Introduction to GRAD VRV/VRF Multi-Split Air Conditioning SystemsGRAD VRV (Variable Refrigerant Volume) / VRF (Variable Refrigerant Flow) systems are advanced, high-efficiency HVAC solutions designed for commercial and residential applications, including office buildings, hotels, and large spaces…
VRV/VRF Air Conditioning SystemMulti-split air conditioning systems (VRF/VRV systems) are highly efficient air conditioning systems widely used in commercial buildings, office buildings, hotels, and other locations. The following is a detailed introduction to VRV/VRF systems:GRAD VRV/VRF system…
Water Cooled Central Air Conditioning SystemWe offer professional water-cooled central air conditioning customized system services. We can conduct preliminary system design based on the specific needs of each project, ensuring the integrity and efficiency of the entire water-cooling system. Our…
Air-Cooled Central Air Conditioning System Customized ServiceProduct Description: We provide professional air-cooled central air conditioning system customized services, dedicated to creating efficient, energy-saving, and comfortable air conditioning solutions for our clients. Our services include…
Hospital epidemic prevention air conditioning systemThe epidemic prevention air conditioning system of GRAD Hospital is designed in response to the huge demand for epidemic prevention ventilation and air conditioning in the three major systems of new construction, renovation and maintenance.…
Hospital epidemic prevention air conditioning systemThe epidemic prevention air conditioning system of GRAD Hospital is designed in response to the huge demand for epidemic prevention ventilation and air conditioning in the three major systems of new construction, renovation and maintenance.…
Chiller Fan Coil SystemComprehensive school buildings include teaching buildings, libraries, office buildings, meeting rooms, laboratories, multimedia rooms, computer network centers, teacher and student activity centers, gymnasiums, etc. They have the following characteristics in terms of…
High Efficiency Air Cooled Screw Chiller Heat PumpAir-cooled screw type cold (hot) water unit is based on air as a cold (hot) source, water as a refrigerant, it can be cooling and heating, and can run all year round, with environmental protection, energy saving, comfortable, stable characteristics.…
Central Air Heat PumpProduct introduction：GRAD Air-cooled modular hot and cold water units do not require auxiliary equipment such as cooling water pumps and cooling towers, which can save a lot of space and installation costs. Modular design allows for free combination based on the size of the…
Air Source Heat Pump PriceAir-cooled modular cold (hot) water unit● The use of electronic expansion valve intelligent adjustment of refrigerant flow, more accurate control, more reliable unit operation. ● The use of environmental protection R410A refrigerant, wide operating range, refrigeration…
Air Source Heat Pump Installation Product introduction：Air source heat pump is a kind of energy-saving device that can make the heat flow from the low heat source air to the high heat source.The GRAD air source heat pump unit is equipped with a self-developed NB-iot Internet of Things remote…
Residential Heat PumpResidential Heat Pump is a kind of energy-saving device that can make the heat flow from the low heat source air to the high heat source.The GRAD air source heat pump unit adopts a modular design. The entire unit system is easy to expand and can be combined with 16 modules. The…
Heat Pump Air ConditionerHeat Pump Air Conditioneris equipped with a self-developed NB-iot Internet of Things remote intelligent control module. It can be operated via a mobile phone APP, eliminating the need for dedicated personnel to stand by. It offers fault early warning prompts and online…
Air Source Heat PumpProduct introduction：Air source heat pump is a kind of energy-saving device that can make the heat flow from the low heat source air to the high heat source.GRAD air source heat pump/chiller has accumulated nearly two decades of engineering practical application experience,…
Geothermal Heating And CoolingGround source heat pump units mainly use groundwater or soil below 100 meters as the exchange medium to achieve energy-saving operation of the main unit, and their energy-saving rate can reach 30% to 40%. All these units are equipped with original imported compressors…
Hydro Water ChillerHydro Water Chiller is a unit adopting the cooling tower cooling refrigerant circulatory system to exchange heat and then to get the air conditioning and process chilled water. It works together with the terminal devices to complete the whole air conditioning system.Test ability…
