SINNHONG Expands 800V High-Voltage Harness Production in China and Vietnam Bases to Meet 2026 EV Demands

SINNHONG, a leading IATF 16949 certified high-voltage harness manufacturer, today announced the strategic expansion of its production lines across its dual manufacturing bases in China and Vietnam. This move is a direct response to the skyrocketing global demand for 800V high-voltage wiring harnesses optimized for the next generation of ultra-fast charging EV platforms.

Meeting the 800V & Lightweighting Challenge

As the automotive industry pivots toward faster charging and longer range, SINNHONG is at the forefront of interconnect innovation. "Our 2026 roadmap focuses on the 'Efficiency-Safety' nexus," said the Engineering Director at SINNHONG. "By integrating lightweight aluminum high-voltage cables, we are helping our Tier 1 partners achieve significant EV range extension while reducing total vehicle weight—a critical factor for the latest electric SUVs and heavy-duty electric trucks."

Advanced Engineering for Shielding & Safety

Beyond power delivery, the complexity of modern vehicles requires superior signal integrity. SINNHONG’s latest products feature advanced EMI shielded high-voltage wiring, specifically designed to prevent interference with sensitive power electronics and autonomous driving sensors. Furthermore, the company has launched a new series of flame-retardant high-voltage battery cables that meet the rigorous ISO 19642 standards, ensuring maximum safety in high-thermal environments.

A Resilient & Sustainable Supply Chain

With the global trade landscape evolving, SINNHONG’s dual-base strategy in China and Vietnam offers customers a unique advantage:

• SINNHONG China: Focuses on high-capacity wholesale manufacturing and rapid prototyping.

• SINNHONG Vietnam: Provides strategic tariff advantages and supply chain diversification for the North American and European markets.

In alignment with 2026 ESG mandates, SINNHONG is also introducing recycled copper wiring harness solutions. This initiative supports a sustainable EV supply chain, allowing OEMs to source high-performance custom high-voltage busbar and cable assemblies with a significantly lower carbon footprint.

Solutions for Every Platform

From flexible high-voltage orange cables for compact engine bays to dedicated thermal management system wiring harnesses for liquid cooling units, SINNHONG provides a comprehensive catalog for multi-voltage platforms.

For technical inquiries or to schedule a factory audit at our China or Vietnam facilities, please visit our official website or contact our sales engineering team directly.