Top 10 Screw Chiller Manufacturers in China

Over the past decade, China has become one of the most important production bases for industrial and process cooling equipment, including screw chillers used in manufacturing, agricultural climate control, food processing, cold chain warehousing and data centers.

Globally, screw chillers are the fastest‑growing product segment thanks to their efficiency, part‑load performance and suitability for continuous operation. Asia–Pacific, led by China, holds the largest share of the industrial chiller market, driven by rapid industrialization, large‑scale infrastructure and demand for energy‑efficient cooling solutions.

For procurement managers seeking long‑term partners rather than one‑off suppliers, the key question is: which Chinese manufacturers can combine technical reliability, compliance, stable delivery and flexible OEM/ODM support?

How We Selected These 10 Manufacturers

To make this list useful and replicable, we applied clear and transparent criteria:

1. Certifications and compliance

– Valid ISO9001 quality management certification from recognized registrars.

– Export‑oriented compliance for major markets (typically CE marking for Europe, and RoHS or comparable environmental standards where applicable).

– Ability to provide third‑party test reports for electrical safety, pressure system safety and energy performance.

2. Technical depth in screw chillers

– Established product lines for air‑cooled and water‑cooled screw chillers, including industrial, process and low‑temperature variants.

– Access to performance testing facilities for long‑duration running tests and high‑pressure tests.

– Demonstrated use of appropriate refrigerants, including low‑GWP options where required.

3. R&D and customization capability

– Dedicated engineering teams for mechanical design, refrigeration systems and controls.

– Measurable R&D investment and a track record of new product development.

– Ability to support OEM/ODM projects, from cabinet layout and control logic to full branding.

4. Production capacity and delivery reliability

– Separate production lines for industrial chillers and screw chillers, with clear annual capacity ranges.

– Documented quality control processes: incoming materials inspection, process inspection and full‑unit running tests.

– Clear lead times for standard models and project‑based units, plus mechanisms to stabilize delivery in peak seasons.

5. Export experience and post‑sales service

– Multi‑country export track record and knowledge of regional requirements (EU, Middle East, Southeast Asia, Americas).

– Dedicated international sales and technical support teams, remote commissioning capability and structured spare‑parts programs.

– Awareness of local regulatory needs around energy efficiency and environmental compliance.

The following ten companies are representative of China’s screw chiller capabilities across different segments: comprehensive industrial suppliers, process‑cooling specialists and flexible OEM‑friendly manufacturers.

How Buyers Should Evaluate Screw Chiller Suppliers

From a procurement perspective, a robust evaluation framework should include the following dimensions:

1. Factory certifications and legal compliance

– Request scanned copies of ISO9001, CE and RoHS certificates and check certificate numbers, issuing bodies and validity periods.

– Use registrar directories or tools like IAF CertSearch to verify that certificates are active and cover the correct facility.

– For pressure‑bearing components, confirm adherence to relevant directives or standards (e.g., EU Machinery Directive and pressure equipment rules referenced in the Declaration of Conformity).

2. Engineering and application capability

– Assess whether the supplier can provide cooling‑load calculations and selection reports tailored to your process, rather than generic “model recommendations”.

– Check if mechanical, electrical and controls engineers are in‑house and actively involved in project discussions, not just relying on a single external design template.

3. Quality control and testing

– Ask for written descriptions of QC processes, including incoming inspections on compressors, heat exchangers and electrical components.

– Confirm that full units undergo extended running tests (for example 72 hours) and leak/pressure tests before shipment.

4. Delivery stability and spare‑parts planning

– Clarify standard lead times for key models and the availability of semi‑finished stock to support urgent orders.

– Request a recommended spare‑parts list and typical lead times for compressors, control boards and sensors, as well as compatible alternatives.

5. Communication efficiency and after‑sales support

– Evaluate responsiveness during the quotation and design phase—slow or unclear communication is usually a warning sign for execution.

– Confirm remote support capabilities, on‑site service options and troubleshooting procedures.

China’s Screw Chiller Cluster Advantages

China’s manufacturing clusters provide structural advantages for screw chiller production:

– East China (Zhejiang, Jiangsu)

Strong clusters in industrial refrigeration and process cooling equipment, supported by complete supply chains for copper tubing, sheet metal, welding, CNC machining, heat exchangers and control systems. This is well suited to medium‑to‑high‑end industrial screw chillers.

