CN209149240U - A kind of server radiating system that contact is cooling - Google Patents
A kind of server radiating system that contact is cooling Download PDFInfo
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- CN209149240U CN209149240U CN201822090482.0U CN201822090482U CN209149240U CN 209149240 U CN209149240 U CN 209149240U CN 201822090482 U CN201822090482 U CN 201822090482U CN 209149240 U CN209149240 U CN 209149240U
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Abstract
The utility model discloses a kind of cooling server radiating systems of contact, including liquid cooling system and heat-exchange system, liquid cooling system is using the cooling server internal heat generation device of coolant liquid, heat-exchange system is mainly by heat exchanger, compressor, condenser, delivery pump and expansion valve are sequentially connected interior the first circuit for having heat transferring medium to circulate of composition, liquid cooling system is connected to form the interior second servo loop for having coolant liquid to circulate by heat exchanger and heat-exchange system, dividing wall type heat exchange is carried out with refrigerant in heat exchanger with the coolant liquid after heating device heat exchange in liquid cooling system, heat-exchange system further includes the first port valve and the second port valve, first port valve is in parallel with delivery pump by the first connecting line, second port valve passes through the second connecting line and compressor parallel.The utility model liquid cooling system can take away all heats in high power server using the cooling heating device of coolant liquid, and the utility model is controlled to adjust only for a critical-temperature, is simplified structure, is reduced construction cost.
Description
Technical field
The utility model relates to a kind of server or data center machine room cooling system more particularly to a kind of contact are cooling
Server radiating system.
Background technique
The modern life be unable to do without data, but with the growth of data traffic, a large amount of construction of data center, and people are passing through
While data create a finer world, the resource and electricity needs growing to data center will be faced.
The electricity that one large-scale data center uses is equivalent to the total electricity of a small city.Wherein for server power supply and
Cooling required electric energy just accounts for the 40% of data center's total operating cost, and therefore, the energy inefficiency problem of data center is not allowed
Ignore.Meanwhile the construction of data center needs the problems such as consideration is including addressing, local temperature, green energy resource and power supply-distribution system.
Traditional data center utilizes the mode of air cooling system, but air cooling system efficiency is relatively low, directly radiates by wind.From cooling angle
It sees, main energy consumption results from compressor, indoor fan, air-cooling chamber external condenser.It is arranged and is concentrated due to outdoor unit, when summer outside room
When machine is all turned on, localized heat packing phenomenon is obvious, can reduce refrigerating efficiency, influence using effect.In order to change this status,
Liquid cooled server and its cooling system come into being, the basic principle is that: liquid heat transferring medium is passed through with liquid cooling structure
In server, the heat of heater element main in server is taken away by heat exchange.Compared to traditional server, liquid cooling service
Device can take away heat nearby, not only have good energy-saving effect, can also reduce server by improving power density
Size；In addition, noise can also be reduced using liquid cooled server, it is also easier to realize the recycling of thermal energy.
By the combination of liquid cooled server cooling system and other cooling systems, the heat dissipation effect of data center can be effectively improved
Fruit, and the PUE value of data center is reduced, such cooling system is gradually widely used.It is at present to take cooling plate type liquid cooling more
Server system and air cooling system in conjunction with mode reduce the PUE of data center, realize the purpose of energy-saving and emission-reduction.The system
Cooling plate type liquid cooled server system is made of multiple servers, is taken away by the coolant liquid in plate circuit with heater element mediate contact
The heat of heater element；Air cooling system carries out supplement heat dissipation to heat unabsorbed in liquid cooling system, and air cooling system generally comprises
Evaporator, the cold side of evaporator fan and dividing wall type heat exchanger, compressor, condenser, volume control device, heat transferring medium pump,
Temperature-detecting device and multiple valves etc. that route is adjusted according to control device instruction.Such cooling system can basis
Outdoor environment temperature controls component each in air cooling system by the opening and closing of each valve, while compressor is in different temperatures area
Between Duan Kaiqi, in air cooling system heat transferring medium carry out pressurized treatments, the exchange capability of heat of heat radiation system.
But there is following defects for this cooling plate type liquid cooled server system and the mode of air cooling system combination heat dissipation:
(1) in order to reach certain heat dissipation effect, in whole year compressor open time it is longer, system energy consumption still compared with
Greatly.
