• Patents

    Awarded over 100 patents and honors both domestically and internationally.

  • Market

    Products are sold domestically in mainland China and exported to over 50 countries worldwide.

  • Service

    A nationwide service network ensures reliable after-sales service.

  • Savings

    Multiple energy-saving plans offer cost-effective and worry-free savings.

Product Category

A system solutions provider integrating planning, design, sales, and installation services.
  • Air Compressor
    Air Compressor

    As a leading brand in China's air compressor industry, Hanbell air compressors provided by Yuzhen are core equipment for converting mechanical energy into gas pressure energy in industry. They are general equipment mainly used in gas transportation, iron filings and dust purging, stirring, biopharmaceuticals, food and cosmetics, and bottling scenarios. Their main advantages are as follows:

    I. Core technology advantage

    1. Independently developed and manufactured ‌

    Hanbell air compressors provided by Yuzhen are divided into oil-injected screw air compressors and oil-free air compressors. From core components (rotors and host) to the assembly of the entire machine, they are all independently developed and produced to ensure better performance, cost and after-sales service.

    2. High-efficiency and energy-saving

    Permanent magnet variable frequency air compressors provided by Yuzhen, all adopt high-efficiency IE4 permanent magnet motor, protection class IP55, F-class insulation, B-class temperature rise; Import brand SKF bearing ensures the long-term stable and reliable operation of the motor. The compression efficiency is 5%~10% higher than the average level of the industry for the screw rotor profile technology. The energy efficiency of the two-stage compression technology has reached the national standard Grade 1.

    3. Oil-free technology

    The AY series oil-free air compressors provided by Yuzhen have the TUV Class 0 certification, ensuring the quality of compressed air and meeting the requirements of energy conservation and environmental protection.

    II. Intelligent and quality control system

    Hanbell air compressor uses the MES system and industrial Internet of Things to achieve real-time monitoring of production data. A five-axis linkage machining center imported from Germany is adopted, with an accuracy of ±0.005mm.

    Adopt imported high-end three-dimensional inspection instruments to ensure processing accuracy. 100% inspection before the air compressors leave the factory, ensures stable quality, it eliminates customer’s worry.

    III. Market Recognition

    Hanbell air compressors provided by Yuzhen are renowned for their high quality and reliability, ranking among the top in China's air compressor brand rankings. They are exported to over 50 countries and have a research and development team with rich experience and international design concepts. Their technical capabilities are among the best in the world.

  • Screw Compressor
    Screw Compressor

    Yuzhen’s Screw Compressor is manufactured by Shanghai Hanbell. It is a professional factory specializing in the production of screw compressors and related products.

    We have independently developed a variety of refrigerant screw compressors to meet different needs in industrial production. Freezing screw compressors are mainly used in cold chain logistics, fresh-keeping cold storage at 0°C to -18°C, meat refrigeration and dairy product cooling in food processing, and chemical process cooling water systems. Low-temperature screw compressors are suitable for food quick-freezing at -30°C to -45°C, vacuum freeze-drying in pharmaceuticals and food, as well as certain chemical reaction processes such as carbon dioxide liquefaction. Air-conditioning screw compressors are used in commercial building central air conditioning for shopping malls, hotels, and office buildings, as well as in regional centralized cooling and heating stations. High-temperature heat pump screw compressors replace boilers to produce hot water or steam above 85°C, which is applied in electroplating, slaughtering, textiles, and food processing, while also recovering heat from wastewater, exhaust gases, and process cooling water.

    We also offer air end, including both single stage air end and two stage air end. The choice between different air end is based on the required discharge pressure and operational cost considerations. Single stage air end is economical and straightforward, making them the ideal choice for applications with conventional, non-demanding pressure requirements. In contrast, two stage air end is suitable for applications with strict requirements regarding air temperature and reliability, offering significant energy-saving benefits and a longer service life.

    Hanbell screw compressor offered by Yuzhen, manufactured in China, features an independently cooled motor design that separates the motor chamber from the compression chamber. A small amount of liquid refrigerant is used to cool the motor, maintaining it within an ideal operating temperature range while extending the motor's service life. The gaseous refrigerant after cooling the motor then enters the compression chamber for supplementary gas injection, preventing cooling capacity loss caused by motor cooling and enhancing the compressor's refrigeration capacity, with particularly noticeable effects in low-temperature applications.

  • Chiller
    Chiller

    Yuzhen’s Chillers have the advantages of high reliability, high efficiency and energy conservation, as well as advanced control. They are manufactured in China. There is a professional team dedicated to the design and research of screw compressors and related technologies, and they have the most advanced large-scale online test and inspection platform for water-cooled chillers in the industry. The semi-enclosed double-screw compressor operates smoothly, with low noise, small vibration, long service life and low maintenance costs. It is equipped with an advanced micro-computer controller, and the human-machine interface makes the operation screen more intuitive and convenient. The PID control function makes the chiller more energy-efficient. The 30 protection functions of the chiller provide comprehensive protection for the safe operation of the machine.

