Roll Bonded Evaporator Supplier & Manufacturer

High-Precision Thermal Management & OEM/ODM Refrigeration Solutions Since 1988

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White Paper Deep-Dive

Roll Bonded Evaporator Technology: High Performance Heat Transfer

In modern industrial and household refrigeration, the efficiency of thermal exchange directly correlates with energy consumption ratings, operational lifespan, and sustainable footprint. The Roll Bonded Evaporator stands out as a top solution due to its integrated fluid pathway design. Formed through roll-bonding two sheets of aluminum with a printed internal circuitry, then inflating the unbonded paths, this structure ensures optimal surface contact with minimum thermal resistance.

As cooling systems transition toward environmentally friendly refrigerants (like Isobutane R600a and Propane R290), structural integrity and absolute leakproof execution are critical. The high thermal conductivity of pure aluminum, combined with computerized inflation control, guarantees precise heat flux distribution. The result is a cooling performance that prevents temperature stratification in freezers, commercial display cases, and industrial cooling chambers.

Ningbo Taojun Refrigeration Equipment Co., Ltd., drawing on a 38-year history beginning with the Xiangshan Refrigeration Accessories Factory of Zhejiang University, provides precision engineering to meet these changing demands. Our production is characterized by strict structural monitoring, pressure threshold validation, and custom channel topologies to optimize surface temperature uniformity.

Factory 4.0 & Global Purchasing

Supply Chain Resilience & Strategic Sourcing

Advanced Smart Production

Our core production machinery is imported directly from Germany, integrating real-time pressure monitoring and digital dimensional tracing to achieve raw material tolerances within ±0.02mm.

Stringent Quality Control

Equipped with a 5D quality verification framework: high/low-temperature cycling tests at -35°C to 75°C for 500 hours, thermal shock, damp heat, and multi-stage helium mass spectrometer leak detection.

Global Reach & Standards

Exporting to Europe, North and South America, Southeast Asia, and the Middle East. Complete certification path including ISO 9001:2015, EU RoHS directives, and US UL listings.

38+
Years of Manufacturing Experience
<0.05%
Component Defect Rate
15+
Senior R&D Engineers
50+
Export Destination Countries
Trusted Manufacturing Partner

Who We Are?

Ningbo Taojun Refrigeration Equipment Co., Ltd. is located in the scenic coastal district of Xiangshan, Ningbo. Established in 1988 as the Xiangshan Refrigeration Accessories Factory of Zhejiang University, our organization has grown over nearly four decades to become a leading comprehensive enterprise integrating technical research, manufacturing engineering, global sales, and after-sales support.

Our core product line includes copper filter driers, check valves, air conditioning service valves, wire-on-tube and plate condensers, high-purity brass/copper fittings, and customized roll-bonded aluminum evaporators. In 2021, Taojun was recognized as a National High-Tech Enterprise, reflecting our dedication to process innovation, manufacturing upgrades, and advanced administration.

By using premium raw materials—including Japanese import liquid crystal components and European adhesives for specialized thermal films, and strict metallurgical controls for our copper and aluminum tubes—we produce reliable cooling elements under the "Lingshan" and "Taojun" brands. We are strategic suppliers to industry leaders, including Haier, Xinfei, Midea, Gree, Whirlpool, Electrolux, and Huarui.

Ningbo Taojun Factory Facility
Roll Bond Production Line Precision Extrusion Control Welding Station Quality Finished Evaporators
Technical Expertise

What We Do?

Taojun specializes in designing, prototyping, and mass-manufacturing refrigeration components for household, commercial, and industrial HVAC systems. Our specialized products include copper filter driers, receiver tanks, condensers, capillary assemblies, and customized roll-bonded evaporators designed to operate efficiently under high-pressure conditions.

Our copper filter driers absorb moisture and acid, filtering out micro-impurities within the refrigerant cycle. These are standard components in domestic refrigerators, commercial food freezers, ice makers, and mobile climate control systems.

We work closely with clients' engineering departments, offering full CAD customization for plate configurations, inflation channels, connection tubes, and brackets to ensure drop-in compatibility at your assembly facility.

Filter Drier Production Condenser Coil Assembly Copper Accessories Precision Valve Fittings
Historical Milestones

Development History

Our history of technical innovation began with our foundation as a university-affiliated workshop, developing into a leading global supplier of refrigeration accessories.

1988

Founded as the Xiangshan Refrigeration Accessories Factory of Zhejiang University, establishing our technical foundation.

1998

Built a new production plant and expanded specialized assembly lines to meet growing domestic demand.

2008

Implemented MES (Manufacturing Execution System) and digital workflow controls, achieving factory-wide process transparency.

2012

Formed Ningbo Taojun Refrigeration Equipment Co., Ltd. and launched the "Taojun" brand for condenser and valve series.

2021

Certified as a National High-Tech Enterprise, acknowledging our innovations and patent portfolio.

2024

Upgraded to Industry 4.0 smart systems with automated helium leak testing and CCD inspection systems.

