Local Manufacturers

KD Components, Technology & Manufacturing Support for Local Solar Thermal Producers

Millionsun supplies absorber sheets, flat plate collector components, and manufacturing support to local producers across multiple regions. Our in-house coating technology — supplying 30% of China’s black absorber market — means we produce the components that go inside the collector, not just the collector itself.

Customer Overview

Local manufacturers around the world are building solar water heating capacity in their own markets. Some are assembling from imported components; others are building full production lines from scratch. In both cases, access to high-quality core components and manufacturing know-how determines whether the locally produced product can compete with imported finished goods on quality and price.
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What Local Manufacturers Look For in a Component & Technology Partner

  • Core component supply
  • Consistent quality batch to batch
  • Technical documentation
  • Flexible supply format
  • Collaborative engineering support
  • Competitive component pricing

Common Challenges Local Manufacturers Face

  • Access to High-Quality Core Components
  • Technology & Know-How Gap
  • Quality Control Capability
  • Component Supply Stability
  • Cost Competitiveness

How Millionsun Delivers Value to Local Manufacturers?

High-Performance Absorber Sheets — The Core Component

Millionsun runs in-house black selective coating lines. We supply absorber sheets for our own production and other local manufacturers.

  • Absorption rate: 95%±2%
  • Emission rate: 8%±2%
  • Substrate: full aluminum sheet
  • Available in both black and blue selective coating

Manufacturing Knowledge Support

We share our manufacturing experience to help local producers achieve consistent quality:

  • Assembly process documentation based on our production line methodology
  • Quality control checkpoints and test methods
  • Troubleshooting guide for common assembly issues
  • Technical consultation available by email and video call

Quality Consistency

Every batch of absorber sheets is tested for coating performance before shipment. Component specifications are maintained per product master record — the absorber sheet in batch #10 matches batch

Complete Component Supply Package

Beyond absorber sheets, we supply the full set of components needed to assemble a finished flat plate collector:
Component
Specification
Absorber sheet

Full aluminum, black or blue coating

Copper header & riser tubes

Φ22 mm header, Φ8 mm riser

Frame profile

Aluminum alloy 6063, silver or black

Glass cover

Low-iron patterned tempered glass, 3.2 mm, ≥92% transmission

Insulation

Glass wool, 30 mm, 35 kg/m³

Back plate

Aluminum sheet, 0.5 mm

Sealing

EPDM gasket

Fasteners & fittings

Assembly-ready hardware kit

Flexible Supply Format

Format
What We Ship
Best For
Individual components

Sheets, tubes, frames, glass, insulation — each separately packed

Full local assembly

Sub-assemblies

Pre-welded absorber + tube sets, pre-assembled frames

Partial assembly, lower labor requirement

Complete CKD kit

All components for X collectors in one package, with assembly instructions

Turn-key local assembly operation

Our Service Capabilities — Built for Manufacturing Partnerships

Millionsun’s absorber coating and component manufacturing capabilities are structured to support local production partners:
  • Absorber coating capacity
  • Flat plate collector component manufacturing
  • Quality testing
  • Technical documentation
  • Export logistics for components
  • Dedicated supply coordination
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How We Helped a Local Manufacturer Launch Flat Plate Collector Production in 6 Months

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A manufacturer in Southeast Asia wanted to start producing flat plate collectors locally for their domestic market. They had a metal fabrication facility and a team of 15 technicians, but had no experience with selective coating, collector assembly, or solar thermal testing.
Importing finished collectors from China was their existing business model, but import duties and shipping costs were compressing their margin. Local production would give them better pricing control — if they could source the right components and learn the process quickly.

Our Solution

Millionsun provided:

  • Full component supply package — Absorber sheets (black coating), copper tubing, aluminum frames, glass covers, insulation, back plates, and sealing kits for their initial production target of 500 collectors per month
  • Assembly process documentation — Step-by-step procedures based on our own production line, adapted for manual assembly (their team size and equipment level)
  • QC guideline package — Inspection checkpoints, pressure test procedures, and pass/fail criteria per production stage
  • Technical consultation — Three video-call sessions during their first production month to troubleshoot assembly line setup, welding parameters, and sealing technique

The Results

Metric
Before Partnership
After 6 Months with Millionsun
Collector production capability

None

500 units per month

Absorber sourcing

Imported finished collectors

In-house assembly from Millionsun components

Production cost vs. imported finished goods

Baseline (import margin compressed)

18–22% reduction after local assembly

First-batch defect rate

N/A

< 3% (within target)

Time to first production run

Would have taken 12–18 months developing independently

6 months with component + knowledge support

Ready to Start Your Partnership?

Tell us a bit about your market and requirements. We will respond within 24 hours with:
No order too small, no project too complex. 20 years of OEM experience — your brand, our expertise.

WhatsApp

+86 13688999284

Email

sunny@millionsun.com

Visit Our Factory

Baoqing Industrial Park, No. 18 Guangming Road, Dongcheng District, Dongguan

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