Industrial ChillerProduct IntroductionIndustrial Chiller is the use of electricity as a power source, freon refrigerant in the evaporator refrigerant evaporation, freon evaporation wet steam compressor compressed into high temperature and high pressure gas, the water cooling condenser is condensed…
Water Cooled Screw ChillerWater Cooled Screw Chiller adopts the semi-closed double-screw compressor, and uses the single circuit or multi-circuit design.Its parts are easy to maintain.The protection and control facilities are placed in the control cabinet and the running state of the host is…
Water Cooled Centrifugal ChillerWater Cooled Centrifugal Chiller is the use of electricity as a power source, freon refrigerant in the evaporator refrigerant evaporation, freon evaporation wet steam compressor compressed into high temperature and high pressure gas, the water cooling condenser is…
Industrial Water ChillerIndustrial Water Chiller is the use of electricity as a power source, freon refrigerant in the evaporator refrigerant evaporation, freon evaporation wet steam compressor compressed into high temperature and high pressure gas, the water cooling condenser is condensed into a…
Water Cooled Water ChillerWater Cooled Water Chiller adopts the semi-closed double-screw compressor, and uses the single circuit or multi-circuit design. The protection and control facilities are placed in the control cabinet and the running state of the host is displayed on the computer monitor.…
The water-cooled screw chiller adopts the semi-closed double-screw compressor, and uses the single circuit or multi-circuit design. The protection and control facilities are placed in the control cabinet and the running state of the host is displayed on the computer monitor. All units are assembled…
High Efficiency Air Cooled Screw Chiller Heat PumpAir-cooled screw type cold (hot) water unit is based on air as a cold (hot) source, water as a refrigerant, it can be cooling and heating, and can run all year round, with environmental protection, energy saving, comfortable, stable characteristics.…
Air Cooled Water ChillerAir Cooled Water Chiller is based on air as a cold (hot) source, water as a refrigerant, it can be cooling and heating, and can run all year round, with environmental protection, energy saving, comfortable, stable characteristics.The GRAD Air source heat pump unit is…
Air Cooled ChillerAir-cooled chiller is based on air as a cold (hot) source, water as a refrigerant, it can be cooling and heating, and can run all year round, with environmental protection, energy saving, comfortable, stable characteristics.The GRAD Air source heat pump unit is equipped with a…
Air Cooled Screw ChillerProduct introduction The GRAD Air Cooled Screw Chiller is equipped with a self-developed NB-iot Internet of Things remote intelligent control module. It can be operated via a mobile phone APP and does not require dedicated personnel to stand by. It also features fault…
Air Cooled Air ConditionerAir Cooled Air Conditioner is a kind of energy-saving device that can make the heat flow from the low heat source air to the high heat source.Prouuct Features:1.Easy to install and saving space:it needs no cooling pump or cooling tower which can save a lot installation and…
Air Chiller UnitThe GRAD Air Chiller Unit is equipped with a self-developed NB-iot Internet of Things remote intelligent control module. It can be operated via a mobile phone APP, eliminating the need for dedicated personnel to stand by. It offers fault early warning prompts and online diagnosis.…
Air ChillerProduct introductionAir Chiller is a kind of energy-saving device that can make the heat flow from the low heat source air to the high heat source.Features:1.Easy to install and saving space:it needs no cooling pump or cooling tower which can save a lot installation and material cost. It…
Air Cooled Industrial ChillerProduct introduction：Air Cooled Industrial Chiller is a kind of energy-saving device that can make the heat flow from the low heat source air to the high heat source.The GRAD Air Cooled Industrial Chiller adopts a modular design. The entire unit system is easy to expand…
Central ac Air HandlerCore technologyThe GRAD combined air handling unit adopts the national patented technology of mortise and tenon double labyrinth forced bolt connection between the panels, and the air leakage rate is only 1/15 of the national standard. Leading cold bridge breaking technology…
AHU AirCore technologyThe GRAD combined air handling unit adopts the national patented technology of mortise and tenon double labyrinth forced bolt connection between the panels, and the air leakage rate is only 1/15 of the national standard. Leading cold bridge breaking technology completely…
Energy-saving Air ConditionerOperational principleThrough a combination of water cooling, air cooling, and compressor working methods, the external unit first uses wet curtain evaporative condensation technology to cool the circulating water. After the water temperature drops to room temperature…
