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GB 25463-2010Discharge standard of water pollutants for printing ink industry (English PDF)

油墨工业水污染物排放标准

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Issued by

Ministry of Environmental Protection, General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

Level / Type

National · Mandatory

Issue date

September 27, 2010

Implementation date

October 1, 2010

Scope

GB 25463-2010 is the English-translated version of 油墨工业水污染物排放标准.

This standard specifies the limits, monitoring and monitoring requirements for water pollutants in ink industry enterprises, as well as the implementation and supervision of standards. set. This standard applies to the management of water pollutants in ink industry enterprises, as well as the environmental impact assessment of the construction projects of ink industry enterprises. Environmental protection facility design, completion environmental protection acceptance and management of water pollutant discharge after production. This standard applies to the discharge of pollutants permitted by law. Sites for newly established pollution sources and tubes for existing pollution sources in special protection areas Li, in accordance with the Law of the People's Republic of China on the Prevention and Control of Air Pollution, the Law of the People's Republic of China on…

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Document preview — GB 25463-2010

National Standard of the People's Republic of China

ICS: 13.060.30
Classification: Z 60

Issued by: Ministry of Environmental Protection, General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

Foreword
1 Scope of application
2 Normative references
3 Terms and definitions
4 Water pollutant emission control requirements
1 pH 6～9 6～9 6～9
2 Chromaticity (dilution factor) 80 80 80
3 suspended matter 70 70 100
5 Chemical Oxygen Demand (COD) 150 100 300
6 Petroleum 10 10 10
7 animal and vegetable oil 15 15 15
8 volatile phenol 0.5 0.5 0.5
9 ammonia nitrogen 15 15 25
10 total nitrogen 50 30 50
11 Total Phosphorus 1.0 1.0 2.0
12 anilines 2.0 - 2.01)
13 total copper 0.5 - 0.51)
14 benzene 0.1 0.1 0.1
15 toluene 0.2 0.2 0.2
17 xylene 0.6 0.6 0.6
18 Total Organic Carbon (TOC) 30 30 60
19 total mercury 0.002
20 Alkyl mercury should not be detected
21 total cadmium 0.1
22 total chromium 0.5
23 hexavalent chromium 0.2
24 total lead 0.1
1 pH 6～9 6～9 6～9
2 Chroma (dilution factor) 70 50 80
3 Suspension 40 40 100
5 Chemical oxygen demand (COD) 120 80 300
6 Petroleum 8 8 8
7 animal and vegetable oil 10 10 10
8 volatile phenol 0.5 0.5 0.5
9 ammonia nitrogen 15 10 25
10 total nitrogen 30 20 50
11 total phosphorus 0.5 0.5 2.0
12 anilines 1.0 - 1.01)
13 total copper 0.5 - 0.51)
14 benzene 0.05 0.05
15 toluene 0.2 0.2 0.2
16 ethylbenzene 0.4 0.4 0.4
17 xylene 0.4 0.4 0.4
18 Total Organic Carbon (TOC) 30 20 60
19 total mercury 0.002
20 Alkyl mercury should not be detected
21 total cadmium 0.1
22 total chromium 0.5
23 hexavalent chromium 0.2
24 total lead 0.1
1 pH 6～9 6～9 6～9
2 Chromaticity (dilution factor) 30 30 70
3 suspended matter 20 20 40
5 Chemical oxygen demand (COD) 50 50 120
6 Petroleum 1.0 1.0 1.0
7 animal and vegetable oil 1.0 1.0 1.0
8 volatile phenol 0.2 0.2 0.2
9 ammonia nitrogen 5 5 15
10 total nitrogen 15 15 30
11 total phosphorus 0.5 0.5 0.5
12 anilines 0.5 - 0.51)
13 total copper 0.2 - 0.21)
14 benzene 0.05 0.05
15 toluene 0.1 0.1 0.1
16 ethylbenzene 0.4 0.4 0.4
17 xylene 0.4 0.4 0.4
18 Total Organic Carbon (TOC) 15 15 30
19 total mercury 0.001
20 Alkyl mercury should not be detected
21 total cadmium 0.01
22 total chromium 0.1
23 hexavalent chromium 0.05
24 total lead 0.1
4.5 Conversion of reference water discharge concentration
5 Water pollutant monitoring requirements
1 pH Water quality Determination of pH value Glass electrode method GB/T 6920-1986
2 Determination of chromaticity of water quality - Dilution multiple method GB/T 11903-1989
3 Determination of suspended solids suspended solids - Gravimetric method GB/T 11901-1989
5 Chemical oxygen demand
9 ammonia nitrogen
10 total nitrogen
14 Determination of benzene-based benzenes - Gas chromatography GB/T 11890-1989
17 Determination of benzene content in xylene - Gas chromatography GB/T 11890-1989
19 total mercury
21 total cadmium

