20+ Years of Solar Manufacturing
Proven manufacturing experience since 2006
Flexible OEM & Custom Solutions
Built around your brand, market and project needs
R&D & Project
Support
Technical support from design to delivery
One-Stop Solar
Sourcing
Collectors, tanks and complete systems from one source
We Are Trusted Solar Thermal Manufacturer
Millionsun Solar has focused on solar thermal energy since 2006 and is a high-tech enterprise integrating R&D, full-process production, sales and professional technical service.
Our factory covers a total area of 8, 000㎡, with more than 80 professional employees and 6 fully automatic production lines. We supply full series solar thermal products with OEM/ODM service, custom solutions and private-label branding for our partners.
Find What Fits Your Business
I am a Distributor / Wholesaler
Quick response to ship the flat plate solar collectors and related solar water heater products to your desination. Consistent quality, competitive pricing, reliable lead times.
I Need OEM / ODM
Your brand, your specs —our factory. From absorber size and coating type to packaging and labeling, we build it your way.
I Have a Project
Need custom specifications, bulk pricing, or professional technical support? Our engineering team speaks your language.
I Am a Local Manufacturer
We supply absorber sheets, KD collector parts, and technical support to improve consistency and local production.
Our Product Range
Flat Plate Solar Collector
Our best-selling product — trusted across Europe, America, and Australia.
Solar Water Tank
Food-grade SUS304 OR 316L stainless steel inner tank, optional outer casing.
Flat Plate Solar Water Heater
We have the full-process production for flat plate solar water heater.
PV Solar Water Heater
Uses solar panels to heat water — no gas, no grid, no pipe line needed
CKD Key Component
We supply CKD key component for flat plate solar collector, water tank, bracket and related products for your local production.
Why Millionsun Solar?
20+ Years Solar Manufacturing Expertise
Two decades of solid solar thermal manufacturing experience, delivering dependable products to global partners.
Flexible OEM & Custom Solutions
We offer OEM & ODM services. Customize sizes, configurations and packaging for your local market.
R&D & Project Technical Support
Our engineering team provides technical support for product co-development and project customization.
One-Stop Sourcing
Source full solar hot water systems and all accessories in one place to simplify procurement.
Experienced Business Team
Our skilled team ensures quick response, smooth communication and reliable after-sales service.
Our Certification
Tested by leading domestic and global laboratories. Every product meets strict industry standards, empowering you with trustworthy, market-ready solutions.
What We Offer — From Production
to Partnership
Production Process — 100% Traceable
Absorber coating → Welding (ultrasonic or laser)
→ Auto punching → Copper tube welding
→ 100% pressure test (every single unit)
→ Auto frame assembly → Glass cover assembly
→ Serial number assigned → Final inspection → Packaging
Stainless steel plate cutting & rolling → Inner tank TIG welding
→ Heat exchanger coil welding → Nozzle hole punching & fitting welding
→ 100% hydrostatic pressure test (each tank) → Outer shell forming
→ Polyurethane integral foaming insulation → Electrical element assembly
→ Final tightness inspection → Unique serial number marking
→ Overall finished inspection → Packaging
OEM/ODM Service
- Specification customization — collector or tank size, materials, color, regional climate adaptability, residential or commercial application, etc.
- Branding — your logo, your label, your packaging design
- Flexible MOQ — from trial orders to container loads
- Confidentiality — your design and specs stay yours
After-Sales Service
- Spare parts support for the full product lifespan
- Responsive communication — we reply within 24 hours
- Dedicated account manager for every OEM partner
- Technical documentation and installation manuals in multiple languages
Trusted by Partners Worldwide
Millionsun has over 20 years of experience in OEM & ODM manufacturing and exporting solar water heating systems. We maintain long-term partnerships with distributors, brands, EPC contractors and installation companies worldwide.
We focus on stable production supply and sustainable cooperation with global partners, providing dependable solar hot water solutions for homes and commercial projects.
Global Business Scale
- 20+ Years Export Experience
- 40+ Countries Served
- 120+ Long-Term OEM Partners
Frequently Asked Questions
We work systematically to integrate corporate responsibility in our core business and make our expertise available for the benefit of the societies where we operate.
What is the minimum order quantity?
We are flexible. For standard flat plate collectors, we accept orders starting from [50/100] units. For OEM/ODM projects, MOQ depends on customization level — contact us for a tailored quote.
Can I get a sample before ordering?
Yes. Sample orders are welcome. We can ship 1–2 units for you to evaluate quality, dimensions, and performance.
What are the typical lead times?
- Standardleadtime: 15–20 days
- OEM/ODM orders: 25–35 days (depending on customization)
Can you customize with my brand?
Absolutely. OEM/ODM is our core business. We customize:
- Brand logo and labeling
- Packaging design
- Absorber coating type(black or blue)
- Size of flat plate solar collecto or solar water tank
- Frame color and profile
- Technical specifications within manufacturing range
How do you ensure quality?
Every collector and water tank goes through:
- 100% pressure test before assembly
- Serial-number tracking from production to shipment
Third-party audits for Keymark, SRCC, CSA, and TUV certification
Ready to Start Your Solar Thermal Project?
Tell us about your requirements. We will get back to you within 24 hours with a tailored proposal.