(2) since the open and close to each component of cooling system in each temperature range section suffers from different setting requirements, because
And causing system structure complicated, manufacturing cost is high.
Utility model content
That the purpose of this utility model is to provide a kind of structures is simple, manufacturing cost is low, the lower contact of energy consumption is cooling
Server radiating system.
The purpose of this utility model is realized by the following technical solutions: a kind of server radiating system that contact is cooling
System, it includes liquid cooling system and heat-exchange system, it is characterised in that: the liquid cooling system is using coolant liquid to server internal heat generation device
Part is cooled down, and the heat-exchange system is mainly sequentially connected group by heat exchanger, compressor, condenser, delivery pump and expansion valve
There is the first circuit that heat transferring medium circulates in, the liquid cooling system is connected to form interior by heat exchanger and heat-exchange system
Have the second servo loop that coolant liquid circulates, in liquid cooling system with heating device heat exchange after coolant liquid in heat exchanger with system
Cryogen carries out dividing wall type heat exchange, and the heat-exchange system further includes the first port valve and the second port valve, and first port valve passes through the
One connecting line is in parallel with the delivery pump, and second port valve passes through the second connecting line and the compressor parallel.
The liquid cooling system of the utility model uses the type of cooling of the cooling heating device of coolant liquid, than existing wind-cooling heat dissipating
Exchange capability of heat it is stronger, all heats in high power server can be taken away, it is therefore not necessary to add other cooling systems come
The problem of after-heat is taken away in settlement server, the utility model only needs to consider the heat transfer problem of coolant liquid, only for one
A critical-temperature is controlled to adjust, so, the structure of cooling system is simplified, the construction cost of system is reduced；And
And in the utility model liquid cooling system coolant liquid cooling temperature it is higher, even if the case where outdoor environment temperature is up to 35 DEG C
Under, but since heat transferring medium and outdoor environment are there are biggish heat transfer temperature difference, critical-temperature is higher, therefore does not need starting compression
Machine can effectively reduce energy consumption.
In order to realize intelligent automation control, the cooling server radiating system of contact described in the utility model further includes
Control system, the pressure-detecting device and system for detecting temperature for entering the pressure after delivery pump for detecting coolant liquid, the pressure
Force checking device be set to delivery pump inlet pipeline on and it is in parallel with first port valve, the control system respectively with pressure
Detection device, system for detecting temperature, delivery pump, the first port valve, compressor and the second port valve are connected.
As a kind of embodiment of the utility model, the liquid cooling system has the total inlet pipe being located at outside cabinet
With main drain pipe road, there is the cooling liquid inlet and cooling liquid outlet passed in and out for coolant liquid, the liquid cooling system on the heat exchanger
The main drain pipe road of system and the cooling liquid inlet of heat exchanger connect, and total inlet pipe of liquid cooling system and the coolant liquid of heat exchanger go out
Mouth connection is so that liquid cooling system is connected with heat-exchange system, equipped with acceleration coolant flow on the main drain pipe road of liquid cooling system
Circulating pump.The distance between the server and condenser of large-scale data center are generally arranged farther out, and circulating pump can be by cooling
Liquid circulation is got up, and coolant liquid is accelerated to enter heat-exchange system, improving heat exchanging efficiency.
As a kind of preferred embodiment of the utility model, the liquid cooling system is fountain liquid cooled server system.
As another preferred embodiment of the utility model, the liquid cooling system is immersion liquid cooled server system
System.
As a kind of preferred embodiment of the utility model, the coolant liquid is suitable compatible with server component
Coolant liquid, for example be the non-corrosive heat transfer medium oils of insulation, fluorination liquid.
As a kind of preferred embodiment of the utility model, the heat transferring medium is freon class, as R22, R410A,
R407C, R744, R134a, R1234yf, R290 and R600a etc..
As a kind of preferred embodiment of the utility model, the heat exchanger is plate heat exchanger or pipe shell type heat exchange
Device.
