20 Years of Focus on Manufacturing of Solar Combiner Boxes, Providing High-Quality, Customized Solutions for Global Customers.
At LETOP Solar, we make experts in photovoltaic circuit protection and power management solutions.
We specialize in high-performance solar combiner boxes, DC components, and PV system accessories. With 20 years of expertise in solar electrical engineering, we are committed to delivering reliable, customized combiner box solutions for utility-scale solar farms, commercial installations, and residential PV systems worldwide.
Our team is working hard to improve every aspect of combiner box design. From IP65-rated enclosures designed to withstand extreme weather conditions to smart monitoring systems with RS485 communication capabilities.
We’ve established a dedicated PV testing laboratory with 30 specialized testing devices that perform 24 rigorous quality checks on every unit, including arc fault detection simulations and thermal endurance tests under -40°C to 85°C conditions.
With 16 production lines in our 22,000 square meter facility, we maintain high manufacturing efficiency and fully test our products to keep our defect rate below the industry-leading 1% benchmark.
To provide our global customers with safe, reliable, and efficient solar combiner box products and solutions, contributing to the development of clean energy.
To become a global leading manufacturer of solar combiner boxes, contributing to the sustainable development of the solar industry.
At LETOP, we take pride in our highly skilled team of 100+ professionals who form the backbone of our success. With an average industry experience of 10+ years, our team combines deep technical expertise with a passion for renewable energy solutions.
We offers circuit control devices, including time switches, timer relays, relays, contactors, and more. With over 20 years of experience, we provide high-quality product customization and development services for clients worldwide.
We are manufacturing experts for circuit control and protection devices, including time switches, timer relays, relays, contactors and much more. With 20 years of extensive know-how and professional technology, Letop has been committed to providing high-quality product customization and development services for various brands.
We work hard and innovate every day to pursue higher quality product structures and production methods. We have established an internal laboratory and independently developed various testing equipment to ensure consistent product quality.
At Letop, we prioritize efficiency and quality in our production processes. With 16 production lines dedicated to manufacturing, we guarantee high-quality and efficient production capabilities. Our in-house R&D lab has over 30 top-performing test devices and conducts over 24 test items, including comprehensive product performance tests. We implement 100% final testing and maintain strict control of defective products within 1%.
LETOP is great at quality, environment, and employee care, delivering top-tier products and services. Our ISO 9001 quality system ensures customer satisfaction, and our ISO 14001 and ISO 45001 certifications show our commitment to sustainability and employee safety. LETOP not only offers quality products, but also a model for environmental protection, safety, and corporate social responsibility. We look forward to working with you to create a better future.
ISO 9001:2015
ISO 14001:2015
ISO 45001:2018
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