Industrial Water-cooled Evaporative Air ConditionerComponent PartsThe evaporative energy-saving air conditioning unit consists of a compressor, condenser, expansion valve, evaporator, wet curtain, water tank, water pump and other parts.DiagramOperational principleThrough a combination of water…
Unit AHUOverview GRAD covers vertical (air volume from 2000 ~ 60000m3 /h), horizontal (wind increased from 2000 ~ 60000m3/h), and ceiling-type (air volume from 1000 ~ 16000m3/h) three series of air-handling unit to meet customers’ need of cooling, heating, humidification, dehumidification and so on…
Horizontal Jet Wall-mounted Energy-saving Air Conditioner UnitOperational principleThrough a combination of water cooling, air cooling, and compressor working methods, the external unit first uses wet curtain evaporative condensation technology to cool the circulating water. After the water …
Vertical AHUGRAD covers vertical (air volume from 2000 ~ 60000m3 /h), horizontal (wind increased from 2000 ~ 60000m3/h), and ceiling-type (air volume from 1000 ~ 16000m3/h) three series of air-handling unit to meet customers’ need of cooling, heating, humidification, dehumidification and so on. It…
Air Handler Unit CommercialOverview GRAD covers vertical (air volume from 2000 ~ 60000m3 /h), horizontal (wind increased from 2000 ~ 60000m3/h), and ceiling-type (air volume from 1000 ~ 16000m3/h) three series of air-handling unit to meet customers’ need of cooling, heating, humidification,…
Air Con Fan Coil UnitIntroductionGRAD Air Con Fan Coil Unit mainly consists of centrifugal fan and heat exchanger etc., which is one of the terminals in the central air conditioning system. It has been widely applied in air conditioning occasions of civil or industrial buildings with large space or…
Advanced Air Fan Coil UnitsFCU productGRAD FCU mainly consists of centrifugal fan and heat exchanger etc., which is one of the terminals in the central air conditioning system. It has been widely applied in air conditioning occasions of civil or industrial buildings with large space or of multiple…
2 Pipe Fan Coil UnitFCU product GRAD FCU mainly consists of centrifugal fan and heat exchanger etc., which is one of the terminals in the central air conditioning system. It has been widely applied in air conditioning occasions of civil or industrial buildings with large space or of multiple rooms…
Fan Coil PriceFCU product GRAD FCU mainly consists of centrifugal fan and heat exchanger etc., which is one of the terminals in the central air conditioning system. It has been widely applied in air conditioning occasions of civil or industrial buildings with large space or of multiple rooms like…
Fan Coil Unit HeaterIntroduction The GRAD fan coil unit, with a national patent for appearance, features a compact and sturdy structure. The entire unit is lightweight and aesthetically pleasing, with a thin body design that can effectively save indoor space. The surface cooler adopts high-quality…
Ceiling Mounted Fan Coil UnitFCU product GRAD Ceiling Mounted Fan Coil Unit mainly consists of centrifugal fan and heat exchanger etc., which is one of the terminals in the central air conditioning system. It has been widely applied in air conditioning occasions of civil or industrial buildings…
Floor Mounted Fan Coil UnitFCU product GRAD FCU mainly consists of centrifugal fan and heat exchanger etc., which is one of the terminals in the central air conditioning system. It has been widely applied in air conditioning occasions of civil or industrial buildings with large space or of multiple…
International Fan Coil FCU product GRAD FCU mainly consists of centrifugal fan and heat exchanger etc., which is one of the terminals in the central air conditioning system. It has been widely applied in air conditioning occasions of civil or industrial buildings with large space or of multiple…
Residential Cooling TowerCooling tower is mainly applied to air conditioning cooling system, freezing series, injestion molding, leather, power generation, and steam turbine, aluminum profile processing, air compressor, industrial cooling tower, cooling for industrial production or refrigeration…
Cooling Tower TreatmentCooling tower is mainly applied to air conditioning cooling system, freezing series, injestion molding, leather, power generation, and steam turbine, aluminum profile processing, air compressor, industrial cooling tower, cooling for industrial production or refrigeration…
Cooling Tower SolutionsCooling water tower principle and application:Module of closed cooling tower is red copper coil with high heat transfer efficiency, allows working fluid (purified water or other liquid) pipeline pass through, makes heat exchange with air through fan to complete at a time so…