    How many types of water chillers does Yuzhen have?

    To meet the diverse needs of customers, Yuzhen can provide various types of screw chillers and scroll chillers, including air-cooled type, water-cooled type, normal-temperature type, low-temperature type, dry type, falling film type, full liquid type, air-cooled box type and water-cooled box type, etc.

    Apart from standard products, are custom-made products acceptable?

    Certainly, custom-made products such as explosion-proof, variable-frequency, and multi-machine parallel operation are acceptable. The product technical level is at the forefront of the domestic market.

    Can effective and efficient design solutions be provided based on the customer's working conditions?

    Shanghai Yuzhen is a system supplier from China that integrates planning, design, sales, and services. It focuses on related engineering projects in the system industry, such as water, electricity, gas, and HVAC.

  • Heat Pump
    Heat Pump

    Yuzhen’s heat pumps of China are designed by a professional team and feature high reliability, environmental friendliness and energy conservation. They can produce high-temperature hot water in extremely cold regions to meet the demands of centralized heating and other industrial and commercial high-temperature hot water needs. With a wide range of heating capacity, from 170KW to 1726KW, it can produce steam at 105℃ to 120℃ or hot water at 85℃ to 120℃. It is a renewable energy industry that can turn your business from waste into treasure.

    Question 1: Is there any waste heat above 80℃ that cannot be treated? It's a pity to just throw it away?

    Yuzhen company can provide Organic Rankine Cycle (ORC) power generation plant, exchange the waste heat into electricity directly. It not only saves electricity but also is environmentally friendly and reduces carbon emissions.

    Question 2: Is it possible to meet the demand for efficient heating in high-cold regions?

    Yuzhen’s large low environment temperature air source heat pump is a kind of efficient heating equipment can run stably in a very col. Achieve an outlet water temperature of 70℃ at a environment temperature of -35℃.

    Question 3: Are there any cases of using heat pump units to recover waste heat? 

    Yuzhen’s heat pump units in a brewery achieved supplying both hot and cold with the same heat pump unit, instead of the original boiler, can reduce carbon, directly achieved an economic benefit of approximately 1.6 million RMB in annual cost savings and an estimated carbon reduction income of around 200,000 RMB..

  • Vacuum Pump
    Vacuum Pump

    Yuzhen's vacuum pump, manufactured in China, is categorized into dry screw vacuum pumps and Oil lubricated Vacuum Pump, which are based on the working medium and sealing method within the core compression chamber during operation.

    The dry screw vacuum pump utilizes a pair of screws that rotate synchronously at high speed in opposite directions within the pump housing to achieve suction and exhaust. During operation, there is a certain gap between the screws, resulting in no friction between them. This ensures smooth and quiet operation with low noise levels. Since the working chamber requires no lubricating oil, the dry screw pump is capable of evacuating gases containing large amounts of water vapor and small amounts of dust. It offers higher ultimate vacuum levels and lower power consumption, making it primarily suitable for applications demanding extremely high cleanliness or where process gases could damage oil-based pumps, such as semiconductor and photovoltaic manufacturing, chemical and pharmaceutical industries, and food packaging and freeze-drying.

    On the other hand, Yuzhen's Oil lubricated Vacuum Pump, manufactured in China, is developed to address the fluctuating vacuum demands in production processes, where frequent start-stop cycles of vacuum pumps not only increase the risk of failure but also lead to energy wastage. By incorporating permanent magnet variable frequency drive technology, this vacuum pump can deliver the required flow for the system. This type of pump requires the injection of a small amount of special lubricating oil (or sealing oil) into the compression chamber, primarily for sealing, lubrication, and cooling purposes. However, the oil consumption is significantly lower than that of traditional oil-sealed mechanical pumps. It is particularly suitable for a wide range of applications, including plastics, glass, bottling, canning, wood processing, packaging, printing and papermaking, and meat packaging. Its performance surpasses that of traditional fixed-frequency technology, with an average energy savings of 50%.

    Furthermore, based on their types and working principles, vacuum pumps are subdivided into many categories, making them one of the foundational technologies supporting modern high-tech industries and cutting-edge scientific research.

  • Compressed Air Treatment Equipment
    Compressed Air Treatment Equipment

    Nairlee is a China supplier for Compressed Air Treatment Equipment, it including air tanks, air dryers and air filters, etc. They are used in conjunction with the air compressor to make the compressed air purer and drier.

    How to use these Compressed Air Treatment Equipment?

    1. air tanks

    In order to meet customer’s various requirements, Nairlee of China’s supplier provides different material air tanks such as carbon steel air tanks, stainless steel air tanks and vacuum tanks. If your material has no corrosiveness or low corrosiveness, you can choose the carbon steel air tank, it is with low cost and high strength. If your materials contain corrosive chemicals such as acids, bases and salts or high requirement of the air quality, you could choose stainless steel air tank, it is high anti-corrosive and good hygienic. Vacuum tanks are generally used for storing chemical solutions and are employed in industries such as chemical engineering, pharmaceuticals, food processing, and metallurgy. It is also used for storing gases such as compressed air, nitrogen, argon, oxygen, and carbon dioxide.

