CN208805434U - A kind of detection device of portable sugar products loss on drying - Google Patents
A kind of detection device of portable sugar products loss on drying Download PDFInfo
- Publication number
- CN208805434U CN208805434U CN201821299335.8U CN201821299335U CN208805434U CN 208805434 U CN208805434 U CN 208805434U CN 201821299335 U CN201821299335 U CN 201821299335U CN 208805434 U CN208805434 U CN 208805434U
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- Prior art keywords
- shielding shell
- metal shielding
- temperature sensor
- metal
- detection device
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- 238000001514 detection method Methods 0.000 title claims abstract description 41
- 235000000346 sugar Nutrition 0.000 title claims abstract description 33
- 238000001035 drying Methods 0.000 title claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 75
- 238000012360 testing method Methods 0.000 claims abstract description 32
- 238000007789 sealing Methods 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 235000021552 granulated sugar Nutrition 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000010453 quartz Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- OWEGMIWEEQEYGQ-UHFFFAOYSA-N 100676-05-9 Natural products OC1C(O)C(O)C(CO)OC1OCC1C(O)C(O)C(O)C(OC2C(OC(O)C(O)C2O)CO)O1 OWEGMIWEEQEYGQ-UHFFFAOYSA-N 0.000 description 2
- 229930091371 Fructose Natural products 0.000 description 2
- RFSUNEUAIZKAJO-ARQDHWQXSA-N Fructose Chemical compound OC[C@H]1O[C@](O)(CO)[C@@H](O)[C@@H]1O RFSUNEUAIZKAJO-ARQDHWQXSA-N 0.000 description 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 2
- GUBGYTABKSRVRQ-PICCSMPSSA-N Maltose Natural products O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@@H]1O[C@@H]1[C@@H](CO)OC(O)[C@H](O)[C@H]1O GUBGYTABKSRVRQ-PICCSMPSSA-N 0.000 description 2
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 2
- GUBGYTABKSRVRQ-QUYVBRFLSA-N beta-maltose Chemical compound OC[C@H]1O[C@H](O[C@H]2[C@H](O)[C@@H](O)[C@H](O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@@H]1O GUBGYTABKSRVRQ-QUYVBRFLSA-N 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 239000002274 desiccant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229960002737 fructose Drugs 0.000 description 2
- 239000008103 glucose Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000005715 Fructose Substances 0.000 description 1
- 229930006000 Sucrose Natural products 0.000 description 1
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 235000001727 glucose Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000001303 quality assessment method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 230000036413 temperature sense Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Investigating Or Analysing Biological Materials (AREA)
Abstract
The utility model discloses a kind of detection devices of portable sugar products loss on drying, it includes sample placement mechanism and electrical testing agency, the sample placement mechanism includes Metal shielding shell, the quartzy vacuum test tube being set in Metal shielding shell, the opening of quartzy vacuum test tube is covered with thermal-insulating sealing plug, the electrical testing agency includes the instrumentation control system being set to outside Metal shielding shell, temperature sensor module, microwave generating apparatus, battery module, operation display interface module, pin type temperature sensor and microwave antenna, the pin type temperature sensor is connect with temperature sensor module, and sequentially pass through Metal shielding shell and thermal-insulating sealing plug extends in quartzy vacuum test tube, the bottom that described microwave antenna one end passes through the Metal shielding shell extends in Metal shielding shell, and and Metal shielding shell Side wall form certain tilt angle.The utility model can accurately detect out the loss on drying index of sugar products, have many advantages, such as efficient, low cost.
Description
Technical field
The utility model relates to sugar products detection fields, and in particular to a kind of detection device of sugar products loss on drying.
Background technique
The loss on drying of sugar products mean sugar products under prescribed conditions dry after institute's less loss weight percentage.Less loss weight with
Sampling weight ratio is calculated as the loss on drying of the test agent.The less loss weight of sugar products be mainly moisture, the crystallization water and other wave
Volatile material.
Frequently with oven method, constant temperature hypobaric drying method, desiccant dryness method, the latter divides often dry weightless mensuration again
Two kinds of pressure and decompression.Oven method be suitable for no crystal water sugar products, constant temperature hypobaric drying method be suitable for containing the crystallization water or its
The more difficult sugar products eliminated of moisture.Desiccant dryness method is suitable for the sugar products of low temperature drying.Hypobaric drying method helps to remove moisture
And volatile materials.