Cooling TowerThe main functions of cooling towers are as followsCooling: The cooling tower achieves heat dissipation by spraying high-temperature water or other liquids onto the packing layer, utilizing the heat exchange between water and air, thereby reducing the liquid's temperature to the set…
Closed Loop Cooling TowerClosed Loop Cooling Tower principle and application:Module of closed cooling tower is red copper coil with high heat transfer efficiency, allows working fluid (purified water or other liquid) pipeline pass through, makes heat exchange with air through fan to complete at a…
Closed Circuit Cooling TowerWorking principle The cold fluid flows through the coiled pipe in the closed cooling tower to conduct heat to the wall of coiled pipe; the fan at top of the tower conducts air-pumping operation. The outer-circulation spray water and refresh air taken in by the fan fully…
Commercial Cooling TowerThe main functions of Commercial cooling towers are as followsCooling: The cooling tower achieves heat dissipation by spraying high-temperature water or other liquids onto the packing layer, utilizing the heat exchange between water and air, thereby reducing the liquid's…
Cooling Tower Air ConditioningGRAD Core technologyThe spray water tray is made by one-time molding process, with no seams as a whole, eliminating dripping and splashing water at the water tray. The frame is formed by one-time bending of hot-dip galvanized steel plates, with C-shaped groove…
GRP PipesIntroductionGlass Reinforced Plastic (GRP) pipes are manufactured using the process of Continuance Filament Winding (CFW). Our range of GRP pipe products offer structural strengths and corrosion resistance for optimum performance within high pressure applications. FRP is lightweight,…
FRP PipesIntroductionThe FRP pipes produced by GRAD group is divided into two types: Fiber wind FRP craft tube and Fiber wind FRP nip pipe.Fiber wind FRP pipe is the main product which develops the market successful, it mainly uses in the petroleum, the chemical industry,the electric power,the…
Glass Fiber Reinforced Plastic PipeGlass Fiber Reinforced Plastic Pipe are manufactured using the process of Continuance Filament Winding (CFW). Our range of GRP pipe products offer structural strengths and corrosion resistance for optimum performance within high pressure applications. FRP is…
Glass Reinforced Plastic PipeGlass Reinforced Plastic (GRP) pipes are manufactured using the process of Continuance Filament Winding (CFW). Our range of GRP pipe products offer structural strengths and corrosion resistance for optimum performance within high pressure applications. FRP is…
FRP Fiberglass Reinforced Plastic PipeFRP Fiberglass Reinforced Plastic Pipe are manufactured using the process of Continuance Filament Winding (CFW). Our range of GRP pipe products offer structural strengths and corrosion resistance for optimum performance within high pressure applications. FRP is…
Product DescriptionFRP sand-filling pipe is the result of years of successful manufacturing experience and scientific research and development of GRAD Group. It is a representative of reliability, safety and economy, mainly used in buried pipes and long-distance pipelines. It has the…
FRP Piping Systems are manufactured using the process of Continuance Filament Winding (CFW). Our range of GRP pipe products offer structural strengths and corrosion resistance for optimum performance within high pressure applications. FRP is lightweight, extremely strong, easy to install, and…
Water Storage TanksAdvantages of Smc glass water tank productsSMC modular water tanks are a new type of water tank widely adopted internationally at present. Their unique performance has completely solved the problems of heavy weight and easy seepage of concrete water tanks, as well as the anti-…
Glass Reinforced Plastic Water TanksIntroductionThe FRP combination water tank produced by GRAD meets the national standards.The water quality test and toxicology test were carried out by the provincial health and epidemic prevention station.The results showed that no toxic and banned compounds…
Metal Water Storage Tanks For SaleIntroductionThe galvanized steel water tank is a new type of water tank designed and manufactured by GRAD.The manufacture and installation of this product are not affected by civil construction,no welding equipment,one-time stretch forming,beautiful and…
Steel Water Tanks PricesStainless steel water tanks refer to water tanks made from stainless steel plates through processes such as welding and assembly. Most stainless steel water tanks are made of stainless steel plates of materials such as 304, 316L, and 444, which are formed through die…