– South China (Guangdong, Shenzhen region)

Dense ecosystems in laser cooling, precision refrigeration, data‑center cooling and industrial chillers, with rich experience in small and mid‑size units and precision temperature control.

– Central and North China

Concentrations of suppliers oriented to cold chain, large HVAC systems and heavy industrial refrigeration, suitable for large‑tonnage screw chillers and integrated systems.

These clusters allow overseas buyers to source both standardized units and highly customized systems, often from different tiers of suppliers within one country.

Top 10 Screw Chiller Manufacturers in China (2026)

> Note: The order below reflects a combination of technical relevance, export orientation and segment coverage, not a ranking by size or price.

1. Zhejiang Kingfit Environment Co., Ltd.

Positioning: Cost‑efficient, R&D‑focused manufacturer for industrial and agricultural temperature‑control solutions, with strong support for small and mid‑size brands and OEM/ODM projects.

– Company background and scale

Founded from a small air‑conditioning and refrigeration service center in 1998, Kingfit evolved into a dedicated manufacturing enterprise and, in 2014, was registered as Zhejiang Kingfit Environment Co., Ltd. The current factory operates a single production workshop of around 40,000 m² and eight high‑tech production lines, covering screw chillers, maglev chillers, industrial chillers, climate‑control units, grain coolers, heat pumps and cold‑room cooling units.

– Core strengths and product focus

Kingfit focuses on industrial and agricultural climate solutions, combining screw chillers with intelligent environmental control for manufacturing, grain storage and cold chain. Its positioning suits project‑based orders and OEM cooperation for regional brands that need tailored solutions rather than off‑the‑shelf units.

The company invests approximately 5% of annual revenue into R&D, targeting one to two new products per year and working with external consultants in agricultural and industrial fields to refine designs based on real‑world feedback.

– Quality and certifications

Kingfit operates under ISO9001 and 6S management, has obtained CE certification and national energy‑level technical appraisal (CQC), and has been recognized as a national high‑tech enterprise.

The vertically integrated workshop covers copper pipe bending, electrical assembly, laser cutting, punching, CNC machining, evaporator and condenser coiling, welding and final assembly, backed by structured inspection at each stage.

– Markets and service model

With 27 domestic offices and exports to more than 60 countries, Kingfit has experience in multi‑market deployment and international project communication.

For OEM clients, the company supports full‑cycle cooperation: demand analysis, cooling‑load design, product customization, branding (nameplate and cabinet design) and commissioning support.

Best fit scenarios

Medium‑sized system integrators, equipment manufacturers and project contractors needing flexible, engineering‑driven screw chiller solutions—for example agricultural climate control, grain cooling, industrial process cooling and cold‑chain applications—where communication and customization are more important than off‑the‑shelf catalog supply.

2. TopChiller (China)

Positioning: Comprehensive industrial chiller manufacturer with extensive standard series and mature export experience.

– Established in 1999, TopChiller designs and manufactures complete lines of chillers, including air‑cooled and water‑cooled screw chillers, with cooling capacities roughly from 1 ton up to 800 tons, serving more than 40 application industries.

– The company has passed ISO9001 quality management and ISO14000 environmental management certifications and holds CE certification, supported by ERP‑based management and modern QC systems.

– A national industrial refrigeration testing station and an air‑conditioning experimental center enable performance testing at levels higher than some national standards, including high‑pressure and extended running tests before delivery.

Best fit scenarios

Buyers needing broad model coverage, multi‑industry application and fast standard selection—for example plastics, brewing, medical imaging and welding—who value documented procedures and comprehensive testing.

3. GESON Chiller (Nanjing)

Positioning: One‑stop provider of industrial chillers and screw chillers with wide capacity range and strong global export footprint.

– GESON offers water‑cooled and air‑cooled screw chillers with capacities roughly from 3 to 4500 RT and operating temperatures from about –145°C to 25°C, covering industrial processes, HVAC and special low‑temperature needs.

– The company emphasizes strict QC, with up to 47 process inspections, laboratory testing and full factory running tests, and uses branded screw compressors and high‑efficiency heat exchangers.

– Products are exported to North and South America, Southeast Asia, the Middle East and Africa, backed by customized solutions and multilingual control interfaces.

Best fit scenarios

Contractors and distributors running multi‑country portfolios who need large capacity ranges, low‑temperature options and standardized QC processes across regions.

4. Coolingstyle (Shenzhen Coolingstyle Technology Co., Ltd.)

Positioning: Specialist in compact, high‑precision cooling systems for laser and micro‑refrigeration applications.