Sugar products loss on drying is small, keeps measurement result relative error big, so whole operation process is careful with caution, it is subtle,
It is corresponding.In addition to strictly observing and being operated as defined in standard method, when the cooling that pay special attention to weighing bottle when having sample and a no sample
Between, environment, temperature, humidity, the conditions such as temperature should correspond to unanimously as far as possible in drier.
In sugar products detection field, loss on drying is to evaluate the index of sugar products quality grade.The daily production field of circulation all
Largely to detect demand.Therefore, it is necessary to provide a kind of efficient, low cost and the inspection for meeting national standard detection accuracy
Survey device.
Utility model content
In order to overcome the deficiencies of the prior art and there are the problem of, the utility model provides a kind of portable sugar products loss on drying
Detection device, the loss on drying index of sugar products can be accurately detected out, have many advantages, such as efficiently, low cost.
The utility model is achieved through the following technical solutions: a kind of detection device of portable sugar products loss on drying,
Described device includes sample placement mechanism and electrical testing agency, and the sample placement mechanism includes Metal shielding shell, setting
In the quartzy vacuum test tube in Metal shielding shell, the opening of quartzy vacuum test tube is covered with thermal-insulating sealing plug, described electrical
Testing agency include the instrumentation control system being set to outside Metal shielding shell, temperature sensor module, microwave generating apparatus,
Battery module and operation display interface module, the temperature sensor module, microwave generating apparatus, battery module and display
Operating Interface Module is connect with instrumentation control system, and operation display interface module, instrumentation control system and microwave occur
Device is connect with the battery module,
The electrical testing agency further includes having pin type temperature sensor and microwave antenna, the pin type temperature sensor with
Temperature sensor module connection, and sequentially pass through Metal shielding shell and thermal-insulating sealing plug extends in quartzy vacuum test tube, institute
The one end for stating microwave antenna is connect with the microwave generating apparatus, and the bottom that the other end passes through the Metal shielding shell extends to
In Metal shielding shell, the side wall of the microwave antenna and Metal shielding shell forms certain tilt angle.
Further, the bottom of the Metal shielding shell is provided with miniature water storehouse.
Preferably, the pin type temperature sensor includes pin type hollow metal pipe, the bottom of the pin type hollow metal pipe
Be provided with heat-conducting metal block, one end that heat-conducting metal block is close in pin type hollow metal pipe is provided with temperature-sensitive block, the temperature-sensitive block with
The heat-conducting metal block connection, and the temperature-sensitive block is connect by connecting line with the temperature sensor module, the heat-conducting metal
Block is provided with micropore through-hole.
Preferably, the temperature-sensitive block is by the electric resistance sensor of negative temperature coefficient, the electric resistance sensor of positive temperature coefficient or K-type
The combination of one or both of thermocouple is made.
Preferably, the Metal shielding shell is integrally in cylindrical shape, the inner sidewall of Metal shielding shell is flat and smooth
Inner sidewall；The battery module is rechargeable type battery module.
Detection device provided by the utility model utilizes sugar and water when carrying out sugar products loss on drying Indexs measure
Difference in dielectric constant is exaggerated detection resolution threshold by the selective heat characteristic of microwave, can effectively detect the dry of sugar products
It is dry weightlessness index, have many advantages, such as it is efficient, at low cost, convenient for operate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of detection device described in the utility model embodiment.
Fig. 2 is the structural schematic diagram of pin type temperature sensor described in the utility model embodiment.
Fig. 3 is the power graph of microwave generating apparatus described in the utility model embodiment.
Fig. 4 is sample to be tested heating curve figure described in the utility model embodiment.
Wherein, drawing reference numeral are as follows: 10- metal screen case, 11- metallic shield lid, 20- quartz vacuum test tube, 21- heat preservation
Sealing-plug, the miniature water storehouse of 22-, 30- pin type temperature sensor, 31- pin type hollow metal pipe, 32- heat-conducting metal block, 33- sense
Warm block, 34- connecting line, 40- microwave antenna, 50- sample to be tested.
Specific embodiment
For the ease of the understanding of those skilled in the art, below in conjunction with the drawings and specific embodiments to the utility model make into
One step detailed description.
