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| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DHJF-8002W Horizontal |
| Instrument Type | Horizontal |
| Temperature Stability | ±2 °C |
| Operating Temperature Range | −80 °C to +10 °C |
| Bath Opening Diameter | Ø140 mm |
| Bath Volume | 2 L |
| External Dimensions | 410 W × 610 D × 495 H mm |
| Net Weight | 68 kg |
| Refrigerants | R404A / R23 |
| Cooling Capacity | 200 W at −40 °C, 120 W at −60 °C, 60 W at −80 °C |
| Magnetic Stirring Power | 50 W |
| Stirring Speed Range | 100–1000 rpm |
| Heating Protection | Dry-run prevention (heating models only) |
| Safety Protections | Delayed start, overcurrent, overtemperature |
| Power Supply | 220 V~, 50 Hz |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Brand | Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic Laboratory Refrigeration Equipment |
| Model | DL10-3000G |
| Cooling Capacity | 3000 W (at 25°C ambient, 15°C coolant) |
| Operating Temperature Range | –10°C to 25°C (max. setpoint ≤ ambient – 5°C) |
| Temperature Stability | ±2°C |
| Control Algorithm | PID |
| Refrigerant | R134a (CFC-free) |
| Pump Flow Rate | 16 L/min |
| Reservoir Volume | 30 L |
| Reservoir Material | SUS304 Stainless Steel |
| External Port | Rc 1/2 internal thread |
| Power Supply | 220–240 V~, 50 Hz |
| Rated Power | 2200 W |
| Rated Current | 11.7 A |
| Dimensions (W×D×H) | 495 × 760 × 860 mm |
| Net Weight | 108 kg |
| Ambient Operating Conditions | 5–35°C, ≤70% RH |
| Safety Protections | Compressor delay start, high-pressure, overload, and overcurrent protection |
| Temperature Sensor | Pt100 |
| Display | Digital temperature readout with integrated level and pressure indicators |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Equipment Type | Vertical |
| Temperature Stability | ±0.2 °C |
| Operating Temperature Range | −20 °C to 99 °C |
| Bath Opening Diameter | Ø210 mm |
| Heating Power | 1500 W |
| Bath Volume | 5 L |
| External Dimensions (W×D×H) | 385 mm × 560 mm × 735 mm |
| Net Weight | 55 kg |
| Refrigerant | R404A |
| Refrigeration Capacity | 570 W at 10 °C, 470 W at 0 °C, 385 W at −10 °C, 230 W at −20 °C |
| Circulation Pump Flow Rate | 20 L/min |
| Max. Pressure | 0.4 bar |
| Magnetic Stirring Power | 50 W |
| Stirring Speed Range | 100–1000 rpm |
| Input Power Supply | 220 V~, 50 Hz |
| Protection Functions | Dry-run prevention (heating), overtemperature, overcurrent, leakage current, thermal delay, and overheat safeguards |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Bath Material | 304 Stainless Steel |
| Max. Flask Capacity Supported | 2000 mL |
| External Circulation Port | Rc1/2 |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DHJF-8002W |
| Instrument Type | Horizontal |
| Temperature Uniformity | ±2 °C |
| Operating Temperature Range | −80 °C to +10 °C |
| Bath Opening Diameter | Ø140 mm |
| Bath Volume | 2 L |
| External Dimensions (W×D×H) | 410 mm × 610 mm × 495 mm |
| Net Weight | 68 kg |
| Refrigerants | R404A and R23 |
| Magnetic Stirring Power | 50 W |
| Stirring Speed Range | 100–1000 rpm |
| Cooling Capacity | 200 W at −40 °C, 120 W at −60 °C, 60 W at −80 °C |
| Heating Protection | Dry-run prevention (for heated variants) |
| Safety Protections | Delayed startup, overcurrent, and overtemperature protection |
| Power Supply | 220 V~, 50 Hz |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Bath Material | 304 Stainless Steel |