Compared with prior art, the utility model has following significant effect:
(1) the liquid cooling system of the utility model is by the way of the cooling heating device of coolant liquid, than existing wind-cooling heat dissipating
Exchange capability of heat is stronger, all heats in high power server can be taken away, it is therefore not necessary to add other cooling systems to solve
The problem of certainly after-heat is taken away in server, the utility model only need to consider the heat transfer problem of coolant liquid, only for one
Critical-temperature is controlled to adjust, so, the structure of cooling system is simplified, the construction cost of system is reduced.
(2) the cooling temperature of coolant liquid is higher in the utility model liquid cooling system, even if being up to 35 DEG C in outdoor environment temperature
In the case where, but since there are biggish heat transfer temperature differences for heat transferring medium and outdoor environment, do not need starting compressor, compression
Machine can just be opened when ambient temperature is relatively high, so that the energy consumption of cooling system whole year is lower, can effectively reduce system
Energy consumption.
(3) different types of condenser can be arranged in the condenser in the utility model cooling system according to actual needs, with full
The different radiating requirements of foot.
(4) the universal region situation of China is combined, and the utility model can effectively reduce compression in Perenniporia martius some areas
The use duration of machine, some areas need not use compressor, whole energy significant effect, suitable for being widely popularized and using substantially.
Detailed description of the invention
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.
Fig. 1 is the whole composed structure schematic diagram of the utility model cooling system.
Specific embodiment
As shown in Figure 1, be a kind of cooling server radiating system of contact of the utility model, it include control system 1,
Liquid cooling system 2, heat-exchange system 3, pressure-detecting device and system for detecting temperature 4, the available outdoor environment of system for detecting temperature 4
Temperature, liquid cooling system 2 cool down server internal heat generation device using coolant liquid, in the present embodiment, coolant liquid and service
Device internal heat generation device or the extended surface contacted with heating device directly contact, and liquid cooling system is fountain liquid cooled server system
System.
Fountain liquid cooled server system includes machine cabinet body 14, erects multiple clothes that column are mounted in 14 space of machine cabinet body
Be engaged in device 15, cloth liquid shower plate 16, the reservoir 17 for storing the cryogenic liquid to flow back from cooling system, connecting line,
Ball-cock assembly 18, the main drain pipe road 11 outside machine cabinet body 14 and total inlet pipe 10.Reservoir 17 can external machine cabinet body
It 14 or is set in machine cabinet body 14.Reservoir 17 is connect by connecting line with cloth liquid shower plate 16, and coolant liquid passes through cloth
The aperture of liquid shower plate 16 and 15 internal heat generation device contacts of server, coolant liquid are back to setting after taking away the heat of heating device
Accumulator tank above cloth liquid shower plate 16, coolant liquid in accumulator tank through the connecting line being arranged in cabinet flow to it is total go out
Liquid pipeline 11.Liquid level sensor is equipped in reservoir 17, liquid level sensor is ball-cock assembly 18, and ball-cock assembly 18 makes in reservoir 17
Liquid level keeps balance, adjusts the liquid outlet quantity of coolant liquid in reservoir 17, the pressure for each cloth liquid shower plate 16 for entering coolant liquid
Environment is consistent.
In other embodiments, liquid cooling system is also possible to immersion liquid cooled server system, immersion liquid cooled server
System includes machine cabinet body, the multiple servers being placed in machine cabinet body, liquid level sensor, valve, outlet tube road and feed liquor
Pipeline.Coolant liquid submerges all heating devices in server, and coolant liquid is circulated by outlet tube road and inlet pipe.Liquid level passes
Sensor is used to detect the liquid level of coolant liquid, and valve is set in outlet tube road and inlet pipe, and connects with liquid level sensor
It connects, the disengaging rate of coolant liquid is adjusted to keep coolant liquid in cabinet according to the information opening and closing pipeline of liquid level sensor acquisition
Liquid level.