Water Storage TanksThe FRP water tank is assembled by FRP molded panel,sealing material,metal structure and supporting system.It can be spliced according to the needs of customers.The highest recommended is 3M or less,If it is more 3M high ,it needs special design.If the original water tank needs…
Water TankIntroductionWater tanks are classified into six types based on their materials: fiberglass reinforced plastic (FRP) water tanks, stainless steel water tanks, stainless steel inner tank FRP water tanks, seawater FRP water tanks, enamel water tanks, and galvanized steel plate water tanks.…
SS Water TankIntroduction of SS Water TankSS Water Tank(Stainless steel water tanks)refer to water tanks made from stainless steel plates through processes such as welding and assembly. Most stainless steel water tanks are made of stainless steel plates of materials such as 304, 316L, and 444,…
Stainless Steel Tank For SaleStainless steel Tank IntroductionStainless steel water tanks refer to water tanks made from stainless steel plates through processes such as welding and assembly. Most stainless steel water tanks are made of stainless steel plates of materials such as 304, 316L, and 444…
Introduction to GRAD VRV/VRF Multi-Split Air Conditioning SystemsGRAD VRV (Variable Refrigerant Volume) / VRF (Variable Refrigerant Flow) systems are advanced, high-efficiency HVAC solutions designed for commercial and residential applications, including office buildings, hotels, and large spaces…
VRV/VRF Air Conditioning SystemMulti-split air conditioning systems (VRF/VRV systems) are highly efficient air conditioning systems widely used in commercial buildings, office buildings, hotels, and other locations. The following is a detailed introduction to VRV/VRF systems:GRAD VRV/VRF system…
Water Cooled Central Air Conditioning SystemWe offer professional water-cooled central air conditioning customized system services. We can conduct preliminary system design based on the specific needs of each project, ensuring the integrity and efficiency of the entire water-cooling system. Our…
Air-Cooled Central Air Conditioning System Customized ServiceProduct Description: We provide professional air-cooled central air conditioning system customized services, dedicated to creating efficient, energy-saving, and comfortable air conditioning solutions for our clients. Our services include…
Hospital epidemic prevention air conditioning systemThe epidemic prevention air conditioning system of GRAD Hospital is designed in response to the huge demand for epidemic prevention ventilation and air conditioning in the three major systems of new construction, renovation and maintenance.…
Hospital epidemic prevention air conditioning systemThe epidemic prevention air conditioning system of GRAD Hospital is designed in response to the huge demand for epidemic prevention ventilation and air conditioning in the three major systems of new construction, renovation and maintenance.…
Chiller Fan Coil SystemComprehensive school buildings include teaching buildings, libraries, office buildings, meeting rooms, laboratories, multimedia rooms, computer network centers, teacher and student activity centers, gymnasiums, etc. They have the following characteristics in terms of…
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Shandong GRAD Group Co.,Ltd.
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1993
year
Established in
1000
+
Patents
100
+
Exporting Countries
1500
+
Employees
30+ years brand builder in HVAC industry.
Free sample based on specific project.
One-stop solution provider for HVAC system.
Professional central air conditioning products supplier.
Customized design is avaliable for special applications.
Free airport pick-up and meals during your visit GRAD.
Philippines and Thailand office is set up to better serve local markets. There are agents for after sales service in USA, Cambodia, Pakistan, Uzbekistan, Turkmenistan, Rwanda, Mexico, Peru etc.
The 15th National Geothermal Conference and National Geothermal Energy & Ground Source Heat Pump Exhibition 2025 was held recently. Grad made a significant appearance by showcasing its ecosystem solutions for the geothermal field and won the 2025 "Geothermal+" Outstanding Brand · Product Award
Recently, a professional inspection team from the authoritative international refrigeration technology organization—the Cooling Technology Institute (CTI) of the United States—visited Grad Group to conduct a rigorous on-site inspection of the cooling tower equipment manufactured by the Group.During
On July 16th, the re-election meeting of the Composite Materials Winding Professional Committee was successfully held in Shanshui Licheng, Korla, Xinjiang. Leaders including Meng Yijie, Secretary-General of the China Composites Industry Association, and Deputy Secretary-General Lu Hongping, along
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