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.

ULP is an industrial equipment brand dedicated to the research and development, manufacturing, and long-term operational value management of compressed air systems.

The brand name "ULPPRO" stems from a triple understanding of the essence of industry:

Establish oneself with high-quality products, establish credibility through altruistic services, and build a business through universal benefit and win-win cooperation.

ULP, with Air compressor, PSA nitrogen generators, Chillers, Vacuum pump and Refrigeration compressor technology at its core, has built a complete system integrating R&D, production, sales and service. It provides customers with comprehensive compressed air solutions covering selection, operation, energy conservation and full life cycle management in fields such as industrial manufacturing, new energy, food and medicine.

The products have obtained international certifications such as ISO 9001, ISO 14001, ISO 45001, and European CE. We can also customize products with ASME certification.

Its product line includes high-efficiency permanent magnet variable frequency screw air compressors, oil-free air compressors, portable air compressors, medium and high pressure compressors, silent type air compressors, PSA nitrogen generators, chillers as well as various vacuum pumps. These products have been widely recognized by customers in actual use across various industries.

We do not end with the delivery of a single device, but aim for long-term stable operation and continuous energy-saving benefits. We help customers reduce system energy consumption and operation and maintenance costs, and build a reliable and sustainable gas usage foundation.

The ULPPRO Pressure Swing Adsorption (PSA) Nitrogen generator is an on‑site nitrogen production device manufactured in China. It efficiently and economically separates high‑purity nitrogen directly from the air, offering a safe and reliable alternative to traditional bottled nitrogen or liquid nitrogen supply. The unit features a skid‑mounted, highly integrated structure that is stable and easy to move.

Using purified compressed air as the feed gas, the generator utilizes the difference in adsorption rates of carbon molecular sieve (CMS) for oxygen and nitrogen, achieving separation under ambient temperature and a certain pressure. The system typically consists of two adsorption towers (A and B) that automatically alternate between “pressurization‑adsorption” and “depressurization‑desorption” under PLC control, ensuring a continuous and stable supply of nitrogen with adjustable purity as required.

One major advantage of our ULPPRP nitrogen generator is that it can be directly connected to an air compressor, forming a complete on‑site nitrogen production system. Together with oil‑free/oil‑injected screw air compressors, refrigerated air dryers, and precision filters, it creates an integrated “air treatment + nitrogen generation” solution.

It can also be used in conjunction with vacuum pumps, chillers, and heat pumps. The corresponding application scenarios and value of such integration are as follows:

Wide range of applications

With its economical, safe, and high-purity characteristics, the PSA nitrogen generator plays an irreplaceable role in the following core industrial production processes:

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.

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.

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..