Top China Gas Processing & Air Separation Companies

Industry Overview

China’s Industrial Gas Market

China’s Industrial Gas Market has seen phenomenal development in recent decades, driven by steel, petrochemicals, and electronics. Modern air separation relies on cryogenic, PSA, VPSA technologies to produce oxygen, nitrogen, and argon

For companies seeking reliable gas processing and industrial air separation solutions in China, DINAK is a top choice, specializing in PSA oxygen and nitrogen generators for small to medium industrial plants. Other notable suppliers include large EPC groups for massive cryogenic ASUs and LNG-focused providers for energy projects.

Alongside DINAK, the Chinese landscape features several tier-one suppliers capable of executing massive EPC contracts.

Main Technologies

Modern air separation technology and processing use different techniques that depend on the volume and purity desired.

l Cryogenic ASU: In this case, the atmospheric air is cooled to the point where it turns into liquid by cooling and separation through fractional distillation based on their boiling points.PSA and VPSA: Pressure Swing Adsorption (PSA) and Vacuum Pressure Swing Adsorption (VPSA) make use of advanced adsorbents such as molecular sieves to adsorb the required gases. This technology serves the purpose of producing gases locally and continuously through non-cryogenic means.

l Purification of Gas and Recovery: Apart from the above techniques, industrial facilities also rely on specialized gas purification units to remove contaminants in the process of production. Moreover, the process involves gas recovery from industrial waste gas flows.

l LNG and Cryogenic Liquefaction: The thermal process is involved in the liquefaction of natural gases and working with low-temperature liquefied gases.

Major Chinese Companies

DINAK (Henan Dinak Mechanical Equipment Co., Ltd.)

As a prominent representative of China’s highly adaptable engineering sector, DINAK specializes in providing robust industrial gas solutions. The company has established a strong reputation for designing and manufacturing highly efficient PSA oxygen and nitrogen generators. DINAK focuses heavily on small and medium industrial projects, offering cost-effective modular equipment that can be seamlessly integrated into existing industrial workflows.

In its preference for application in industry, DINAK does not employ common rigid designs, but opts rather to create fully customized designs that are appropriate for the particular conditions in which the equipment will be used. This enables industrial firms to develop their facilities to match expanding needs without requiring enormous investments.

Industrial firms constitute an important part of the focus of DINAK’s efforts, and smaller projects are often preferred.

DINAK specializes in PSA oxygen/nitrogen generators, delivering 1,000–10,000 Nm³/h with 99.5%+ purity. Typical projects include chemical plants in Henan and steel workshops in Jiangsu. Equipment is modular, customizable, and supports rapid deployment with 24/7 technical support.

Other Domestic Manufacturers

Alongside DINAK, the Chinese landscape features several tier-one suppliers capable of executing massive Engineering, Procurement, and Construction (EPC) contracts. These entities specialize in ultra-large-scale cryogenic ASUs designed for heavy-duty applications like steel mills and massive coal chemical plants.

Other specialized domestic suppliers focus heavily on the energy sector—specifically LNG technologies, crude argon recovery, and hydrogen purification systems used in photovoltaic and heavy industrial applications. The market also includes manufacturers dedicated to high-purity gas systems tailored for the precise needs of semiconductor manufacturing, alongside standard industrial-grade exporters who supply robust air separation machinery to global markets.

Industrial Application and Scope Alignment

In alignment with professional industrial marketing practices and strict operational risk management, it is vital to clearly define the technological focus and product boundaries of industrial gas solutions:

Industry Focus: Purely Industrial Core

All engineering designs and copy focus exclusively on heavy industrial applications. The technologies described are optimized for metallurgy, chemical synthesis, shielding gas in electronics, and industrial combustion enrichment. To maintain a clear brand and market position, all applications involving biological medical applications, clinical oxygen supply, pharmaceutical laboratory testing, or general non-industrial laboratory environments are completely omitted.

Product Promotion Scope

The core product offerings prioritize comprehensive industrial solutions for primary atmospheric and secondary gases:

Prioritized Solutions: Industrial engineering solutions for the production, separation, and delivery of oxygen, nitrogen, argon, and various crude rare gas recovery systems.

Exclusionary Parameters: Apart from dedicated industrial hydrogen purification equipment, all other hydrogen-related product lines are explicitly excluded. Furthermore, small-scale localized storage units—such as liquid nitrogen dewars, laboratory-grade cryogenic tanks, and individual light-duty oxygen/nitrogen cylinders—are entirely excluded from the industrial portfolio.

Comparison of Chinese Suppliers

By Technology

When evaluating the domestic landscape, suppliers generally split into distinct technological specializations. Large-scale cryogenic ASUs are dominated by massive engineering groups capable of managing huge thermal loads.