As shown in Fig. 1, a kind of detection device of portable sugar products loss on drying, described device include
Sample placement mechanism and electrical testing agency, the sample placement mechanism include Metal shielding shell (the present embodiment
In, the Metal shielding shell is integrally in cylindrical shape, and Metal shielding shell includes 10 He of metal screen case of cylindrical shape
Lid is closed in the open-topped circular metallic shield lid 11 of metal screen case), the quartz that is set in Metal shielding shell it is true
Empty test tube 20, the opening of quartzy vacuum test tube are covered with thermal-insulating sealing plug 21, and the electrical testing agency includes to be set to
Instrumentation control system, temperature sensor module, microwave generating apparatus, battery module and display operation outside Metal shielding shell
Interface module, the temperature sensor module, microwave generating apparatus, battery module and operation display interface module are and instrument
Control system connection, and operation display interface module, instrumentation control system and microwave generating apparatus with the battery module
Connection；
The electrical testing agency further includes having pin type temperature sensor 30 and microwave antenna 40, the pin type temperature sensing
Device is connect with temperature sensor module, and sequentially passes through the Metal shielding shell (metallic shield specially in Metal shielding shell
Lid 11) and thermal-insulating sealing plug 21 extend in quartzy vacuum test tube 20, one end of 40 line of microwave day and the microwave occur
Device connection, the other end pass through the bottom of the Metal shielding shell (metal screen case 10 specially in Metal shielding shell)
Portion extends in Metal shielding shell, and the side wall of the microwave antenna and Metal shielding shell forms certain tilt angle, with
So that the microwave that microwave generating apparatus generates is injected outside metallic shield by the bottom of Metal shielding shell with certain tilt angle
In shell, in the present embodiment, the tilt angle is preferably 5~45 °, and selection can be more actually needed in specific tilt angle.Separately
Outside, in the present embodiment, the inner sidewall of Metal shielding shell is preferably flat and smooth inner sidewall, since the microwave is along straight-line transmitting
It broadcasts, microwave inner sidewall radiation smooth in Metal shielding shell can be equably radiated on sample to be tested 50, microwave energy quilt
50 sorption enhanced thermal energy of sample to be tested, so the temperature of sample to be tested 50 can rise.
Since microwave energy has fuel factor, while it also will affect the electromagnetic compatibility index of environment, therefore in the present embodiment
Using Metal shielding shell, to ensure that microwave energy is locked in inside the Metal shielding shell, external environment is not influenced.Separately
Outside, the quartzy vacuum test tube 20 in the present embodiment is made of the double-deck quartz material, and the dielectric constant of quartz material is extremely low, microwave energy
Amount can be directed through and not consume, and make the sorption enhanced that sample to be tested is more full and uniform to microwave energy, the present embodiment is adopted
Designed with quartzy vacuum test tube clear hollow, utmostly reduce heat loss, and convenient for observation operation, it is ensured that detection it is accurate
Property.The thermal-insulating sealing plug 21 is made of the advanced low-k materials of heatproof, does not influence microwave operational, sealing thermal insulation lid is in quartz
It is flexibly connected between vacuum test tube and pin type temperature sensor, plays the role of sealing thermal insulation.
As preferred embodiment, the bottom of the Metal shielding shell is provided with miniature water storehouse 22, the miniature water storage
Storehouse 22 is stored with water, for absorbing in Metal shielding shell by remaining microwave energy after sample to be tested sorption enhanced, miniature storage
The temperature rise of sump is radiated by Metal shielding shell.
In a wherein preferred embodiment, 30 specific structure of pin type temperature sensor is as shown in Fig. 2, packet
Pin type hollow metal pipe 31 is included, the bottom of the pin type hollow metal pipe is provided with heat-conducting metal block 32, pin type hollow metal pipe
The one end for being inside close to heat-conducting metal block is provided with temperature-sensitive block 33, which connect with the heat-conducting metal block, and the temperature-sensitive block
It is connect by connecting line 34 with the temperature sensor module, the heat-conducting metal block is provided with micropore through-hole, micropore through-hole
Be arranged quantity be it is multiple, micropore through-hole is used to be connected to the inside of silica valve and external, induces sample to be tested in microwave heating
Process, hot gas are leaked into outside silica valve by the micro through-hole, simultaneously because the flowing of hot gas, are obtained on heat-conducting metal block
Temperature equal proportion in the temperature of sample to be tested.In addition, the temperature sense point of the temperature-sensitive block 33 is close to heat-conducting metal block, with
Minimum thermal resistance obtains temperature parameter value.In the present embodiment, electric resistance sensor of the temperature-sensitive block by negative temperature coefficient, positive temperature
The combination of one or both of electric resistance sensor or K-type thermocouple of coefficient is made.The temperature detection range of this detection device is 0
DEG C ~ 120 DEG C, both the above temperature sensor (electric resistance sensor or K-type thermocouple) has in the temperature detection range of instrument
The characteristic of high resolution, the peripheral simple, low cost of detection circuit etc..