– Founded in 2013 in Guangdong, Coolingstyle focuses on industrial water chillers and precision temperature‑control systems, particularly micro refrigeration for laser technology, medical devices and semiconductor cooling.

– The company’s systems can achieve temperature control accuracy down to ±0.01°C, in compact and lightweight designs optimized for integration into equipment.

Best fit scenarios

Laser cutting, medical diagnostics and other applications requiring high precision at small to medium cooling capacities, more in the direction of precision process chillers than large industrial screw units.

5. Tongfei Refrigeration (Sanhe Tongfei Refrigeration Co., Ltd.)

Positioning: Large‑scale industrial and HVAC chiller manufacturer with strong presence in industrial water chillers.

– Established in 2001 in Hebei, Tongfei has around 1800–1900 employees and produces industrial water chillers, portable chillers and air‑cooled systems.

– The company focuses on traditional industrial and HVAC markets, providing large‑scale water‑cooled equipment and related systems.

Best fit scenarios

Large factory utility systems, building HVAC projects and industrial plants requiring sizeable water‑cooled screw chillers integrated with other HVAC equipment.

6. Kansa Refrigeration (Zhuji Kansa Refrigeration Equipment Co., Ltd.)

Positioning: Mid‑sized manufacturer of industrial chillers with solutions for plastics, laser, plating and electronics.

– Founded in 2006 in Zhejiang, Kansa offers industrial water chillers, laser chillers and both air‑cooled and water‑cooled units, with emphasis on reliability and maintenance simplicity.

– Export‑oriented, Kansa provides tailored cooling packages for multiple industrial segments, making it suitable for diverse OEM projects.

Best fit scenarios

Equipment manufacturers in plastics processing, laser machining, plating and electronics who need practical, easy‑to‑maintain screw or other industrial chillers without overly complex system integration.

7. S&A (Guangzhou Teyu Electromechanical Co., Ltd.)

Positioning: High‑volume industrial chiller producer, especially strong in laser and electronics cooling.

– Established in 2003, S&A manufactures industrial water chillers, refrigeration modules and personal cooling systems, with large‑scale production capacity and broad market coverage.

– Laser and electronics industries are major application fields, supported by participation in trade fairs and consistent presence in domestic and overseas markets.

Best fit scenarios

Buyers needing stable supply of small and mid‑size units for laser equipment and other manufacturing processes, with emphasis on scale and standardization.

8. HSTARS (Guangzhou Hstars Group Co., Ltd.)

Positioning: Specialist in large water‑cooled systems for HVAC and industrial refrigeration.

– Founded in 1992, HSTARS focuses on chillers for HVAC, large water‑cooled equipment such as cooling towers and industrial low‑temperature systems.

– Products are designed for commercial buildings, cold storage and large‑scale industrial facilities requiring robust, high‑capacity systems.

Best fit scenarios

Cold storage projects, logistics hubs, industrial parks and commercial complexes requiring integrated systems (chillers plus cooling towers and other equipment) with strong engineering support.

9. Chillerone (China)

Positioning: Process‑cooling specialist delivering custom industrial chiller systems, including screw chillers.

– Headquartered in Dezhou, Shandong, Chillerone focuses on tailor‑made process chillers, including water‑cooled, air‑cooled, glycol and customized systems for pharmaceuticals, plastics and precision industries.

– The company emphasizes solutions that meet international standards and process requirements, making it suitable for complex multi‑stage cooling systems.

Best fit scenarios

Pharmaceutical, chemical and precision manufacturing projects needing system‑level design, multi‑stage heat exchange and comprehensive process integration.

10. SCY Chiller (China)

Positioning: Industrial chiller manufacturer with strong expertise in screw chillers and custom designs.

– Based in Shenzhen, SCY Chiller was founded in 2010 and specializes in water‑cooled, air‑cooled, screw, glycol and custom industrial/process chillers.

– It serves manufacturing, petrochemical, food processing and other sectors worldwide with cost‑effective systems designed for reliability.

Best fit scenarios

Customers seeking a balanced combination of performance and cost, including manufacturers and project contractors that require industrial and process screw chillers with flexible configuration options.