Foreword

To implement the "Environmental Protection Law of the People's Republic of China", "Water Pollution Prevention and Control Law of the People's Republic of China"

Laws and Regulations, "State Council's Decision on Implementing the Scientific Outlook on Development and Strengthening Environmental Protection", etc.

Opinions on the planning of the main functional area of the country, to protect the environment, prevent pollution, promote the progress of the ink industry production process and pollution control technology,

Set this standard.

This standard stipulates the limits, monitoring and monitoring requirements for water pollutant discharge in ink industry enterprises, and is applicable to the prevention and control of water pollution in ink industry enterprises.

And management. To promote the coordinated development of regional economy and environment, promote the adjustment of economic structure and the transformation of economic growth mode, and guide the ink industry

The development direction of production technology and pollution control technology, this standard specifies the special emission limits for water pollutants.

The pollutant discharge concentrations in this standard are all mass concentrations.

Ink industry enterprises emit atmospheric pollutants (including odorous pollutants), and environmental noise is applied to the corresponding national pollutant discharge standards.

The identification, treatment and disposal of solid waste are subject to national solid waste pollution control standards.

This standard is the first release.

Since the implementation of this standard, the water pollutant discharge control of ink industry enterprises is carried out in accordance with the provisions of this standard, and the sewage comprehensive system is no longer implemented.

Relevant provisions in the Emission Standards (GB 8978-1996).

Local provincial people's governments may formulate local pollutant discharge standards for pollutants not specified in this standard;

For the specified pollutants, local pollutant discharge standards that are stricter than this standard can be formulated.

This standard was formulated by the Science and Technology Standards Department of the Ministry of Environmental Protection.

This standard is mainly drafted by. East China University of Science and Technology, Environmental Protection Institute of the Ministry of Environmental Protection, China Daily Chemical Association.

This standard was approved by the Ministry of Environmental Protection on September 10,.2010.

This standard has been implemented since October 1,.2010.

This standard is explained by the Ministry of Environmental Protection.

Ink industry water pollutant discharge standard

1 Scope of application

This standard specifies the limits, monitoring and monitoring requirements for water pollutants in ink industry enterprises, as well as the implementation and supervision of standards.

set.

This standard applies to the management of water pollutants in ink industry enterprises, as well as the environmental impact assessment of the construction projects of ink industry enterprises.

Environmental protection facility design, completion environmental protection acceptance and management of water pollutant discharge after production.

This standard applies to the discharge of pollutants permitted by law. Sites for newly established pollution sources and tubes for existing pollution sources in special protection areas

Li, in accordance with the Law of the People's Republic of China on the Prevention and Control of Air Pollution, the Law of the People's Republic of China on the Prevention and Control of Water Pollution,

Environmental Protection Law, Law of the People's Republic of China on the Prevention and Control of Environmental Pollution by Solid Waste, Law of the People's Republic of China on Environmental Impact Assessment, etc.

The relevant provisions of laws, regulations and rules are implemented.

The water pollutant emission control requirements specified in this standard are applicable to enterprises directly or indirectly discharging water pollutants outside their legal boundaries.

behavior.

2 Normative references

The contents of this standard refer to the following documents or their terms.

