Explore our core engineering catalog engineered for sports medicine centers, boutique wellness spas, commercial athletic clubs, and premium brand distributors worldwide.
Targeted multi-frequency FIR therapeutic blanket engineered with low-EMF heating elements for athletic detox and thermal recovery protocols.
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Custom rectangular 304/316 marine-grade stainless steel spa ice bath with continuous-loop circulating cooling system and high-efficiency filtration.
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Synergistic pulsed electromagnetic field (PEMF) combined with 660nm red light and 850nm near-infrared wavelengths for cellular recovery.
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Cost-optimized, highly portable single-zipper design with precision digital thermostat control and durable waterproof Oxford exterior.
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High-torque magnetic drive centrifugal circulation pump engineered for silent operation, long lifespan, and steady 1000 L/H dynamic volume flow.
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Multi-gemstone negative ion thermal therapy mat integrating crushed amethyst and tourmaline crystals for deep systemic relaxation.
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Commercial-grade dual-occupancy thermal steam sauna tent featuring rapid steam saturation, insulated multi-layered fabric, and stainless frame.
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Comprehensive clinical photobiomodulation mat equipped with targeted red and near-infrared light nodes to accelerate microcirculation.
Inspect Photon MatA rigorous examination of thermodynamics, refrigeration loops, titanium coaxial heat exchangers, and the evolution of smart AI-driven micro-chiller platforms.
Unlike conventional copper or aluminum coils vulnerable to chemical erosion from saline, chlorine, and ozone, our chillers leverage proprietary pure titanium (Gr. 1) spiral-corrugated heat exchanger tubing. This metallurgical standard guarantees imperviousness to corrosive pitting, achieves a 35% higher coefficient of heat transfer, and maintains stable fluid dynamic performance over 100,000 thermal cycles.
Meeting stringent European F-Gas regulations (EU 517/2014) and US EPA SNAP guidelines, our production line prioritizes R290 (Propane) and R32 difluoromethane. Boasting a Global Warming Potential (GWP) of less than 3 for R290 and zero Ozone Depletion Potential (ODP), these closed-loop thermodynamic cycles deliver a 22% improvement in seasonal Energy Efficiency Ratios (SEER).
Commercial bio-security requires real-time microbial suppression. Our units integrate dynamic dual-stage sterilization: a flow-through chamber with a germicidal 254nm ultraviolet-C lamp destroys bacterial DNA/RNA, while a regulated corona discharge ozone generator breaks down organic biofilms, guaranteeing sterile, crystal-clear water without skin irritation or excessive chlorine dependency.
Deployment of BLDC rotary inverter compressors delivering dynamic capacity modulation from 20% to 110%, cutting idle operational wattage to under 45W.
Embedded Tuya and Matter-certified WiFi/BLE microcontrollers enabling real-time remote diagnostics, predictive maintenance alarms, and fleet management for commercial gyms.
Reclaiming rejected thermodynamic heat from the cold plunge condenser to pre-heat companion infrared sauna setups, yielding comprehensive net-zero contrast therapy suites.
Syncing plunge water temperature and session pacing to wearable biometric outputs (HRV, core temperature, REM sleep latency) via open API architecture.
Engineered to adapt to distinct operational profiles—from continuous-duty commercial wellness studios to high-end residential patio installations.
Professional athletic facilities demand uninterrupted rapid pull-down capabilities between training blocks. When twelve 100kg athletes consecutively submerge, thermal load spikes dramatically. Our 1.5HP commercial cooling units utilize oversized condensers and high-head commercial centrifugal pumps to restore a baseline 3°C (37.4°F) bath within 7 minutes, preventing thermal drift during peak post-match recovery windows.
Contrast therapy suites pairing 90°C dry saunas with 4°C cold plunges rely on bulletproof water sanitation and continuous acoustic dampening. Dongda chillers operate under 48 dBA through acoustic compressor blankets and vibration-isolated fan motors. Integrated dual-sanitizer systems maintain public bath bacterial compliance without pervasive chemical odours.
Direct-to-consumer (DTC) brands require plug-and-play simplicity, sleek minimalist aesthetics, and fail-safe safety features. We supply full OEM turnkey solutions with quick-connect 1-inch self-sealing brass fittings, multi-voltage (110V/230V) smart GFCI interrupters, and custom injection-molded chassis coated in powder-coated aerospace aluminum or marine acrylic.
| Model / Parameter | Compressor Type | Refrigerant / Charge | Cooling Capacity | Flow Rate (L/H) | Noise (dBA) | Certifications |
|---|---|---|---|---|---|---|
| 0.3HP Compact Series | Hermetic Rotary | R290 / 65g | 950 Watts (3,240 BTU) | 800 – 1,000 | ≤ 46 dBA | CE / RoHS / FCC |
| 0.5HP Balanced Edition | High-Efficiency Rotary | R290 / 95g | 1,600 Watts (5,460 BTU) | 1,000 – 1,500 | ≤ 48 dBA | CE / ETL / FCC |
| 1.0HP Pro Recovery | DC Inverter Rotary | R32 / 240g | 2,800 Watts (9,550 BTU) | 2,000 – 2,500 | ≤ 51 dBA | CE / UL Std / RoHS |
| 1.5HP Dual-Stage Commercial | Twin-Rotor Inverter | R32 / 380g | 4,200 Watts (14,330 BTU) | 3,000 – 4,000 | ≤ 54 dBA | CE / FCC / CB / SAA |
Combining world-class production clustering in the Greater Bay Area with strict German-standard quality verification workflows.