Comparison Table: Capacity, MOQ and Certifications (Indicative)

*Note: Values below are indicative ranges based on publicly available information and typical product portfolios. Exact figures should be confirmed with each supplier.*

Manufacturer	Typical Capacity Range (RT / Ton)	Common Certifications (typical)	Main Export Markets (typical)	MOQ for Standard Models (indicative)	OEM/ODM Depth (relative)
Zhejiang Kingfit Environment	~10–800 RT	ISO9001, CE, national energy appraisal	Asia, Europe, Middle East, Africa, others	Project‑based; small batches for standard	High (structure + controls + brand)
TopChiller	1–800 RT	ISO9001, ISO14000, CE	SE Asia, Europe, Americas, Middle East	Small batches for catalog models	High
GESON Chiller	3–4500 RT	ISO9001, CE (export‑oriented compliance)	Americas, SE Asia, Middle East, Africa	Several units per model; project flexible	Medium–High
Coolingstyle	Up to ~100 RT (high precision)	ISO9001 (typical), CE for selected models	Global laser and precision equipment markets	Very flexible; suitable for small batch OEM	Medium (controls and integration)
Tongfei Refrigeration	Medium–large industrial capacities	ISO9001, HVAC‑related certifications	Domestic plus selected export markets	Mainly project‑based	Medium
Kansa Refrigeration	Small–medium industrial capacities	Common industrial certifications, ISO	Multi‑market exports	Project batches and small series	Medium
S&A (Teyu)	Small–medium	ISO, CE (for major lines)	Global laser and electronics equipment	Volume‑oriented; small orders possible	Medium
HSTARS	Large water‑cooled systems	ISO, CE and industry‑specific approvals	HVAC and cold‑chain projects worldwide	Project‑specific, engineered systems	Medium (system integration)
Chillerone	Various, process‑oriented	ISO and relevant process standards	Pharma, plastics, precision industries global	Project‑based	High (system‑level design)
SCY Chiller	Small–large industrial capacities	Common industrial certifications	Manufacturing, petrochemical, food processing	Flexible, suited to mixed project/series	Medium

Buyer’s Guide: Practical Steps for Screw Chiller Procurement

1. Verifying factory certifications and their validity

– Request high‑resolution scans of ISO and CE certificates, including certificate numbers, issuing bodies and scope of application.

– Use registrar directories or IAF CertSearch to confirm ISO certificates, and ask for Declarations of Conformity (DoC) for CE, checking that they reference specific EU directives and relevant harmonized standards.

– Cross‑check that the certified facility is the same one producing your equipment.

2. Sample and pilot run strategy

– Start with a standard model or smaller capacity screw chiller to validate control logic, stability and real energy consumption.

– Record key parameters during trials: inlet/outlet water temperatures, power consumption, noise level, alarm frequency and restart behavior.

– Plan for a 48–72 hour continuous run under realistic load conditions before approving large‑scale orders.

3. Factory audit and production assessment

– During visits (on‑site or virtual), assess whether dedicated lines for screw chillers exist, including heavy welding stations, tube bending, pressure testing and assembly areas.

– Review QC records for recent batches, focusing on leak tests, pressure tests and corrective actions taken when failures occurred.

– Interview technical managers about typical failure cases and their response processes.

4. Logistics and packaging considerations

– Confirm packaging standards: wooden crates, vibration protection, corrosion‑prevention measures (e.g., nitrogen charging or drying procedures).

– Check weights and dimensions of the assembled units early to avoid surprises with port handling and inland transport.

– For units with refrigerant and oil, clarify how they are shipped (charged or uncharged) and what site procedures are required before commissioning.

Internal “Pitfall” Guide: Critical Issues Rarely Discussed Publicly

Industry insiders often pay attention to issues that rarely appear in marketing materials:

1. Energy performance quoted for a single operating point only

Many data sheets highlight excellent efficiency at a specific rated point. However, actual operation often involves part‑load and varying ambient conditions. You should request performance curves or data at multiple load ratios—25%, 50%, 75% and 100%—and at relevant ambient temperatures to understand the true cost of ownership.

2. Long‑term micro‑leakage in refrigerant circuits

Inadequate tube wall thickness, poor welding or insufficient leak testing may lead to slow refrigerant loss over years. Early performance appears acceptable, but energy consumption rises and capacity declines. Factory visits should include observation of welding quality, leak‑test methods and actual pressure‑test records.

3. Overly complex controls with poor maintainability

High‑end control systems can become difficult for local technicians, forcing dependence on the original manufacturer. Before purchasing, ask for detailed control logic documentation, alarm code lists and user manuals in the local language, and ensure your maintenance team can handle them.