GB/T 6920-1986 Determination of water pH value - Glass electrode method

GB/T 7466-1987 Determination of total chromium in water - Potassium permanganate - Dibenzoyl dihydrazide spectrophotometric method

GB/T 7467-1987 Determination of hexavalent chromium in water - Diphenyl hydrazide spectrophotometric method

GB/T 7468-1987 Determination of total mercury in water -- Cold atomic absorption spectrophotometric method

GB/T 7469-1987 Determination of total mercury in water -- Potassium permanganate - potassium persulfate digestion method

GB/T 7470-1987 Determination of lead water - Dithizone spectrophotometric method

GB/T 7471-1987 Determination of cadmium in water -- Dithizone spectrophotometric method

GB/T 7475-1987 Determination of copper, zinc, lead and cadmium - Atomic absorption spectrophotometric method

GB/T 11889-1989 Determination of aniline compounds - N-(1-naphthyl) ethylenediamine azo spectrophotometric method

GB/T 11890-1989 Determination of benzene series in water quality - Gas chromatography

GB/T 11893-1989 Determination of total phosphorus in water - Ammonium molybdate spectrophotometric method

GB/T 11894-1989 Determination of total nitrogen in water - Alkaline potassium persulfate digestion - UV spectrophotometric method

GB/T 11901-1989 Determination of suspended solids by weight method

GB/T 11903-1989 Determination of chromaticity of water quality - Dilution method

GB/T 11914-1989 Determination of chemical oxygen demand in water - Dichromate method

GB/T 14204-1993 Determination of alkyl mercury in water quality - Gas chromatography

Water quality -- Determination of petroleum and animal and vegetable oils - Infrared photometric method

HJ/T 195-2005 Determination of ammonia nitrogen in water quality

HJ/T.199-2005 Determination of total nitrogen in water -- Gas phase molecular absorption spectroscopy

HJ/T 341-2007 Determination of mercury in water quality by cold atomic fluorescence method

HJ/T 399-2007 Determination of chemical oxygen demand in water quality - Rapid digestion spectrophotometric method

HJ 501-2009 Determination of Total Organic Carbon in Water - Combustion Oxidation - Non-dispersive Infrared Absorption Method

HJ 503-2009 Determination of volatile phenols in water - 4-aminoantipyline spectrophotometric method

HJ 505-2009 Water quality five-day biochemical oxygen demand (BOD5) determination dilution and inoculation method

HJ 535-2009 Determination of ammonia nitrogen in water quality - Nexus reagent spectrophotometric method

HJ 536-2009 Determination of ammonia nitrogen in water quality - Salicylic acid spectrophotometric method

HJ 537-2009 Determination of ammonia nitrogen in water quality - Distillation - Neutralometric titration

Measures for the Automatic Monitoring and Control of Pollution Sources (Order No. 28 of the State Environmental Protection Administration)

Measures for the Administration of Environmental Monitoring (Order No. 39 of the State Environmental Protection Administration)

3 Terms and definitions

The following terms and definitions apply to this standard.

3.1

Ink industry ink industry

Refers to the industry of preparing printing inks from pigments, fillers, binders and adjuvants, including homemade pigments and resin inks.

Production.

3.2

Comprehensive ink manufacturer

Refers to ink industry companies that produce pigments with an annual pigment yield of 1 000 t and above.

3.3

Other ink manufacturers other ink manufacturers

Refers to ink industry companies that do not produce pigments or ink industry companies that produce pigments with an annual production of pigments below 1 000 t.

3.4

Flat printing ink

Refers to the general term for inks used in various lithographic methods.

3.5

Dry lithographic ink planographic printing ink by dry method

It refers to a lithographic ink which is prepared by mixing and grinding a material such as a pigment dry powder and a binder.

3.6

Wet lithographic ink planographic printing ink by wet method

It refers to a lithographic ink which is mixed and ground with a water-based pigment cake and a material such as a binder.

3.7

Gravure ink gravure ink

Refers to the general term for inks used in gravure printing.

3.8

Flexographic printing ink

Refers to the general term for inks used in flexographic printing.

3.9

Base ink

It refers to an ink base prepared by uniformly mixing an aqueous pigment cake with an ink binder and removing moisture remaining therein.