Heat-exchange system mainly by heat exchanger 5, compressor 6, condenser 7, energy-saving and frequency-variable pump 8 and electric expansion valve 9 successively
Be connected to form in have refrigerant circulation flow the first circuit, refrigerant is freon, as R22, R410A, R407C, R744,
R134a, R1234yf, R290 and R600a etc..Liquid cooling system by heat exchanger 5 and heat-exchange system be connected to form in there is coolant liquid to follow
The dynamic second servo loop of circulation, coolant liquid are heat transfer medium oil or fluorination liquid, are also possible to other compatible with server component
Coolant liquid carries out partition with refrigerant in heat exchanger with the coolant liquid after the heat exchange of server internal heat generation device in liquid cooling system
Formula heat exchange；Compressor 6 is frequency-changeable compressor, and the revolving speed of compressor can be adjusted according to computer room load dynamic, is further saved
Energy consumption.Heat exchanger 5 is plate heat exchanger or shell-and-tube heat exchanger, and heat-exchange system further includes the first port valve 19 and the second port valve 20,
First port valve 19 is in parallel with energy-saving and frequency-variable pump 8 by the first connecting line, and the second port valve 20 passes through the second connecting line and compression
Machine 6 is in parallel；Control system 1 pumps the 8, first port valve 19, compression with pressure-detecting device, system for detecting temperature 4, energy-saving and frequency-variable respectively
Machine 6 is connected with the second port valve 20.Pressure-detecting device is used to detect coolant liquid and enters the pressure after energy-saving and frequency-variable pump 8, pressure inspection
It is on the pipeline that energy-saving and frequency-variable pumps 8 inlets and in parallel with the first port valve to survey device.When pressure-detecting device detects cooling
When hydraulic coupling is not sufficient to ensure that the transport capacity in connecting tube, pressure-detecting device sends a signal to control system, control
System issues instruction and adjusts variable frequency pump so that there is enough transport capacities to make coolant flow in connecting pipe.When pressure is examined
When survey device detects that coolant pressure is enough to ensure that the transport capacity in connecting tube, pressure-detecting device is sent a signal to
Control system, control system, which issues instruction, makes variable frequency pump keep original working condition.
Energy-saving and frequency-variable pump 8 is made of pump, motor, controller and frequency converter.Pressure sensor acquires pipe network transmission pressure and passes
Control system is transported to, frequency, that is, revolving speed of instruction control variable frequency pump driving motor is issued by control system, presses system as required
Power operation, such variable frequency pump can further save energy consumption by adjusting revolving speed to reach adjusting flow.
Liquid cooling system has the total inlet pipe 10 being located at outside cabinet and main drain pipe road 11, has cooling supply on heat exchanger
But the coolant liquid of the cooling liquid inlet 12 and cooling liquid outlet 13 of liquid disengaging, the main drain pipe road 11 of liquid cooling system and heat exchanger into
Mouth 12 connects, and total inlet pipe 10 of liquid cooling system is connect with the cooling liquid outlet 13 of heat exchanger so that liquid cooling system and heat exchange system
System is connected, and circulating pump is equipped on the main drain pipe road 11 of liquid cooling system, to accelerate coolant liquid to enter heat-exchange system, promotion is changed
The thermal efficiency.
Working principle of the utility model is:
(1) in liquid cooling system, the coolant liquid after exchanging heat with heating device always goes out liquid by acting through for circulating pump
Pipeline enters heat exchanger, carries out heat exchange cooling with refrigerant in heat exchanger, and the coolant liquid after cooling passes through total inlet pipe
Into server, cool down to heating device, so recycles.
(2) in heat-exchange system, the refrigerant in heat exchanger absorbs coolant liquid heat after contacting with coolant liquid to freeze
The temperature raising of agent becomes gas, and gas enters condenser by pipeline, and gas is carried out to Environment release heat within the condenser
It is cooling, become cryogenic liquid, then by delivery pump and electric expansion valve, become the liquid of low-temp low-pressure, eventually pass back to heat exchanger
In to coolant liquid carry out heat exchange, so recycle.
A kind of application method for the server radiating system that above-mentioned contact is cooling, controls opening for each component by control system
It opens and closes, specifically includes the following steps:
1. when environment temperature < T1 (T1≤30 DEG C), ambient air outside can be by forced convertion by refrigerant at this time
It is cooled to and requires temperature and state, open the second port valve, close compressor at this time, refrigerant passes through heat absorption evaporation in heat exchanger
Condenser is entered by pipeline after phase transformation, is cooled down in condenser to Environment release heat, becomes cryogenic liquid.It closes at this time
Compressor needs to open variable frequency pump and is transmitted to guarantee the transport capacity in connecting pipe.It closes the first port valve, open
Variable frequency pump, cryogenic liquid become high pressure low temperature liquid by energy-saving and frequency-variable pump, are transferred to electric expansion valve by connecting line, pass through
The liquid after the effect of expansion valve as low-temp low-pressure is crossed, eventually passes back to carry out heat exchange to coolant liquid in heat exchanger.
