrated R&D and manufacturing factory specializing in photovoltaic DC protection & surge protection electrical components, rooted in Nanjing, Jiangsu Province, China with superior logistics and supply chain advantages.

We focus on the full-chain independent production of SPD surge protective devices, PV DC circuit breakers, DC fuses & fuse holders, MC4 solar connectors, PV combiner boxes, and complete lightning protection solutions for new energy photovoltaic, energy storage, industrial power distribution and commercial electrical systems. As a genuine source manufacturer, we own standardized automated production workshops, professional internal testing laboratories, and a mature technical R&D team with years of deep experience in low-voltage overvoltage protection field.

Comprehensive Global Certifications & Standard Compliance

Quality and global market accessibility are our core competitive strengths. Our entire product portfolio has passed a full range of authoritative international third-party certifications, fully compliant with global mainstream industry standards:

• System certification: ISO9001 Quality Management System, ISO14001 Environmental Management System

• Product safety certification: CE (LVD/EMC), TUV, CB, IEC 61643-11 / IEC 61643-31 photovoltaic SPD standard, EN 50539, SGS, RoHS

All testing and certification procedures are completed via recognized global certification bodies, eliminating market access barriers for clients exporting to Europe, Southeast Asia, Middle East, Australia and other regions.

Manufacturing & Quality Control Strength

We implement full-process closed-loop quality management from raw material incoming inspection, semi-finished assembly, offline aging testing to finished product 100% full inspection before shipment. Equipped with automated assembly lines, lightning impulse test equipment, high-low temperature aging chambers and precision electrical performance testers, we strictly control product stability, safety and service life to meet long-term outdoor PV project operation demands.

We support standardized bulk supply, OEM & ODM customized development, private label service, flexible MOQ arrangement and fast sample delivery. Our products have been widely recognized by distributors, EPC contractors, electrical wholesalers and system integrators across over 40 countries worldwide.

Our Commitment

Adhering to the tenet of "Reliable Protection, Certified Quality, Factory Direct Supply", we provide one-stop technical consultation, product matching, certification document support and after-sales service for global partners. We sincerely welcome customers worldwide to conduct factory audits, technical negotiations and long-term win-win cooperation.