3.10

Existing enterprise existing facility

Refers to the ink industry enterprise or production facility that has been completed and put into operation before the date of implementation of this standard.

3.11

New enterprise new facility

Refers to the construction, renovation and expansion of ink industrial facilities construction projects approved by the environmental impact assessment document from the date of implementation of this standard.

3.12

Effluent volume

Refers to the amount of wastewater discharged by a production facility or enterprise outside the legal boundaries of the enterprise, including various effluxes that are directly or indirectly related to production.

Waste water (such as domestic sewage, cooling wastewater, plant boilers and power station drainage).

3.13

Benchmark effluent volume per unit product

Refers to the upper limit of the wastewater discharge amount of the production unit product specified for the approval of the discharge concentration of water pollutants.

3.14

Public wastewater treatment system

Refers to collecting waste water through sewage pipelines, providing wastewater treatment services for more than two sewage disposal units and draining can reach relevant rows

Enterprises or institutions required by the standards, including urban sewage treatment plants of various scales and types, areas (including various industrial parks, development zones,

Industrial gathering places, etc.) Wastewater treatment plants, etc., should have a wastewater treatment level of two or more.

3.15

Direct discharge

Refers to the behavior of pollutant discharge units directly discharging pollutants into environmental water bodies.

3.16

Indirect discharge

Refers to the discharge of pollutants by the sewage unit to the public sewage treatment system.

4 Water pollutant emission control requirements

4.1 From January 1,.2011 to December 31,.2011, existing companies implement the water pollutant discharge limits specified in Table 1.

Table 1 Limits of water pollutant discharge concentration of existing enterprises

Unit. mg/L (except pH and chroma)

Serial number pollutant project

Limit

Pollutant emission monitoring position direct discharge indirect discharge integrated ink production enterprises other ink production enterprises

1 pH 6～9 6～9 6～9

Corporate wastewater discharge

2 Chromaticity (dilution factor) 80 80 80

3 suspended matter 70 70 100

4 5th Biochemical Oxygen Demand (BOD5) 30 30 50

5 Chemical Oxygen Demand (COD) 150 100 300

6 Petroleum 10 10 10

7 animal and vegetable oil 15 15 15

8 volatile phenol 0.5 0.5 0.5

9 ammonia nitrogen 15 15 25

10 total nitrogen 50 30 50

11 Total Phosphorus 1.0 1.0 2.0

12 anilines 2.0 - 2.01)

13 total copper 0.5 - 0.51)

14 benzene 0.1 0.1 0.1

Continued

Serial number pollutant project

Limit

Pollutant emission monitoring position direct discharge indirect discharge integrated ink production enterprises other ink production enterprises

15 toluene 0.2 0.2 0.2

Total discharge of enterprise wastewater 16 ethylbenzene 0.6 0.6 0.6

17 xylene 0.6 0.6 0.6

18 Total Organic Carbon (TOC) 30 30 60

19 total mercury 0.002

Waste water discharge in workshop or production facility

Gap

20 Alkyl mercury should not be detected

21 total cadmium 0.1

22 total chromium 0.5

23 hexavalent chromium 0.2

24 total lead 0.1

Note. 1) Only applicable to integrated ink manufacturers.

4.2 As of January 1,.2012, existing companies implement the water pollutant discharge limits specified in Table 2.

4.3 Since October 1,.2010, new enterprises have implemented the water pollutant discharge limits specified in Table 2.

Table 2 Limits of water pollutant emission concentration of newly-built enterprises

Unit. mg/L (except pH and chroma)

Serial number pollutant project

Limit

Pollutant emission monitoring position direct discharge indirect discharge integrated ink production enterprises other ink production enterprises

1 pH 6～9 6～9 6～9

Corporate wastewater discharge

2 Chroma (dilution factor) 70 50 80

3 Suspension 40 40 100

4 5th Biochemical Oxygen Demand (BOD5) 25 20 50

5 Chemical oxygen demand (COD) 120 80 300

6 Petroleum 8 8 8

7 animal and vegetable oil 10 10 10

8 volatile phenol 0.5 0.5 0.5

9 ammonia nitrogen 15 10 25

10 total nitrogen 30 20 50

11 total phosphorus 0.5 0.5 2.0

12 anilines 1.0 - 1.01)

