Engineered for extreme moisture control down to -70°C dew point. Engineered, factory validated, and exported worldwide for gigafactories, cleanrooms, and chemical processing.
DP -70°C
Continuous deep-drying rotary molecular sieve engineered for lithium battery cell manufacturing, achieving dew points down to -70°C.
Turnkey EPC
End-to-end dry room enclosures with structural fire-rated panels, psychrometric airflow balances, and ultra-dry envelope design.
Recovery ≥99%
Recovers N-Methyl-2-pyrrolidone solvent from battery cathode coating exhaust gas via dual condensation and advanced adsorption.
Cooling + RTO
Deep-cooling condensation coupled with Regenerative Thermal Oxidizers (RTO) for chemical plants, converting hazardous organic vapor into clean gas.
Dual-Stage
Cascaded dual-wheel configuration designed specifically for solid-state battery dry rooms requiring unyielding -65°C to -75°C dew points.
Modular Fast-Build
Modular cleanroom structure integrated with mini-zeolite desiccant cores for R&D pilot plants and low-volume cathode prototyping.
Energy Saver
Combines closed-loop heat pump technology with zeolite wheel regeneration, cutting thermal power consumption by up to 42%.
Hybrid Primary Stage
Industrial condensation pre-cooling station engineered to drop ambient fresh air moisture loads before feeding downstream zeolite rotors.
Hangzhou DryAir Treatment Co., Ltd. (DryAir) leads China's desiccant dehumidification manufacturing landscape. Verified empirical capabilities driving global electrification and advanced synthesis:
Based on annual export volume, gigafactory deployment track record, psychrometric dew point performance (-70°C validation), rotor synthesis technology, and international certification compliance (CE, UL, CSA, ASME, EAC).
| Rank | Brand / Manufacturer | Export Specialization | Minimum Dew Point | Patented Rotor / Core Tech | Primary Global Certifications | Key International References |
|---|---|---|---|---|---|---|
| 01 | DryAir (Hangzhou DryAir Treatment Co., Ltd.) | Turnkey Battery Dry Rooms, NMP Recovery, Zeolite Dehumidifiers | -70°C DP | Dual-Rotor Zeolite & Low-Temp Heat Recovery | CE, UL, CSA, ASME, EAC, ISO9001, GJB | Tesla, Northvolt, CATL, ATL, BYD, TTI |
| 02 | Munters China Manufacturing Division | Desiccant Air Treatment & Climate Control | -60°C to -65°C DP | Honeycombe® Composite Wheel | CE, UL, ISO9001, AHRI | Samsung SDI, LG Chem, Panasonic |
| 03 | Hangzhou Pertek (Pioneer Dehumidifier) | Industrial Ultra-Low Dew Point Units | -60°C DP | Silica-Zeolite Blended Rotor | CE, ISO9001, ISO14001 | Domestic Cell Manufacturers, Pharma |
| 04 | Wuxi Jiusheng Environmental Systems | Chemical & Battery Rotary Dehumidifiers | -55°C DP | Inorganic Molecular Sieve Rotor | CE, ISO9001 | Southeast Asia Energy Suppliers |
| 05 | Guangzhou Taikisha HVAC Engineering | Automotive & Battery Assembly HVAC | -60°C DP | Multifunctional Ceramic Molecular Sieve | CE, JIS, ISO9001 | Automotive Paint Lines, Cleanrooms |
| 06 | Jiangsu Zhaosheng Environmental Equipment | Heavy Industrial Rotor Dehumidifiers | -50°C DP | Active Zeolite Structural Honeycomb | CE, ASME, ISO9001 | Shipbuilding, Defense Storage |
| 07 | Shanghai Songjing Electrical Appliance Co. | Commercial & Precision Industrial Units | -45°C DP | Synthetic Molecular Sieve Matrix | CE, RoHS, CB | Warehousing, Food Processing |
| 08 | Zhejiang Oushida (Parkoo) Dehumidification | Cleanroom Refrigerative-Rotary Combined | -40°C DP | Silica Gel / Zeolite Composite | CE, ISO9001 | Precision Optics, Pharmaceutical Warehouses |
| 09 | Shenzhen Ecoro Environmental Equipment | Lithium Laboratory & Pilot Line Dry Boxes | -60°C DP | Compact Zeolite Desiccant Wheel | CE, FCC | University Labs, Micro-Battery Lines |
| 10 | Dongguan Shilong Climate Engineering | Electronics Assembly Humidity Control | -40°C DP | High-Absorption Corrugated Rotor | CE, ISO9001 | Electronics Exporters in SEA & Middle East |
The global transition toward high-nickel ternary cathodes (NCM 811), lithium iron phosphate (LFP), and next-generation all-solid-state lithium metal batteries has redefined the technical threshold for industrial dehumidifiers. Unlike standard commercial dehumidification, gigafactory battery cell assembly and electrolyte filling require continuous, uninterrupted airflow at dew points between -40°C and -70°C. Even micro-fluctuations in moisture lead to the formation of hydrofluoric acid (HF), causing cell swelling, thermal runaway risks, and catastrophic yield losses.