| Max Flask Capacity Supported | 500 mL |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Model | DLSB-5/20B |
| Cooling Capacity | 650 W at 10°C, 580 W at 0°C, 490 W at −10°C, 280 W at −20°C |
| Temperature Range | −20°C to +25°C (ambient ≤35°C) |
| Temperature Stability | ±2°C |
| Temperature Display Resolution | 0.1°C |
| Refrigerant | R404A (CFC-free, ozone-friendly) |
| Compressor | Embraco hermetic piston compressor |
| Condenser | Air-cooled finned-tube with oxygen-free copper coil |
| Evaporator | 304 stainless steel coiled tube immersed in reservoir |
| Circulating Pump | 304 stainless steel shielded pump, leak-proof at low temperatures |
| Reservoir Volume | 5 L |
| Flow Rate | 20 L/min |
| Max. Pressure | 0.4 bar |
| Power Supply | 220–240 V~, 50 Hz |
| Rated Power | 635 W |
| Protection | Delay start, overcurrent, overheat, grounding, high-pressure |
| Enclosure Rating | IP20 |
| Pollution Degree | Class II |
| Communication Interface | RS485, MODBUS RTU protocol |
| Safety Certification | CE compliant |
| Brand | The Great Wall |
|---|---|
| Model | DHJF-8005C |
| Type | Vertical |
| Temperature Range | −80 °C to +99 °C |
| Temperature Stability | ±0.2 °C |
| Display Resolution | 0.01 °C |
| Bath Volume | 5 L |
| Bath Opening Diameter | Ø210 mm |
| Heating Power | 1500 W |
| Cooling Capacity | 860 W at 90 °C, 410 W at 0 °C, 350 W at −40 °C, 260 W at −60 °C, 80 W at −80 °C |
| Refrigerants | R404A / R23 |
| Circulation Pump Power | 100 W |
| Flow Rate | 20 L/min |
| Max. Pressure | 0.4 bar |
| Magnetic Stirring Power | 50 W |
| Stirring Speed | 100–1000 rpm |
| External Dimensions (W×D×H) | 455×585×1025 mm |
| Net Weight | 100 kg |
| Power Supply | 220 V~, 50 Hz |
| Protection | Over-temperature, over-current, leakage, delay-start, thermal cutoff |
| Communication Interface | RS485 (MODBUS RTU) |
| Compliance | JB/T 4088 (heater), ISO/IEC 17025-aligned manufacturing environment |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Model | ZT-20-200-80 |
| Temperature Range | −30 °C to 200 °C |
| Temperature Stability | ±0.5 °C |
| Power Supply | 220–240 V~, 50 Hz |
| Total Power | 4.7 kW |
| Cooling Capacity | 1.7 kW @ 200 °C, 2.6 kW @ 10 °C, 1.1 kW @ −10 °C, 0.7 kW @ −20 °C, 0.3 kW @ −30 °C |
| Refrigerant | R22 |
| Bath Fluid Volume | 10 L |
| Heating Power | 3 kW |
| Pump Flow Rate | 30 L/min |
| Pump Pressure | 1 bar |
| Dimensions (W×D×H) | 580 × 825 × 1370 mm |
| Weight | 172 kg |
| [Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Vertical |
| Temperature Range | −5 to 99 °C |
| Temperature Stability | ±0.05 °C (display resolution) |
| Display Resolution | 0.01 °C |
| Bath Volume | 5 L |
| Bath Opening | 141 W × 120 D mm |
| Bath Depth | 145 mm |
| External Dimensions | 270 W × 490 D × 650 H mm |
| Net Weight | 32 kg |
| Circulation Pump Flow Rate | up to 10 L/min |
| Max Pump Pressure | 0.2 bar |
| Heating Power | 1.1 kW |
| Total Power Consumption | 1.5 kW |
| Refrigerant | R134a |
| Communication Interface | RS-485 (Modbus RTU protocol) |
| Bath Material | 06Cr19Ni10 (AISI 304 stainless steel) |
| Enclosure Material | Powder-coated cold-rolled steel |
| IP Rating | IP20 |
| Pollution Degree | 2 |
| Operating Ambient | 5–35 °C, ≤70% RH |
| Power Supply | 220–240 V~, 50 Hz] |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DHJF-8020 |
| Instrument Type | Vertical |
| Temperature Stability | ±0.5 °C |
| Operating Temperature Range | −80 °C to +99 °C |