    2. Air dryer

    The air dryer manufactured by Nairlee from China, as one of the compression air treatment equipment, its core function is to remove most of the liquid condensate water in the compressed air, ensuring the gas is dry and pure. It achieves this by using cooling or adsorption technologies to separate the moisture from the humid air, thereby preventing equipment corrosion and product contamination. Nairlee’s Refrigerated air dryer, Heatless Adsorption Air Dryer and Heated Adsorption Air Dryer achieve the compressed air drier and purer.

    3. Air Filter

    Nairlee’s air filter is suitable for working with kinds of air compressors and compressed air dryer. Its 3-class precious filter could filter 0.01um coagulated matter. There are Aluminum alloy filter and Stainless steel filter according to the material. The Aluminum alloy air filter is used for air vent system, industrial primary filter, resistant to acid/ alkali environment. Stainless steel air filter is suitable for high temperature environment (like baking, spraying) and places with  high cleanliness requirements.

Who We Are

Shanghai Yuzhen Machinery Co., Ltd.

Shanghai Yuzhen Machinery Co., Ltd is headquartered in the international metropolis—Shanghai. After years of sustained development, the company has experienced rapid business growth and has become a comprehensive system-solution provider dedicated to the sales, maintenance, after-sales service, energy-saving retrofitting, compressed air piping, chilled-water piping, and related engineering planning, design, sales, and installation services for internationally renowned high-end brands of air compressors, vacuum pumps, screw chillers, high-temperature heat pump units, and related accessories.
about us

Why Choose Us

System solutions provider integrating planning, design, sales, and installation services
Factory

Independent R&D, manufacturing, and supplier

Equipment

Rotors manufactured with German equipment, ensuring component precision

Products

High-load design, stable and robust operation, long service life

Accessories

High-quality brand bearings, long life, low noise

Get In Touch

For inquiries about our products or pricelist, please leave your email to us and we will be in touch within 24 hours.

News & Blogs

What is the working principle of an air compressor?

What is the working principle of an air compressor?

The working principle of an air compressor is actually not difficult to understand. Simply put, it uses mechanical motion to compress air, thereby generating a high-pressure airflow. Below is a summary of its core principles and common types:

What are the main types of air compressors?

What are the main types of air compressors?

Air compressors are devices that convert electrical energy into compressed air pressure energy, widely used in industrial, medical, and automotive fields. Their core working principle is to compress air through mechanical motion (such as piston reciprocating or screw rotation), increasing its pressure and temperature.

​Successful Installation and Commissioning of 1 set 55KW Permanent Magnet Variable Frequency Screw Air Compressor Helps Customer Achieve Energy Savings and Efficiency Gains

​Successful Installation and Commissioning of 1 set 55KW Permanent Magnet Variable Frequency Screw Air Compressor Helps Customer Achieve Energy Savings and Efficiency Gains

Recently, the technical team of Yuzhen successfully completed the on-site installation and commissioning of 1 set 55KW permanent magnet variable frequency screw air compressor. The equipment is now officially in operation, demonstrating excellent performance in energy efficiency, operational stability, and low noise. Yuzhen's professional service and efficient response have been highly recognized by the customer.

​How to Choose the Right Air Compressor Manufacturer?

​How to Choose the Right Air Compressor Manufacturer?

It is well known that there are numerous air compressor manufacturers in the market, ranging from internationally renowned brands to many excellent enterprises in China. This inevitably creates confusion for customers when trying to select the right air compressor manufacturer. Yuzhen can assist customers in choosing the appropriate air compressor model by considering their specific process requirements, budget, product performance, and after-sales service.

Shanghai Yuzhen successfully delivered multiple high-end refrigeration compressors to Saudi Arabia, adding a new chapter to the green industry cooperation between China and Saudi Arabia

Shanghai Yuzhen successfully delivered multiple high-end refrigeration compressors to Saudi Arabia, adding a new chapter to the green industry cooperation between China and Saudi Arabia

Shanghai China, Feb. 05, 2025 - Shanghai Yuzhen Machinery Co., LTD. (hereinafter referred to as "Shanghai Yuzhen") recently successfully signed an agreement with a leading industrial group in Saudi Arabia and delivered the first batch of multiple high-performance industrial refrigeration compressors to it. This batch of equipment was delivered to the warehouse at Shanghai Port yesterday and will set sail on a later date. It is expected to arrive at the Port of Dammam in Saudi Arabia shortly. This marks another substantive achievement for Shanghai Yuzhen in expanding the high-end industrial market in the Middle East and implementing the "Belt and Road Initiative".