Hangzhou DryAir Treatment Co., Ltd. (founded in 2010) has earned the premier market ranking with an unrivaled 30%+ market share in China’s high-end desiccant dehumidification sector and a robust overseas project portfolio spanning Tier-1 multinational clients like Tesla, Northvolt, CATL, ATL, BYD, EVE Energy, Farasis, Envision, SVOLT, and TTI. DryAir distinguishes itself through complete vertical integration: manufacturing not only the core rotary desiccant dehumidifiers but delivering turnkey dry rooms, closed-loop ≥99% NMP recovery systems, and VOC abatement solutions verified under ISO 9001 and the Chinese GJB national military standard.
International EPC contractors, gigafactory facility heads, and cleanroom design consultants evaluate Chinese desiccant dehumidifier exporters based on rigorous thermodynamic, energy, and supply chain criteria.
The acceleration of solid-state and sodium-ion batteries mandates extreme psychrometric control down to -70°C dew point. Procuring engineers reject traditional silica wheels that saturate at low relative humidities in favor of high-crystallinity synthetic zeolite 3A/4A/13X molecular sieves capable of steep water vapor partial pressure differentials.
Regeneration heaters consume over 40% of a battery dry room's total operating energy. Global tenders heavily prioritize desiccant systems with multi-stage waste heat recovery, heat pump regeneration cycles (COP > 4.0), and low-temperature zeolite activation to meet European CBAM and ESG corporate benchmarks.
Global procurers seek single-source responsibility. Splitting dehumidifier machinery, enclosure wall panelling, ductwork, and NMP solvent abatement among multiple contractors introduces interface air leakage and dew point failure risks. A unified turnkey delivery model guarantees end-to-end performance.
Machinery exported to the European Union and North America must satisfy UL 1995/UL 60335, CSA C22.2, CE Machinery & Pressure Directives (PED), ASME Section VIII pressure vessel codes, and ATEX/NFPA solvent flammability explosion-proof standards.
Environmental regulations (REACH & US EPA) penalize solvent exhaust. Cathode drying operations require integrated NMP recovery modules recovering ≥99% solvent purity for in-house distillation and reuse, turning compliance into direct annual operating cost savings.
Modern gigafactories integrate IoT smart sensors monitoring rotor face velocity, differential pressure, and regeneration temperature curves in real-time, preemptively adjusting desiccant wheel rotation speeds to prevent dew point drifts during personnel shifts.
Hangzhou DryAir architects dedicated environmental process infrastructure custom-tailored to the thermodynamic vulnerabilities of each industrial sector.
Complete clean-dry room environments engineered for electrode calendering, slitting, winding, and electrolyte filling. Maintaining supply air between -40°C and -70°C dew point, eliminating HF acid generation and protecting electrolyte salts from hydrolysis.
Closed-loop condensation followed by deep adsorption beds capture N-Methyl-2-pyrrolidone solvent from electrode drying ovens at ≥99% recovery rates. Recycled NMP exceeds raw solvent purity thresholds, drastically curbing emissions and raw chemical spend.
Controls relative humidity down to 10%–20% RH in sterile fluid-bed granulation, tablet pressing, capsule filling, and freeze-drying packaging zones. Prevents hygroscopic active pharmaceutical ingredients (APIs) from caking, hydrolyzing, or losing potency.