| Bath Opening Diameter | Ø280 mm |
| Heating Power | 2000 W |
| Bath Capacity | Ø350 mm × 270 mm (depth) |
| External Dimensions | 760 W × 940 D × 1006 H mm |
| Net Weight | 200 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | HX-2015 |
| Price Range | USD 1,400–7,000 |
| Reservoir Volume | 15 L |
| Temperature Stability | ±0.05 °C |
| Operating Temperature Range | −20 to 99 °C |
| Cooling Capacity | 370–1200 W |
| Refrigerant | R404A |
| Flow Rate | 10 L/min |
| Opening Dimensions | 245 W × 365 D × 168 H mm |
| Heating Power | 1750 W |
| External Dimensions | 340 W × 480 D × 780 H mm |
| Weight | 48 kg |
| Power Supply | 220–240 V~, 50 Hz |
| Tank Material | 304 Stainless Steel |
| Compressor Type | Hermetic Air-Cooled (Imported from USA/France) |
| Pump Configuration | Dual-Impeller with Self-Priming Function |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Vertical |
| Temperature Stability | ±0.5 °C |
| Operating Temperature Range | −80 °C to +99 °C |
| Bath Opening Diameter | Ø280 mm |
| Bath Volume | 20 L |
| External Dimensions | 760 W × 940 D × 1006 H mm |
| Net Weight | 200 kg |
| Brand | Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | DL10-3000G |
| Price Range | USD 1,400–7,200 |
| Compressor | Copeland Scroll (Dual-Flex Design) |
| Condenser | Air-Cooled Finned-Tube with Oxygen-Free Copper Helical Tubes |
| Evaporator | 304 Stainless Steel Coil-in-Tank Type |
| Drier Filter | Danfoss DML Series (3A Molecular Sieve) |
| Circulation Pump | Imported High-Pressure Rotary Vane Pump (Adjustable Pressure) |
| Refrigerant | R134a (CFC-Free, ODP = 0) |
| Temperature Control Algorithm | PID |
| Temperature Stability | ±2 °C |
| Display | Digital (Pt100 Sensor) |
| Cooling Capacity | 3000 W (at 25 °C ambient, 15 °C coolant) |
| Minimum Operating Temperature (No Load) | −10 °C |
| Usable Temperature Range | −10 °C to (Ambient − 5) °C |
| Reservoir Volume | 30 L |
| Flow Rate | 16 L/min |
| System Pressure Range | 1–10 bar |
| Power Input | 220–240 V~, 50 Hz |
| Rated Power | 2200 W |
| Rated Current | 11.7 A |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Reservoir Material | SUS304 Stainless Steel |
| External Port | Rc 1/2 Internal Thread |
| Coolant Fill Opening | Ø60 mm |
| Dimensions (W×D×H) | 495 × 760 × 860 mm |
| Net Weight | 108 kg |
| Safety Protections | Compressor Delay Start, High-Pressure Cut-off, Overload & Overcurrent Protection |
| Dual-Stage Filtration | At Fill Port & Reservoir Outlet |
| Level Indicator | Transparent Sight Tube |
| Pressure Gauge | Front-Mounted Analog Dial |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | RJHS-2020 |
| Price Range | USD 1,400 – 7,000 |
| Operating Temperature Range | −10 °C to 20 °C |
| Minimum Achievable Temperature (No Load) | −10 °C |
| Ultimate Vacuum Pressure | 50 mbar |
| Ambient Temperature Limit | ≤25 °C |
| Max. Relative Humidity | ≤60% RH |
| Power Supply | 220–240 V~, 50 Hz |
| Temperature Display | Digital LED |
| Pumping Speed | 25 L/min |
| Total Power Consumption | 545 W |
| Input Current | 2.5 A |
| Dimensions (W×D×H) | 320 × 450 × 570 mm |
| Net Weight | 61 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DHJF-1010 |
| Price Range | USD 7,000–14,000 |
| Temperature Range | −100 °C to −60 °C |
| Ambient Operating Temperature | 5–25 °C |
| Temperature Stability | ±2 °C |
| Power Supply | 3-phase, 380 V, 50 Hz |
| Reservoir Capacity | 10 L |