4. Spare‑parts uncertainty and compatibility gaps

If spare‑parts platforms and alternative brands are not planned in advance, replacements for compressors, boards or sensors may be expensive or slow to obtain. Include spare‑parts lists, pricing and lead times in the contract and verify compatibility with multiple brands wherever possible.

Common Industry Pain Points and How to Avoid Them

1. Sub‑standard materials (e.g., thin tubing, low‑grade heat‑exchanger materials)

– Risk: premature corrosion, reduced heat transfer, increased leak probability.

– Mitigation: request detailed material specifications and, for larger orders, third‑party material tests; visually inspect inventory and sample components during audits.

2. Opaque compressor brands and models

– Risk: unknown long‑term reliability, difficulties in sourcing replacements, unpredictable performance.

– Mitigation: insist on explicit compressor brand and model in quotations and contracts and restrict downgrading or substitution without prior approval.

3. Scaling up from a single successful prototype directly to mass orders

– Risk: batch‑production quality drift, inconsistent components in later lots.

– Mitigation: ask for data on shipments and failure rates over the last 12 months and review how the factory manages product change control and batch‑level QC.

Building a Robust Screw Chiller Supply Strategy

China’s screw chiller manufacturers offer a combination of product diversity, industrial cluster advantages and growing expertise in energy‑efficient refrigeration. Successful long‑term cooperation, however, depends on more than price: it requires structured evaluation of certifications, engineering capability, QC processes, delivery reliability and spare‑parts support.

Within this landscape, Zhejiang Kingfit Environment Co., Ltd. stands out as a flexible, R&D‑oriented partner for industrial and agricultural temperature‑control projects, particularly for small and mid‑size brands seeking deep OEM support and tailored solutions. In combination with large‑scale suppliers like TopChiller and GESON Chiller and process‑focused companies such as Chillerone and SCY Chiller, buyers can design multi‑layered sourcing strategies that balance technical risk, cost and regional coverage.

If you are planning a new screw chiller procurement cycle or OEM program, start by applying the selection criteria outlined above, shortlist a mix of flexible and large‑scale suppliers, and run structured samples and audits. By grounding decisions in data, documented performance and verified certifications, you can build a stable and resilient cooling supply chain for the coming decade.

FAQs

1. How can I verify that a supplier’s ISO certificate is valid and not expired?

Ask for the ISO certificate scan showing the registrar and certificate number. Then:

– Check the registrar’s public client directory to confirm status and validity date.

– Use IAF CertSearch to cross‑verify the certificate and scope against the actual production facility.

If details do not match, treat this as a serious risk and request clarification or additional proof.

2. How do I confirm that CE and RoHS compliance genuinely applies to my screw chiller models?

– Request the Declaration of Conformity for the specific models you plan to purchase and verify that it references relevant directives and standards.

– Ensure product naming and model numbers on the DoC match your quotation and contract.

– For critical projects, consider consulting local compliance experts in the destination market to validate documentation.

3. How can I evaluate screw chiller performance under part‑load conditions?

– Request performance data or curves showing efficiency at multiple load points (25%, 50%, 75%, 100%) and at different ambient temperatures.

– If the supplier cannot provide such data, arrange field or pilot tests to collect real energy‑consumption data under representative loads.

4. What is the best way to assess a factory’s ability to handle special conditions (very low temperature, corrosive environments)?

– Ask for case studies or references where similar conditions have been addressed, including materials (e.g., stainless‑steel heat exchangers, special coatings) and design modifications.

– Request a technical proposal explicitly describing structural changes, protection strategies and validation plans (e.g., extended low‑temperature tests, corrosion‑resistance tests).

5. How can I choose suitable configurations for different destination markets if I am not familiar with local regulations?

– Discuss the supplier’s project experience in your target regions and ask for examples of installations in those countries.

– Combine supplier input with local engineering consultants or certification bodies to ensure that electrical safety, energy efficiency and environmental requirements are fully addressed.

– Make regulatory compliance requirements part of your technical specification and purchasing contract.

References

– [Future Market Insights – Industrial Chiller Market] [futuremarketinsights]

– [Meticulous Research – Industrial Chillers Market] [fortunebusinessinsights]

– [Technavio – Industrial Refrigeration Market Analysis] [mtedmachinery]

– [MTED Machinery – How to Verify CE and ISO Certificates] [meticulousresearch]

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