Refrigerant leakage is the leading failure vector in overseas water chillers. At our automated Guangzhou facility, 100% of refrigeration circuits undergo dry nitrogen pressurization up to 3.5 MPa, followed by robotic helium chamber mass spectrometry. This process detects micro-fissures down to 0.1 grams per year, eliminating container transit de-gassing risks.
From CNC laser stamping of structural stainless steel frames to in-house SMT PCB assembly and rotary injection moulding of UV-resistant casings, Dongda minimizes third-party vendor dependencies. This 85% internal component integration insulates global buyers against raw material bottlenecks and accelerates custom prototyping cycles from months to 14 days.
Every single batch undergoes full operational stress testing before palletization. Units operate under simulated 45°C (113°F) high-ambient conditions with dynamic heat loads to confirm pull-down curves, compressor current draw, thermal cut-off relay sensitivity, and high-pressure safety switch calibration.
Spanning modern automated facilities with over 200 dedicated production technicians, monthly outputs exceeding 600,000 units, and audited Tier-1 supply chains, we ensure your brand captures market demand with zero production bottlenecks.
Eliminating regulatory frictions across the European Union, North America, the United Kingdom, and the Asia-Pacific region.
Deploying high-voltage water-adjacent electrical appliances across the United States and Canada requires strict adherence to fire, shock, and thermal safety. Our cold plunge chillers are engineered with UL 60335-2-40 and CSA C22.2 harmonized safety standards, integrating 10mA Type-A Class-A GFCI cords, sealed double-insulated water chambers, and FCC Part 15 Class B electromagnetic interference filtering.
European shipments comply fully with Low Voltage Directive 2014/35/EU and Electromagnetic Compatibility Directive 2014/30/EU. We ensure full adherence to RoHS restricted hazardous substance thresholds and prepare REACH chemical compliance files for imported polymers, closed-cell EVA foam insulation, and marine silicon seals.
Procurement efficiency is governed by Harmonized System (HS) code classification and container space optimization. By designing stackable unibody profiles and utilizing HS Code 8418.69 (Other Refrigerating or Freezing Equipment), our logistics teams assist importers in navigating customs clearances, Section 301 tariff management, and optimizing high-cube 40HQ container packing densities (up to 120 full systems per container).
We supply B2B partners with complete after-sales support frameworks: 1%–2% complimentary high-wear spare parts (O-rings, water flow sensors, UV-C ballast modules, PCB control modules) packed inside each container, supplemented by bilingual technical service manuals, troubleshooting video repositories, and local warranty RMA coordination.
Clear, direct answers regarding technical engineering, private label customization, MOQ, and international logistics execution.
Thermal pull-down rate is determined by the chiller horsepower, water volume, ambient temperature, and tub insulation insulation value (R-value). For a standard 350-liter (92 gallon) insulated tub with an EVA thermal cover operating in a 25°C room, our 0.5HP chiller reaches 3°C in approximately 3.5 to 4 hours. Our 1.5HP commercial unit accomplishes this in under 90 minutes.
We implement a 3-layer anti-freezing safety algorithm: (1) An active fluid dynamic differential flow switch halts refrigeration if flow falls below 600 L/H; (2) An evaporator surface temperature sensor automatically cycles off the compressor when coil frost thresholds are approached; (3) The microcontroller features an anti-freeze circulation routine that continuously runs the pump if ambient water drops below 2°C.
We provide full-scope customization: bespoke powder-coated exterior metal housing colors, custom back-lit laser-etched brand logos, branded iOS/Android Tuya IoT smartphone applications, custom packaging with drop-tested honey-comb cartons, custom water inlet/outlet thread standards (NPT, BSP, or quick-release cam-locks), and customized user manuals with your brand identity.
Yes. Our premium water chillers incorporate reversible reverse-cycle heat pump valves. The system effortlessly toggles from chilling down to 2°C (35.6°F) to warming water up to 42°C (107.6°F) or 45°C. This allows single-tub contrast therapy regimes without requiring auxiliary resistive electric heating elements, maintaining high coefficient of performance (COP > 3.2).
Standard unbranded sample units are dispatched within 5 to 7 working days. For OEM private label customization, MOQ begins at 20 units per configuration. Production lead times for full 20GP/40HQ container volumes average 25 to 30 calendar days from engineering sign-off and deposit receipt.
Complete your brand inventory with our internationally certified cold plunge water chillers, multi-zone sauna blankets, and hydrotherapy solutions.
Compact residential cooling unit utilizing eco-safe R290 refrigerant, designed for quiet operation and easy balcony or patio installation.
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Robust mid-tier cooling unit engineered for small wellness studios and intensive home plunges with integrated filtration and rapid cooling loops.
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Ergonomic Velcro closure thermal blanket with multi-zone carbon fiber heating wires for full-coverage far-infrared hyperthermic therapy.
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Integrated wellness booth combining 660nm red light phototherapy with therapeutic saturated steam mist for deep skin hydration and muscle relief.
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Spacious two-person portable modular sauna enclosure equipped with localized low-EMF infrared panels and internal digital temperature controller.
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Dual-voltage 110V/220-240V industrial-grade chiller utilizing R32 refrigerant, featuring wide 2°C to 45°C precision thermal control and UV-C hygiene.
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Advanced independent 3-zone thermal control allowing segmented temperature calibration across upper body, waist, and lower extremities.
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Therapeutic sleeping mattress combining water-circulated thermal constancy with germanium stone layers for restorative all-night recovery.
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