2. closing the first port valve and the second port valve when TI (T1≤30 DEG C) < environment temperature < T2 (35~38 DEG C), open
Compressor and variable frequency pump, refrigerant carries out heat exchange in heat exchanger with coolant liquid at this time becomes gas, and gas passes through compressor
The gas for becoming high temperature and pressure afterwards, enters condenser by pipeline, is cooled down, become to Environment release heat in condenser
High pressure low temperature liquid, refrigerant pass through pipeline again and enter variable frequency pump, finally become low pressure, low temperature liquid using expansion valve, finally
It is back to heat exchanger and coolant liquid carries out heat exchange again, so recycle.According to the variation of the environment temperature in this section and pipe
The transport pressure of road inner refrigerant, the working condition of dynamic regulation compressor and variable frequency pump realize that energy consumption reduces.
3. as environment temperature > T2, enough temperature difference needed for external temperature is not enough to provide refrigerant condensation are opened at this time
Compressor and the first port valve close variable frequency pump and the second port valve, and refrigerant, which carries out heat exchange with coolant liquid in heat exchanger, to be become
Gas, gas become the gas of high temperature and pressure after compressor, enter condenser by pipeline, release in condenser to environment
Thermal discharge is cooled down, and high pressure low temperature liquid is become.Liquid enters expansion valve as low-pressure low-temperature liquid by the first connecting line
Body, is finally back to heat exchanger and coolant liquid carries out heat exchange again, so recycles.
The embodiments of the present invention is without being limited thereto, above content according to the present utility model, according to the general of this field
Logical technological know-how and customary means, under the premise of not departing from the utility model above-mentioned basic fundamental thought, the utility model also has
There are many modification, replacement or the changes of form, all fall within the utility model rights protection scope.
Claims (9)
1. a kind of cooling server radiating system of contact, it includes liquid cooling system and heat-exchange system, it is characterised in that: described
Liquid cooling system cools down server internal heat generation device using coolant liquid, and the heat-exchange system is mainly by heat exchanger, compression
Machine, condenser, delivery pump and expansion valve are sequentially connected interior the first circuit for having refrigerant circulation to flow of composition, the liquid cooling system
System is connected to form the interior second servo loop for having coolant liquid to circulate by heat exchanger and heat-exchange system, in liquid cooling system with fever
Coolant liquid after device heat exchange carries out dividing wall type heat exchange with refrigerant in heat exchanger；The heat-exchange system further includes first logical
Valve and the second port valve, first port valve is in parallel with the delivery pump by the first connecting line, and second port valve passes through the
Two connecting lines and the compressor parallel.
2. the cooling server radiating system of contact according to claim 1, it is characterised in that: the contact is cooling
Server radiating system further include control system, the pressure-detecting device for entering for detecting coolant liquid the pressure after delivery pump
And system for detecting temperature, the pressure-detecting device is on the pipeline of delivery pump inlet and in parallel with first port valve,
The control system respectively with pressure-detecting device, system for detecting temperature, delivery pump, the first port valve, compressor and the second port valve
It is connected.
3. the cooling server radiating system of contact according to claim 2, it is characterised in that: the liquid cooling system tool
Have the total inlet pipe being located at outside cabinet and main drain pipe road, have on the heat exchanger coolant liquid that is passed in and out for coolant liquid into
Mouthful and cooling liquid outlet, the cooling liquid inlet of the main drain pipe road of the liquid cooling system and heat exchanger connect, liquid cooling system it is total
Inlet pipe is connected with the cooling liquid outlet of heat exchanger so that liquid cooling system and heat-exchange system are connected, in total liquid out of liquid cooling system
Pipeline is equipped with the circulating pump for accelerating coolant flow.
4. the cooling server radiating system of contact according to claim 3, it is characterised in that: the liquid cooling system is
Fountain liquid cooled server system.
5. the cooling server radiating system of contact according to claim 3, it is characterised in that: the liquid cooling system is
Immersion liquid cooled server system.