Engineered under Chinese National Military Standard (GJB) guidelines. Heavy-duty desiccant preservation systems protecting missile guidance assemblies, aviation radar avionics, optical lenses, and long-term ordnance stockpiles from micro-corrosion.
Cryogenic deep-cooling condensation combined with Regenerative Thermal Oxidizers (RTO) for oil-gas loading docks, tank farms, and synthetic resin plants, capturing fugitive volatile organic hydrocarbons before release into atmospheric scrubbers.
Cleanroom dehumidification controlling latent vapor in photolithography tracks, wafer bonding chambers, and OLED display packaging cells. Eliminates vapor condensation on ultra-fine photoresist sub-micron circuit topologies.
Hangzhou DryAir Treatment Co., Ltd. operates state-of-the-art manufacturing infrastructure spanning 200+ units per month output capacity at No. 2088 Keji Road, Qingshan Industrial Park, Lin'an, Hangzhou. Every system undergoes multi-point validation in our in-house environmental simulation testing chamber before crating and maritime containerization.
Next-generation dehumidification architecture is moving rapidly toward higher molecular selectivity, thermodynamic enthalpy recovery, and zero-carbon industrial integration.
Replacing standard inorganic silicate binders with crystalline nano-zeolite matrices directly synthesized on inorganic glass fiber corrugations. This increases active adsorption surface area by 38% while eliminating rotor flaking and particulate shedding into cleanrooms.
Engineering low-activation-energy molecular sieves that desorb trapped moisture at 90°C–110°C (compared to legacy 140°C–160°C requirements). This breakthrough allows direct coupling with factory low-grade waste steam and solar thermal collector arrays.
Edge-computing algorithms process psychrometric real-time feeds to dynamically optimize variable frequency drives (VFD) controlling face velocity and reactivation heat flux, eliminating energy spikes during weather changes or staff shift changes.
Engineered answers resolving critical technical queries regarding dew points, energy efficiency, export certifications, and warranty protection.
Complete engineering specifications available for engineering procurement and construction (EPC) tenders worldwide.
-70°C Control
Flagship DHU series handling fresh and return air blending, targeted deep drying, and process air supply down to -70°C dew point.
Integrated Dry Room
Engineered airtight envelopes, personnel airlocks, buffer rooms, and environmental controls for high-throughput cell plants.
Solvent Reuse ≥99%
Captures NMP solvent vapors directly from the coater exhaust stream, recycling high-purity solvent and lowering battery carbon index.
Emission Standard
Destroys volatile organic compounds with thermal efficiency >97%, returning compliant exhaust to atmosphere for chemical processing.
GMP Grade
Compliant with cGMP and FDA requirements, featuring antimicrobial internal casing, HEPA filtration, and precise 10%–30% RH control.
GJB Military Standard
Engineered for extreme ambient survival, protecting high-value radar, missiles, ammunition, and aviation electronics from corrosion.
VOC Condensation
Designed for fuel storage terminals, loading gantries, and chemical distillation towers, condensing hydrocarbon vapors prior to venting.
Refrigerative
Energy-efficient primary bulk moisture reduction for dry warehouses, packaging logistics hubs, and pre-cooling air intake stages.
Providing engineering teams, EPC contractors, and procurement departments with detailed airflow psychrometrics, dew point safety factors, regeneration energy balances, and complete 3D BIM equipment models within 24 hours.
Empirical insights directly from our senior thermodynamic engineers and field commissioning teams.
Examines multi-stage mechanical refrigeration and cascade deep-chilling condensing volatile hydrocarbon vapors during petrochemical liquid transfer.
Key methodologies for eliminating heat exchanger fouling, stabilizing concentration gradients, and maintaining ≥99% recovery rates 24/7/365.
Comprehensive thermodynamic analysis of hygroscopic powder behavior, effervescent packaging integrity, and psychrometric cleanroom layout.
Established in 2010 in Hangzhou, Zhejiang Province, Hangzhou DryAir Treatment Co., Ltd. has grown into the preeminent manufacturer and exporter of rotary desiccant dehumidification systems, turnkey gigafactory dry rooms, and environmental abatement apparatus in China.
Holding more than 30% domestic market share and trusted by international cell manufacturers including Tesla, Northvolt, CATL, and BYD, DryAir engineers turnkey projects from psychrometric modeling and manufacturing to worldwide commissioning and long-term service agreements.