| Reservoir Dimensions | Φ250 mm × 250 mm (H) |
| Opening Diameter | Φ210 mm |
| Cooling Capacity | 160 W at −60 °C / 70 W at −80 °C / 40 W at −100 °C |
| Max. Flask Size Supported | 3000 mL |
| Total Power Consumption | 2050 W |
| Housing Material | Cold-rolled steel with electrostatic powder coating |
| External Dimensions (L×W×H) | 780 × 670 × 1085 mm |
| Net Weight | 150 kg |
| Circulation System | 304 stainless steel + polymer-based corrosion-resistant components |
| Low-Temp Operation Limitation | No circulation below −100 °C |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DHJF-4010 |
| Instrument Type | Vertical |
| Temperature Stability | ±0.2 °C |
| Temperature Range (Heat Transfer Fluid Output) | −40 °C to +99 °C |
| Bath Opening Diameter | Ø210 mm |
| Bath Volume | 10 L |
| External Dimensions (W×D×H) | 485 mm × 590 mm × 935 mm |
| Net Weight | 84 kg |
| Key | Brand: The Great Wall |
|---|---|
| Model | DHJF-3020 |
| Configuration | Vertical Benchtop Unit |
| Temperature Range | −30 °C to 99 °C |
| Temperature Stability | ±0.5 °C |
| Integrated Feature | Built-in Magnetic Stirrer |
| Cooling/Heating Medium | Ethanol/Water or Similar Low-Freezing-Point Fluid |
| Safety Protection | Dry-run Prevention (for heating models) |
| Compliance | Designed for GLP-compliant laboratory environments |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Equipment Type | Vertical Cryogenic Thermostat |
| Temperature Range | −100 °C to −60 °C |
| Temperature Stability | ±2 °C |
| Temperature Uniformity | ±2 °C |
| Bath Opening Diameter | Ø210 mm |
| Bath Volume | 5 L |
| External Dimensions | 630 W × 795 D × 790 H mm |
| Net Weight | 125 kg |
| Circulating Medium | Mixed Refrigerant |
| Stirring Power | 50 W |
| Stirring Speed | 100–1000 rpm |
| Cooling Capacity | 110 W at −60 °C / 50 W at −80 °C / 20 W at −100 °C |
| Rated Power | 820 W |
| Protection Features | Delayed Start, Overcurrent & Overtemperature Protection |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Power Supply | 220–240 V~, 50 Hz |
| Bath Material | 304 Stainless Steel |
| Max. Flask Capacity | ≤2000 mL |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | HX-1005 |
| Price Range | USD 1,400–7,200 |
| Reservoir Volume | 5 L |
| Temperature Stability | ±0.05 °C |
| Operating Temperature Range | –5 to 99 °C |
| Refrigeration Capacity | 190–375 W |
| Heating Power | 1200 W |
| Circulation Flow Rate | 10 L/min |
| Pump Type | Dual-impeller, self-priming |
| Compressor | Hermetic air-cooled unit (imported from USA/France) |
| Refrigerant | R134a |
| Bath Material | 304 Stainless Steel |
| Display | Digital LED |
| Control Method | PID temperature control |
| Power Supply | 220–240 V~, 50 Hz |
| External Dimensions (W×D×H) | 250 × 465 × 650 mm |
| Bath Opening (W×D×H) | 170 × 360 × 145 mm |
| Net Weight | 32 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | HX-2015 |
| Instrument Type | Vertical |
| Temperature Stability | ±0.2 °C |
| Temperature Uniformity | Excellent |
| Setpoint Resolution | 0.1 °C |
| Working Distance | 1 m |
| Maximum Operating Temperature | 99 °C |
| Bath Opening | 180 W × 130 D mm |
| Heating Power | 1600 W |
| Bath Volume | 15 L |
| Net Weight | 48 kg |
| External Dimensions | 350 W × 510 D × 780 H mm |
| Compatible Media | Water, Silicone Oil |
| Refrigerant | R404A |
| Pump Flow Rate | 10 L/min (max) |
| Pump Pressure | 0.2 bar (max) |
| Cooling Range | –20 °C to 99 °C |