Organizational Values

Corporate Culture & Core Values

Honesty

We are committed to transparent client communication, clear material specifications, and quality verification. Integrity is the foundation of our long-term client relationships.

Innovation

Technical evolution drives our development. Collaborations with academic institutions keep our engineers at the forefront of heat exchange design.

Responsibility

We take responsibility for our products. Our team supports our components throughout their service life, ensuring stable system integration.

Cooperation

We focus on close alignment with customers, material partners, and global logistics providers to create efficient and reliable supply chains.

Taojun Team Office Engineering R&D Team
Versatile Thermal Applications

Target Application Fields

Our roll-bonded evaporators and auxiliary refrigeration accessories are integrated into diverse temperature control applications globally:

Domestic Cold Storage

Standard evaporators for double-door, multi-door, and under-counter refrigerators, offering consistent food preservation temperatures with minimal frost build-up.

Commercial Merchandisers

Used in beverage coolers, supermarkets, display cases, and ice makers where rapid pull-down times and continuous performance are required.

Industrial & Logistics

Custom cooling panels designed for solar-powered cooling systems, pharmaceutical cabinets, cold-chain transport, and heat pump units.

Commercial cooling system application Medical vaccine refrigerator application Beverage merchandiser application Industrial refrigeration unit integration
Verified Compliance

Quality Assurance & System Certifications

Our company is ISO 9001:2015 certified (Registration No.: 41325Q00065R0S), verifying our design and manufacturing processes for copper filter driers, condensers, access valves, and evaporators. Partners can verify this certification status through the official CNCA database.

Our products comply with European safety and environmental standards, holding EU RoHS and REACH certifications. We also carry UL listings for high-pressure components, supporting compliance for equipment exported to the North American market.

To maintain product quality, our facility operates on a 5D quality control system. All materials are tested upon arrival, and inline detectors verify tolerances. Completed units undergo automated testing before packaging.

ISO 9001 Certification Document

Main ISO 9001:2015 Certificate

Scope of ISO Certification

Scope of Certification Details

UL Certification document RoHS test documentation CE technical file Quality Management System award
Infrastructure Tour

Our Workshop & Laboratories

Taojun Factory Workshop

Manufacturing Workshop

Equipped with high-speed tube bending, punching, and automated surface treatment systems.

Taojun Assembly Line

Integrated Assembly Line

Optimized for high-volume production of copper filter driers and capillary connections.

Taojun Analytical Laboratory

R&D Testing Laboratory

Where our engineers run thermal cycle modeling and mechanical stress analysis.

Operational Support

Our Service & Engineering Workflows

1. Technical Consultations & Pre-Sales Engineering

  • Direct communication with R&D engineers to align product specifications.
  • Thermal capacity calculations and flow path simulation.
  • Response to standard technical inquiries within 8 hours.

2. Manufacturing Quality Control

  • Continuous inline pressure and integrity checking.
  • Dimensional and trace analysis via our MES network.
  • Verification of corrosion protection layers.

3. Post-Sales & Systems Integration Support

  • Assistance with integrating components into customer lines.
  • Design modifications based on field performance data.
  • Standard 1-year manufacturing warranty with ongoing technical support.
FAQ Portal

Technical & Procurement FAQ

Key technical information regarding our manufacturing capabilities, quality assurance, and design specifications:

What are the mechanical and composition standards of the aluminum sheets used?
We utilize high-purity aluminum alloys (typically 1060 or 1100 series) with an aluminum content of ≥99.6%. This choice ensures high thermal conductivity, formability, and reliable welding performance during the rolling process.
How does Taojun prevent internal leakage in Roll Bonded Evaporators?
Our process controls include high-tonnage hot-rolling for complete molecular bonding, followed by 100% inline pressure testing using high-sensitivity helium mass spectrometer leak detectors. Our leakage detection threshold is set to <1x10^-7 mbar.l/s.
What surface coatings are applied to prevent oxidation and chemical corrosion?
Evaporators undergo chemical conversion pretreatment, followed by cathodic electrophoretic coating (E-coating) or powder painting. This coating system is tested to withstand over 500 hours of continuous salt spray exposure (ASTM B117) without bubbling or rust.
Can you customize inflation channel geometries for variable cooling needs?
Yes. Using custom silk-screen patterns, we can manufacture single-sided inflation (flat on one side) or double-sided inflation channels. Our design team can optimize fluid dynamics to match your cooling profiles.
What is your typical production lead time and minimum order quantity (MOQ)?
For standard designs, our production lead time is typically 15 to 21 days. Custom configurations requiring new tooling patterns can be designed, sampled, and tested within 30 to 45 days. Our standard production MOQ is 500 units per run.
Are your refrigeration components compatible with eco-friendly refrigerants like R290 and R600a?
Yes, all Taojun evaporators and filter driers are designed to be compatible with hydrocarbon refrigerants. Our processes remove internal moisture and manufacturing residues, protecting systems from blockages.
Full Components Range

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All Roll Bonded Evaporator Products