Clean World, Better Life
Why choose us
Technical Strength
Solid foundation in solar thermal technology and integrated industry chain advantages
Strategic Layout
Forward-looking synergistic strategy integrating "Solar + Storage + Heat Pumps"
Brand & Channel
Strong brand influence and global distribution network
Quality & Certification
Superior product quality backed by internationally recognized certifications
Policy Alignment
Strategically aligned with national "Dual Carbon" goals, capitalizing on policy incentives
Zero-Carbon House
Sunrain is the first Chinese provider to independently deliver a comprehensive zero-carbon home solution, establishing ourselves as an industry leader. By integrating energy storage systems and air-to-water heat pumps, we significantly reduce household electricity costs. If you are a property developer looking to implement zero-carbon technology across your projects, we invite you to get in touch.
All-in-One Solution, Industry Pioneer
Saves Significant Electricity Costs
We deliver self-sufficient, low-cost green living.
Reliable storage to cut business costs and protect the planet.
C&I Energy Storage
Despite intensifying competition in the energy storage market, we remain committed to our founding principles: producing high-quality products with superior battery cells and components. We aim for steady growth and long-term partnerships with every client. C&L Energy Storage helps conserve the Earth’s resources, lower production costs for large factories, and bring electricity to underserved communities.
Premium Cells, Superior Reliability
Stable Growth, Long-Term Partnership
Solar Thermal Project
Sunrain is globally recognized as a leader in solar water heating, with a reputation built on quality. Through the large-scale application of heat pipe and flat plate collectors, we provide cost-free hot water for a wide range of settings—including mining sites, hospitals, airports, schools, and more.
Globally Recognized, Quality Leader
Free Hot Water for Diverse Sites
Near-zero-cost hot water for various commercial and public facilities.
Partner with a Pioneer
Frequently Asked Questions
If you would like to learn more, please contact us.从
Are you a manufacturer or a trading company? What is your production capacity and quality control like?
We are a professional manufacturer with our own factory. Our production capacity is robust and scalable, readily meeting market demands. We can flexibly increase output or arrange emergency production runs to fulfill large orders or respond to urgent client requirements.
Our commitment to quality is underpinned by a multi-layered control system:
Advanced R&D & Testing: We operate state-of-the-art laboratories that exceeds industry standards.
Rigorous Pre-Production Testing: All new products undergo multiple rounds of stringent laboratory tests before being approved for production.
In-Line Production Checks: Critical components are tested at various stages of the assembly process.
Continuous Improvement: We consistently refine our products and develop new solutions based on customer feedback and market trends.
What types of cooperation do you offer?
We offer flexible partnership models tailored to your business needs:
OEM/ODM Services: If you have your own brand or are planning to build one, we are your ideal manufacturing partner. We provide comprehensive OEM and ODM services and have a proven track record of collaborating with renowned global brands.
Bulk Solutions for Property Developers: For real estate developers looking to integrate uniform, sustainable solutions like air-to-water heat pumps or energy storage systems into multiple properties to enhance energy efficiency and increase property value, we are the optimal choice. Please fill out our information form, and we will provide a complete package solution.
Project-Based Solutions for Large-Scale Projects: If you are involved in commercial & industrial energy storage projects or large-scale solar thermal projects, please complete our information form. Our experts will provide you with a professional system design and a competitive quote.
What is the warranty period for your products?
We stand behind the quality of our products with the following standard warranty terms:
Air-to-Water Heat Pump:
Residential Units: 2 years for the whole unit, 3 years for key components including the compressor.
Commercial Units: 1 year for the whole unit, 2 years for the compressor.
Energy Storage System:
Select products: 5 years standard warranty.
Solar Water Heater System:
Heat Pipe Collector: 5 years.
Flat Plate Collector: 3 years.
Note: Extended warranty periods are negotiable. Please contact us for details.
How do you provide after-sales service and support?
Our service model is designed to ensure long-term product performance and customer satisfaction, tailored to the partnership type:
For OEM/ODM Partners & Distributors (Heat Pumps & Energy storage systems): As the brand owner or distributor, you will be responsible for frontline after-sales service. To support you, we strongly recommend stocking a small inventory of common spare parts for urgent repairs. We provide comprehensive remote technical guidance and can offer on-site training during our regular market visits.
For Energy Storage System Distributors: We expect our distributors to manage local after-sales support. We back you up with remote troubleshooting and expert training.
For Large-Scale Projects (C&I Energy Storage & Solar Thermal): For major installations, we can dispatch our technical engineers to the site for installation guidance, commissioning, and debugging support.