In a wherein preferred embodiment, the battery module is preferably rechargeable type battery module.This implementation
Example in, the instrumentation control system, be low-power consumption micro processing system, be used for to temperature sensor carry out data sampling,
Operation, processing, and Coordination Treatment operation display interface module data；Meanwhile instrumentation control system is also used to control microwave
Device adjusts the power of microwave generating apparatus, guarantees that same type sample to be tested is same microwave energy power standard；Instrument
The data of typical sample to be tested are stored in control system, such as sugar products type (white granulated sugar, soft white sugar, brown granulated sugar, glucose, fruit
Sugar, maltose etc.), quality assessment grade (purification, top grade, level-one, second level, not up to standard).The operation display interface module is used
In display detecting state, test number (loss on drying index), the information such as time schedule, device parameter.The microwave fills
It sets, is used to generate microwave, converts electrical energy into microwave energy.In the present embodiment, the power of microwave generating apparatus such as 3 institute of attached drawing
Show, peak power output is rated power, and watt level carries out duty cycle adjustment according to the fixed duty cycle, it is ensured that microwave energy
Amount has certain reflection-absorption time, while ensuring that microwave generating apparatus does not generate excess temperature, and output power parameter consistency is strong.
It should be noted that each functional module (instrument controlling system of the electrical testing agency in the utility model embodiment
System, temperature sensor module, microwave generating apparatus, battery module, operation display interface module, pin type temperature sensor and micro-
Wave antenna), functional module existing in the prior art can be used realize or each functional module can be used the prior art come
It constitutes, therefore, concrete composition and working principle in the present embodiment no longer to each functional module of electrical testing agency are made detailed
Description.In addition, for the instrumentation control system in the utility model embodiment, while it is desirable to it is applied to computer program, but
It is the improvement for being not related to computer program.
Brief description is made to the working principle of detection device provided by the embodiment of the utility model below:
The loss on drying index of sample to be tested (the utility model refers to sugar products), mainly detection sugar products in water content and
Volatile component content.Sugar products such as (white granulated sugar, brown granulated sugar, glucose, fructose, maltose) removes moisture removal and volatile component
Dielectric constant afterwards is 20 DEG C of 3(room temperature), and 20 DEG C of the dielectric constant 80(room temperature of water), it is possible thereby to detect with certain aqueous
The sugar products dielectric constant of rate may be characterized as the loss on drying index of sample.And in sugar products, the loss on drying index of white granulated sugar is most
Difficult accurate detection refines the loss on drying index (≤0.05%) of grade according to national Specification, and the dry of top grade grade loses
Weight index (≤0.06%), the loss on drying index (≤0.07%) of level-one grade, second level grade loss on drying index (≤
0.10%), detection error allows within 15%, it can be seen that, the error for carrying out weight difference detection by drying box is big, detection week
Phase is long, wants to detection process operation and its harsh.And by the difference in dielectric constant of sugar products and moisture, then it is exaggerated detection door
Limit, for the precision of detection, convenience, low cost is created condition.Detection device provided by the embodiment of the utility model, just
It is that detection resolution threshold is exaggerated by the selective heat characteristic of microwave using the difference in dielectric constant of sugar and water, passes through inspection
The heating curve for surveying sample to be tested carrys out secondary indication loss on drying index, so as to effectively detect that the loss on drying of sugar products refers to
Mark.Using detection device provided by the embodiment of the utility model to the temperature curves of different samples detected by sample to be tested such as
Shown in attached drawing 4, in instrumentation control system, be stored with it is a set of using standard initial temperature T0 as the temperature rise curve data of starting point,
These data belong to data existing in the prior art or can obtain gained according to the prior art.Due in national standard not yet
It provides the detection initial temperature of loss on drying, so measured temperature is subject to actual room temperature, therefore tests to obtain temperature curve
It is modified, is postponed with fixed detection time t ', the temperature gap (T '-T0 ') finally obtained is characterized as detected value.This
The detection device that utility model embodiment provides can be applicable in the detection of various initial temperature sugar products samples, and have it is efficient, at low cost,
The advantages that convenient for operating.