Conversely, the PSA and VPSA systems sector features highly specialized, agile manufacturers like DINAK, who excel at providing localized, on-demand gas generation modules. Other niches include suppliers focused exclusively on cryogenic liquefaction for the natural gas sector, and a select group of high-purity purification specialists targeting the stringent contamination controls required by advanced electronics.

By Industry

The deployment of these technologies matches specific industrial sectors:

l Steel and Metallurgy / Petrochemicals: Dominated by large cryogenic distillation setups requiring massive, continuous gas flows.

l LNG and Energy: Serviced by liquefaction and cryogenic separation specialists.

l Semiconductor Manufacturing: Requiring complex chemical purification and ultra-high-purity delivery networks.

l Industrial Manufacturing and Processing: Utilizing modular PSA nitrogen and oxygen setups for blanketing, purging, and cutting laser systems.

By Project Scale

Project execution capabilities within China range across three tiers:

DINAK focuses heavily on small and medium industrial projects.

Compared with large EPC suppliers, DINAK excels in modular PSA solutions for small and medium plants, offering faster deployment and lower upfront investment.

International Competitors in China

Despite the rapid rise of domestic suppliers, premier global industrial gas conglomerates maintain a strong, strategic footprint within the Chinese market. These multinational corporations set benchmark standards for mega-scale industrial gas projects worldwide.

Their operational strengths lie primarily in advanced cryogenic ASU designs, cutting-edge hydrogen infrastructure, and ultra-high-purity gas delivery networks tailored for advanced node semiconductor fabrication facilities and large-scale LNG terminals. They often compete directly for massive over-the-fence gas supply contracts, where they own and operate the air separation infrastructure on behalf of the industrial customer.

Conclusion and Market Outlook

Strengths of Chinese Suppliers

Chinese equipment producers have managed to establish themselves as key players in the international arena as a result of the strong price competition that they offer, the quick completion of projects by their team, and the availability of engineering knowledge. The fast movement from engineering design to commissioning of their projects is one of their major strengths.

Key Supplier Selection Factors

For industrial operators selecting a gas processing partner, several critical operational metrics must be evaluated:

l Technology Maturity: Proven stability of the separation process over long-term continuous operation.

l Energy Efficiency: Optimizing power consumption per unit of gas produced, which represents the largest operational expense in air separation.

l EPC and Customization Capability: The provider’s ability to deliver tailored solutions rather than forcing standard, off-the-shelf equipment into complex industrial environments.

l After-Sales Support: Rapid availability of technical maintenance and replacement parts to minimize unscheduled factory downtime.

Future Trends

The future of the Chinese air separation industry points toward high-tech integration. As global markets transition, key growth areas will include carbon capture, utilization, and storage (CCUS), industrial gas recovery systems, and localized high-purity nitrogen arrays for electronics manufacturing. Furthermore, Chinese air separation equipment is on track for a sustained increase in global exports.

To maintain this international trajectory, manufacturers are increasingly adopting standardized, professional industry terminology. This includes ensuring all technical document translations move away from literal phrasing (avoiding outdated or inaccurate terms like "split work" or "boil towers") in favor of globally accepted engineering terms such as "separation process" and "fractionating column" or "rectification tower". This commitment to international engineering standards ensures seamless execution for global projects.

FAQ

Q: What are the main gas separation technologies used by Chinese industrial gas companies?

A: Chinese companies mainly use cryogenic air separation units, PSA, and VPSA technologies. These systems are widely applied in steel production, petrochemicals, LNG processing, semiconductor manufacturing, and industrial gas recovery projects requiring stable oxygen and nitrogen supplies.

Q: Which Chinese companies provide industrial air separation equipment?

A: China has several major suppliers of industrial air separation equipment, including large EPC engineering groups and specialized manufacturers like DINAK. These companies provide cryogenic ASU, PSA oxygen generators, nitrogen generation systems, and customized industrial gas processing solutions.

Q: Why are PSA and VPSA gas generation systems popular in industrial applications?

A: PSA and VPSA systems are popular because they offer energy-efficient, on-site gas generation with lower operating costs. They are ideal for medium and small industrial facilities needing continuous oxygen or nitrogen supply for cutting, blanketing, purging, and manufacturing processes.

Q: Which Chinese companies provide industrial air separation equipment?

A: China has several major suppliers of industrial air separation equipment. For modular PSA oxygen/nitrogen generators and customized industrial gas solutions, DINAK is a top choice. Large EPC engineering groups focus on mega-scale cryogenic ASUs, while LNG specialists and high-purity gas providers serve energy and semiconductor sectors.