Suzhou Sinemax Electronics Technology Co., Ltd. specializes in R&D, manufacturing and sales of automotive and off - grid inverters. Leveraging our expertise in vehicle power supply and “China + Thailand Manufacturing” model, we offer innovative vehicle power solutions globally.
Our main products include 12V/24V 400W - 6000W automotive and off - grid inverters, and 100W - 1000W lithium - battery inverters, covering modified and pure sine - wave series. All products are CE, ETL and ROHS certified, and applicable to automotive power supply, off - grid PV systems, outdoor tools, RVs and households.
We provide professional OEM & ODM customization services, from research to product customization. Thanks to the China - Thailand dual - manufacturing model, we help partners gain competitive edges in global markets.
Our off-grid inverters are engineered to high efficience. We select high-quality core components from globally renowned brands to ensure outstanding basic performance and long service life.
Advanced heat dissipation structures and materials are adopted to achieve efficient thermal management, ensuring stable operation even under high-temperature and high-load conditions and extending the lifespan of key components.
Sturdy and reliable structure: The shell is made of high-strength and corrosion-resistant aluminum alloy.Precision circuit design: The engineering team meticulously optimizes the circuit layout and design to reduce energy loss, enhance the overall power generation of the system, and at the same time ensure operational stability and anti-interference capability.
• Design: 10+ year engineering team handles schematics to prototypes • Production: Flexible customization ability with 50MOQs with private label option • Compliance: Pre-certified for CE/ETL/RoHS global markets • Quality: Fully tested units before delivery
• Support: 1:1 project management from concept to delivery
Our History
2025
2024
2023
2022
2021
OEM customized product orders are exported to more than a dozen countries in Europe and America.
We have secured OEM orders from over a dozen countries across North America, Australia, and Europe, working closely with partners to deliver premium clean energy solutions for homes and outdoor living.
Technical breakthrough
Achieved a major tech breakthrough, enhancing inverter efficiency significantly，Hospital-Grade Clean Energy.
China-Thailand Dual Manufacturings Was Launched
China-Thailand Dual Manufacturing expands production capacity to meet growing market demands and strengthen competitive advantage.
The First Pure sine wave inverter Product Was Launched
Unveiled the initial Pure sine wave inverter product, gaining market recognition for its quality.
The Company Was Sstablished
SineMax was established, setting the stage for its journey in the off-grid inverter industry.
Awarded multiple international certifications and patents.
Our certified OEM power solutions deliver high-efficiency off-grid inverters, solar energy systems, and custom 12V/24V power supplies
backed by ISO 9001, CE, ETL and ROHS global certifications for reliable B2B applications.
invention certificate
ETL certification
ROHS certification
CE Certefication
invention certificate
ETL certification
ROHS certification
CE Certefication
TESTIMONIALS
WHAT OUR CLIENTS SAY
“Their off grid pure sine power inverter compiance with (UL458)on first try. The dual China-Thailand production let us scale from 500 to 5,000 units/month without quality dips. More than a vendor – a power partner.”
Jack Wilson-CEO Energy Solutions26 March, 2025
“Ordered 8,000 custom 3000W inverters with our branding and 50°C thermal specs. Sinemax’s Thailand factory delivered zero defects while cutting lead times by 40%. Finally, an Asian supplier that understands ‘rush’ means yesterday!”
Brian Murdoch– Supply Chain Director 11 December, 2024
”Initially, concerns existed about Chinese factories' communication efficiency, but Sinemax's team addressed them with English - fluent engineers and daily production photos. When the first batch of 2,000 12V 3000W inverters arrived, three had scratched casings. They swiftly air - freighted replacements within 72 hours - faster than our local suppliers.“ Richard Smith-Outback Mining Tech09May, 2025
Add: Building No.3, Liu Fang Science Park, No.1 Fuda Road, Suzhou Industrial Park, Jiangsu, China contact: kelly Tel: 0512-62797076 Email: sales@sinemax.cn
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