About Us

ZHEJIANG TONGZHENG ELECTRIC.,LTD.

Guided by quality and innovation, we provide customers with high-quality new energy products.
We aspire to become a global leader in the new energy control and protection systems industry.

Zhejiang Tongzheng Electric Co., Ltd. was founded in 2002.

The company specializes in manufacturing MCB, MCCB, RCCB, RCBO, SPD, ATS, MTS, over- and under-voltage protectors, isolating switches, Wi-Fi smart products, photovoltaic DC products, digital display meters, switching power supplies, and other products.

The company adheres to the business philosophy of “Customer First, Quality First,” providing customers with the highest quality products and services.

Our Services

Pre-Sales Support

Zhejiang Tongzheng Electric Co., Ltd. integrates a product matrix of over 200 categories (circuit breakers, dual power switches, surge protectors, etc.), combined with ISO9001 quality management system and CNAS-certified laboratory support, to achieve standardized, intelligent, and customized pre-sales services.
Needs Analysis: On-site assessment within 72 hours + competitive benchmarking
Smart Solutions: Customized designs (1 main + N backup plans) in 3 days
Bid Support: 78% win rate (vs. 55% industry average) + live expert guidance
Training: 80+ annual sessions (product technology, maintenance, design)
Digital Tools: VR simulations, real-time project tracking, auto-configuration

After-Sales Support

Zhejiang Tongzheng Electric provides efficient and reliable after-sales support to over 100,000 customers worldwide with a "2-hour response, 24-hour closed-loop" service standard. The company strictly adheres to the ISO9001 quality management system and is supported by a CNAS-accredited laboratory to ensure standardized and professional after-sales service.
Rapid Response: 2h hotline reply, 48h on-site service (72h remote areas)
Extended Warranty: 2-year coverage (vs 1-year industry standard), optional 3-5-year extensions
Smart Maintenance: IoT remote monitoring & 92% accurate failure prediction
Client Care: Dedicated managers + annual safety inspections for key accounts

Logistics Support

Fast Shipping: 72h to US/EU, 48h to SEA (98% on-time rate)
Specialized Transport: Battery-certified air freight, shock-proof packaging (<0.1% damage)
Smart Customs: AEO-certified, 12h EU/US clearance (vs 24h avg)
Real-Time Tracking: IoT sensors monitor temp/humidity, GPS precision ±5 m.
Full Compliance: CE/UL pre-check, tax-error coverage (PICC insured)
Project Logistics: Bilingual managers and backup routes for critical shipments
Eco-Friendly: 30% EV fleet, 90% recyclable packaging
Damage Protection: Free replacements within 24h

Why Choose Us

Zhejiang Tongzheng Electric Co., Ltd. always controls the entire process of production, inspection, and testing with strict standards to ensure reliable product quality

Raw Material Inspection

Verify purchased electrical components and materials for specs, certificates, and performance to prevent defects in production.

Finished Product Testing

Test products post-production for electrical performance, mechanical integrity, and environmental compliance to meet standards.

Production Process Control

Key processes like assembly, welding, and debugging have quality checkpoints. Operators self-inspect while quality teams patrol to correct deviations and ensure compliance.