6. the cooling server radiating system of contact according to claim 4 or 5, it is characterised in that: the coolant liquid
For the heat transfer medium oils or fluorination liquid for insulating non-corrosive.
7. the cooling server radiating system of contact according to claim 6, it is characterised in that: the refrigerant is fluorine
Leon class.
8. the cooling server radiating system of contact according to claim 7, it is characterised in that: the heat exchanger is plate
Formula heat exchanger.
9. the cooling server radiating system of contact according to claim 7, it is characterised in that: the heat exchanger is pipe
Shell heat exchanger.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822090482.0U CN209149240U (en) | 2018-12-12 | 2018-12-12 | A kind of server radiating system that contact is cooling |
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| CN201822090482.0U CN209149240U (en) | 2018-12-12 | 2018-12-12 | A kind of server radiating system that contact is cooling |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110505794A (en) * | 2019-08-26 | 2019-11-26 | 北京航空航天大学 | A kind of multimachine cabinet two phase heat-radiation system |
| CN111465264A (en) * | 2020-04-01 | 2020-07-28 | 江苏国富氢能技术装备有限公司 | Data center based on liquid hydrogen energy supply cooling |
| CN111475002A (en) * | 2020-03-05 | 2020-07-31 | 浙江诺亚氟化工有限公司 | Cooling liquid and application thereof in cooling system of electronic equipment |
| CN111506169A (en) * | 2020-04-15 | 2020-08-07 | 捷通智慧科技股份有限公司 | Solid immersion type liquid cooling server and solid immersion type liquid cooling service system |
| CN111629570A (en) * | 2020-06-28 | 2020-09-04 | 中国电子科技集团公司第三十八研究所 | Spraying jet type double-loop data center liquid cooling system |
| CN112051912A (en) * | 2020-09-30 | 2020-12-08 | 兰洋(宁波)科技有限公司 | Single-phase immersed liquid heat exchange system and heat exchange method |
| WO2024017328A1 (en) * | 2022-07-20 | 2024-01-25 | 超聚变数字技术有限公司 | Server and server system |
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2018
- 2018-12-12 CN CN201822090482.0U patent/CN209149240U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110505794A (en) * | 2019-08-26 | 2019-11-26 | 北京航空航天大学 | A kind of multimachine cabinet two phase heat-radiation system |
| CN111475002A (en) * | 2020-03-05 | 2020-07-31 | 浙江诺亚氟化工有限公司 | Cooling liquid and application thereof in cooling system of electronic equipment |
| CN111465264A (en) * | 2020-04-01 | 2020-07-28 | 江苏国富氢能技术装备有限公司 | Data center based on liquid hydrogen energy supply cooling |
| CN111506169A (en) * | 2020-04-15 | 2020-08-07 | 捷通智慧科技股份有限公司 | Solid immersion type liquid cooling server and solid immersion type liquid cooling service system |
| CN111506169B (en) * | 2020-04-15 | 2023-08-15 | 捷通智慧科技股份有限公司 | Solid immersion type liquid cooling server and solid immersion type liquid cooling service system |
| CN111629570A (en) * | 2020-06-28 | 2020-09-04 | 中国电子科技集团公司第三十八研究所 | Spraying jet type double-loop data center liquid cooling system |
| CN111629570B (en) * | 2020-06-28 | 2022-04-19 | 中国电子科技集团公司第三十八研究所 | Spraying jet type double-loop data center liquid cooling system |
| CN112051912A (en) * | 2020-09-30 | 2020-12-08 | 兰洋(宁波)科技有限公司 | Single-phase immersed liquid heat exchange system and heat exchange method |
| WO2024017328A1 (en) * | 2022-07-20 | 2024-01-25 | 超聚变数字技术有限公司 | Server and server system |
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Effective date of registration: 20211118 Address after: 526000 room 142, workshop (Building B), Zhaoqing New District Investment Development Co., Ltd., north 8 District, Guicheng new town, Dinghu District, Zhaoqing City, Guangdong Province Patentee after: Guangdong Xijiang Data Technology Co.,Ltd. Address before: Room 431, 333 jiufo Jianshe Road, Zhongxin Guangzhou Knowledge City, Guangzhou, Guangdong 510530 Patentee before: GUANGDONG HI-1 NEW MATERIALS TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. |
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