Above-described embodiment is the preferable implementation of the utility model, is not the restriction to the utility model, not
Be detached from the utility model inventive concept under the premise of, it is any it is obvious replacement the protection scope of the utility model it
It is interior.
Claims (7)
1. a kind of detection device of portable sugar products loss on drying, it is characterised in that: described device include sample placement mechanism and
Electrical testing agency, the sample placement mechanism includes Metal shielding shell, the quartzy vacuum that is set in Metal shielding shell
Test tube, the opening of quartzy vacuum test tube are covered with thermal-insulating sealing plug, and the electrical testing agency includes to be set to metal screen
Cover instrumentation control system, temperature sensor module, microwave generating apparatus, battery module and the operation display interface mould outside shell
Block, the temperature sensor module, microwave generating apparatus, battery module and operation display interface module with instrument controlling system
System connection, and operation display interface module, instrumentation control system and microwave generating apparatus are connect with the battery module,
The electrical testing agency further includes having pin type temperature sensor and microwave antenna, the pin type temperature sensor and temperature
Sensor module connection, and sequentially pass through Metal shielding shell and thermal-insulating sealing plug extends in quartzy vacuum test tube, it is described micro-
One end of wave antenna is connect with the microwave generating apparatus, and the bottom that the other end passes through the Metal shielding shell extends to metal
It shields in shell, the side wall of the microwave antenna and Metal shielding shell forms certain tilt angle.
2. detection device according to claim 1, it is characterised in that: the pin type temperature sensor includes that pin type is hollow
Metal tube, the bottom of the pin type hollow metal pipe are provided with heat-conducting metal block, heat-conducting metal block are close in pin type hollow metal pipe
One end be provided with temperature-sensitive block, which connect with the heat-conducting metal block, and the temperature-sensitive block passes through connecting line and the temperature
Sensor module connection is spent, the heat-conducting metal block is provided with micropore through-hole.
3. detection device according to claim 2, it is characterised in that: the temperature-sensitive block is sensed by the resistance of negative temperature coefficient
The combination of one or both of device, the electric resistance sensor of positive temperature coefficient or K-type thermocouple is made.
4. detection device according to claim 1, it is characterised in that: the Metal shielding shell is integrally in cylindrical shape,
The inner sidewall of Metal shielding shell is flat and smooth inner sidewall.
5. detection device according to claim 1, it is characterised in that: the battery module is rechargeable type battery mould
Block.
6. detection device according to claim 1, it is characterised in that: the tilt angle is 5~45 °.
7. detection device described according to claim 1~any one of 6, it is characterised in that: the Metal shielding shell
Bottom is provided with miniature water storehouse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821299335.8U CN208805434U (en) | 2018-08-13 | 2018-08-13 | A kind of detection device of portable sugar products loss on drying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821299335.8U CN208805434U (en) | 2018-08-13 | 2018-08-13 | A kind of detection device of portable sugar products loss on drying |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208805434U true CN208805434U (en) | 2019-04-30 |
Family
ID=66231541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821299335.8U Active CN208805434U (en) | 2018-08-13 | 2018-08-13 | A kind of detection device of portable sugar products loss on drying |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208805434U (en) |
-
2018
- 2018-08-13 CN CN201821299335.8U patent/CN208805434U/en active Active
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Address after: No.10, shiliugang Road, Haizhu District, Guangzhou City, Guangdong Province 510000 Patentee after: Institute of biological and medical engineering, Guangdong Academy of Sciences Address before: No.10, shiliugang Road, Haizhu District, Guangzhou City, Guangdong Province 510000 Patentee before: Institute of bioengineering, Guangdong Academy of Sciences |
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| CP01 | Change in the name or title of a patent holder | ||
| CP03 | Change of name, title or address |
Address after: No.10, shiliugang Road, Haizhu District, Guangzhou City, Guangdong Province 510000 Patentee after: Institute of bioengineering, Guangdong Academy of Sciences Address before: 510316 room 304, 3rd floor, East District, No.10 shiliugang Road, Haizhu District, Guangzhou City, Guangdong Province Patentee before: GUANGDONG PROVINCIAL BIOENGINEERING INSTITUTE (GUANGZHOU SUGARCANE INDUSTRY RESEARCH INSTITUTE) |
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