Engineered for maximum volumetric efficiency, continuous duty applications, and critical energy savings across modern industrial environments.
Founded in early 2004, Shanghai Honest Compressor Co., Ltd. is a British-owned enterprise and a leading figure in manufacturing twin-screw air compressors. Located at NO. 355 Jiajian Branch Road, Malu Town, Jiading District, Shanghai, China, our manufacturing hub stands out as a core supplier of air system solutions globally.
Our expansive production capabilities cover a broad variety of compression technologies. From high-pressure piston compressors designed for heavy-duty niche processes to high-capacity variable speed screw air compressors spanning 3kW to 480kW, we provide comprehensive industrial solutions. This includes advanced oil-free screw systems, refrigerant compressors, gas separation systems, adsorption dryers, and fine ceramic membrane filtration systems.
Leveraging European engineering principles paired with localized structural supply chain efficiencies in China, we deliver high-efficiency pneumatic systems that conform strictly to international validation criteria such as CE, ISO, and ASME.
Staying at the forefront of thermodynamic innovation and motor control architecture to deliver optimal specific power efficiency.
By dividing the compression ratio across two structural stages, we reduce internal back-flow leakage and minimize the work of compression. Interstage fluid cooling optimizes thermodynamic efficiency, approaching an isothermal process while saving up to 15% energy compared to single-stage equivalents.
Permanent Magnet (PM) synchronous motors eliminate rotor slip losses. Integrated with Variable Speed Drives (VSD), our compressors dynamically match speed to downstream flow fluctuations. This maintains system pressure within ±0.1 bar, dramatically cutting energy draw under partial-load conditions.
For applications where fluid contamination is not an option, our oil-free screw range uses precision-synchronized timing gears and advanced polymer rotor coatings. This ensures absolute separation of the compression chamber from the lubrication circuit, achieving certified ISO 8573-1 Class 0 air quality.
Our Jiading District manufacturing center in Shanghai incorporates automated robotic assembly line cells, real-time smart testing stations, and digital inventory tracking. By manufacturing critical core components in-house—including our highly efficient asymmetric rotor profiles—we guarantee precision tolerances and exceptional quality control.
Our production facilities benefit from direct access to China's robust industrial component ecosystem. This proximity allows us to rapidly secure raw castings, specialized bearings, electrical components, and high-frequency variable speed control modules. Our lean production approach minimizes lead times, ensures stable cost control, and protects global procurement projects from market supply volatility.
Each unit undergoes long-run dynamic load tests, thermal profiling, vibration analysis, and acoustic tests before shipment. This level of quality control ensures reliable operations and minimal startup commissioning issues upon arrival.
Whether you require standard high-volume private label equipment (OEM) or deep engineering co-development for specialized installations (ODM), we support your complete lifecycle development.
| Feature Parameter | OEM (Original Equipment Manufacturer) | ODM (Original Design Manufacturer) |
|---|---|---|
| Design Authority | Client provides mechanical parameters & brand guidelines. | Shanghai Honest handles calculations, fluid modeling, and systems engineering. |
| Hardware Customization | Configured with standard packaging, bespoke colors, and private labels. | Includes custom air end profiles, specific structural footprints, and customized controls. |
| PLC & Software Integration | Standard PLC pre-configured with client logo and basic Modbus registers. | Bespoke IoT programming, custom SCADA outputs, and proprietary firmware. |
| Target Markets | High-volume distribution, rental fleets, and established equipment lines. | Niche heavy industries, custom engineering, and unique process requirements. |
| Certification & Compliance | Utilizes factory certifications (CE, ISO) under private brand files. | Custom witness tests, ASME pressure vessel design, and specialized explosion-proof ratings. |
Years Engineering Experience
Kilowatt Power Range
Certified Manufacturing
Load Tested Deliveries
Our systems are designed to meet the strict uptime, purity, and safety demands of various industrial environments.
High-volume pneumatic tooling requires stable system pressure and consistent air volume. Our VSD screw compressors match the pulsing demand of paint booths, robotic welding cells, and pneumatic fastening systems, keeping energy waste to a minimum.
For cleanroom production, zero trace oil carryover is vital. Our dry-type oil-free compressors prevent chemical and particulate contamination, safeguarding chip yields and helping ensure compliance with strict medical purity regulations.
Refineries, mining applications, and petrochemical plants require explosion-proof machinery. We customize systems with certified ATEX or IECEx electrical components, flame-retardant enclosures, and reliable temperature-monitoring systems to operate safely in volatile atmospheres.
We work closely with global engineering clients to simplify the import and site integration process. Every component is designed to meet target-market safety regulations, such as ASME pressure vessel certifications in North America, CE-MD/PED directives in Europe, and EAC standards in the Eurasian Economic Union.
Our localized support structure helps ensure your team has direct access to engineering assistance. We provide comprehensive documentation packages, including 3D CAD files, dynamic electrical schematics, motor test curves, and detailed parts manuals.
Our network of distribution and service partners provides technical assistance, routine maintenance programs, and fast spare parts delivery to maximize system uptime globally.
Detailed engineering answers to the most common inquiries from system integrators, design houses, and procurement teams.
A standard fixed-speed compressor operates on a load/unload control cycle. During the unload cycle, the motor runs at full speed without producing compressed air, wasting up to 40% of its rated power. A Permanent Magnet Variable Speed Drive (PM VSD) compressor continuously modulates motor speed to match real-time air demand. Since the motor's power consumption scales cubically with its speed reduction, VSD units can cut energy consumption by 35% or more in facilities with fluctuating air requirements.
In a single-stage compressor, compressing air to a high pressure ratio raises discharge temperatures and increases back-flow air leakage across rotor clearances. A two-stage system splits the compression ratio between two separate rotary stages. An interstage mist cooling system lowers the air temperature before it enters the second stage, reducing the overall compression work. This brings the system closer to efficient isothermal compression, increasing volumetric efficiency and lowering specific energy usage.
ISO 8573-1 Class 0 specifies that total oil contamination (including liquid, aerosol, and vapor states) must be less than 0.01 mg/m³. Achieving this level of purity requires a completely dry compression chamber. The rotors are synchronized by high-precision external timing gears rather than fluid lubricants, and air seals are pressurized to prevent lubricant from migrating into the compression path. Validation testing is conducted using specialized aerosol spectrometers and vapor chromatography to verify air purity under full-load operating conditions.
Our OEM/ODM engineering services include structural footprint redesigns for compact space constraints, custom PLC integration with specialized Modbus or Profinet configurations, high-altitude motor de-rating, seawater-resistant marine modifications, and dual-voltage control panels. We also design customized filtration systems and integrated adsorption air dryers to meet specific operating environment requirements.
Explore our advanced dry-type screw compressors, fixed speed models, vacuum systems, and multi-stage permanent magnet units.
Partner with Shanghai Honest Compressor Co., Ltd. for energy-efficient, reliable, and customized compressed air solutions.
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