| Display | Digital LED |
| Control Method | PID |
| Power Supply | 220–240 V~, 50 Hz |
| Total Power Consumption | 2.1 kW |
| Protection Class | IP20 |
| Pollution Degree | 2 |
| Ambient Operating Temperature | 5–35 °C |
| Ambient Humidity | ≤70 % RH |
| Communication Interface | RS485 |
| Housing Material | Powder-Coated Cold-Rolled Steel |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DHJF-4005 |
| Price Range | USD 1,400–7,200 |
| Temperature Range | −40 °C to +99 °C |
| Temperature Stability | ±0.2 °C |
| Bath Volume | 5 L |
| Bath Dimensions (Ø × H) | 250 mm × 130 mm |
| Opening Diameter | 210 mm |
| Max Flask Capacity | 2000 mL |
| Heating Power | 1500 W |
| Rated Flow Rate | 20 L/min |
| Max Pressure | 0.4 bar |
| Ambient Operating Temp | 5–25 °C |
| Power Supply | 220–240 V~, 50 Hz |
| Cooling Capacity | 1000 W at 10 °C / 450 W at −20 °C / 40 W at −40 °C |
| Refrigerant | R404A (high-temp stage) & R23 (low-temp stage) |
| Total Power Consumption | 2450 W |
| Housing Material | Cold-rolled steel with electrostatic epoxy coating |
| External Dimensions (W×D×H) | 400 mm × 535 mm × 790 mm |
| Net Weight | 56 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | HX-1005 |
| Price Range | USD 1,400–7,000 |
| Reservoir Volume | 5 L |
| Temperature Stability | ±0.05 °C |
| Operating Temperature Range | −5 to 99 °C |
| Refrigeration Capacity | 190–375 W |
| Refrigerant | R134a |
| Flow Rate | 10 L/min |
| Opening Dimensions | 170 W × 360 D × 145 H mm |
| Heating Power | 1200 W |
| External Dimensions | 250 W × 465 D × 650 H mm |
| Net Weight | 32 kg |
| Power Supply | 220–240 V~, 50 Hz |
| Tank Material | 304 Stainless Steel |
| Compressor Type | Hermetic Air-Cooled (Imported from USA/France) |
| Pump Configuration | Dual-Impeller with Self-Priming Function |
| Temperature Control Method | PID Algorithm |
| Display | Digital LED |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Vertical |
| Temperature Setting Accuracy | ±1.5 °C |
| Bath Volume | 1 L |
| Circulating Medium | Ethanol |
| Sealing System | Dual-Seal (PTFE + FKM) |
| Rotation Speed Control | Digital LCD Interface with Knob |
| Lifting Stroke | 150 mm |
| Lift Mechanism | Motorized |
| Bath Angle Adjustment Range | 15°–45° |
| Condenser Type | Double-Coil Spiral |
| Heating Method | Bottom-Mounted Hidden Heater (Electric, Immersion-Free) |
| Bath–Heater Isolation | Yes |
| Optional Accessory | Insulating Bath Cover |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Equipment Type | Vertical |
| Temperature Stability | ±2 °C |
| External Dimensions (W×D×H) | 710 mm × 1230 mm × 1380 mm |
| Minimum Operating Temperature | −80 °C |
| System Configuration | Closed-loop Circulation |
| Safety Protections | High-pressure cut-off, leakage current protection, compressor time-delay start, thermal overload protection, overcurrent protection, phase-sequence monitoring |
| Liquid Overfill Protection | Automatic discharge mechanism |
| Key | Brand: The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Equipment Type | Vertical |
| Temperature Range | −30 °C to 99 °C |
| Temperature Stability | ±0.5 °C |
| Stirring Function | Built-in Magnetic Stirrer (Dual-Position: Bath & Reaction Vessel) |
| Lid | Adjustable Telescopic Cover |
| Accessories | Universal Mounting Rack for Burettes, Probes, and Sensors |
| Safety | Dry-run Protection (Heating Models Only) |
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