13 total copper 0.5 - 0.51)

14 benzene 0.05 0.05

15 toluene 0.2 0.2 0.2

16 ethylbenzene 0.4 0.4 0.4

17 xylene 0.4 0.4 0.4

18 Total Organic Carbon (TOC) 30 20 60

19 total mercury 0.002

Waste water discharge in workshop or production facility

Gap

20 Alkyl mercury should not be detected

21 total cadmium 0.1

22 total chromium 0.5

23 hexavalent chromium 0.2

24 total lead 0.1

Note. 1) Only applicable to integrated ink manufacturers.

4.4 According to the requirements of environmental protection work, the density of land development is high, the environmental carrying capacity begins to weaken, or the water environment capacity is small.

In areas where the ecological environment is fragile and prone to serious water pollution problems and special protection measures are required, the pollution of enterprises should be strictly controlled.

For emissions, companies in the above-mentioned regions implement the special discharge limits for water pollutants specified in Table 3.

Table 3 Special limits for water pollutants

Unit. mg/L (except pH and chroma)

Serial number pollutant project

Limit

Pollutant emission monitoring position direct discharge indirect discharge integrated ink production enterprises other ink production enterprises

1 pH 6～9 6～9 6～9

Corporate wastewater discharge

2 Chromaticity (dilution factor) 30 30 70

3 suspended matter 20 20 40

4 5th Biochemical Oxygen Demand (BOD5) 10 10 25

5 Chemical oxygen demand (COD) 50 50 120

6 Petroleum 1.0 1.0 1.0

7 animal and vegetable oil 1.0 1.0 1.0

8 volatile phenol 0.2 0.2 0.2

9 ammonia nitrogen 5 5 15

10 total nitrogen 15 15 30

11 total phosphorus 0.5 0.5 0.5

12 anilines 0.5 - 0.51)

13 total copper 0.2 - 0.21)

14 benzene 0.05 0.05

15 toluene 0.1 0.1 0.1

16 ethylbenzene 0.4 0.4 0.4

17 xylene 0.4 0.4 0.4

18 Total Organic Carbon (TOC) 15 15 30

19 total mercury 0.001

Workshop or production facility wastewater discharge

20 Alkyl mercury should not be detected

21 total cadmium 0.01

22 total chromium 0.1

23 hexavalent chromium 0.05

24 total lead 0.1

Note. 1) Only applicable to integrated ink manufacturers.

The geographical scope and time for the implementation of special discharge limits for water pollutants shall be governed by the environmental protection administrative department of the State Council or the provincial people's government.

set.

4.5 Conversion of reference water discharge concentration

4.5.1 For the production of different types of ink products, the unit product drainage is shown in Table 4.

Table 4 Base production displacement of ink production enterprise unit products

Unit. m3/t

Product type unit product reference displacement displacement measurement position

Wet lithographic ink, base ink 4.0

Displacement measurement position and pollutant discharge

Monitoring location is the same

Gravure inks, flexo inks, dry lithographic inks and other inks 1.6

pigment

Azo pigment

(Pigment Red, Pigment Yellow) 100

Phthalocyanine pigment

(pigment blue)

Salting out process 120

Non-salting process 40

Other pigments 120

Resin class 1.6

4.5.2 The concentration limit of water pollutant discharge is applicable to the case where the actual displacement of the unit product is not higher than the base displacement of the unit product. If unit

If the actual displacement of the product exceeds the unit discharge of the unit product, the measured water pollutant concentration shall be converted into the reference amount of water pollutant according to formula (1).

The emission concentration and the water concentration of the water pollutants are used as the basis for determining whether the emission is up to standard. Product production and displacement statistics cycle

For a working day.

Production of two or more products at the same time in the production facilities of the enterprise, applicable to different emission control requirements or national pollutant discharge standards in different industries

In the case of quasi-mixed wastewater from production facilities, the most stringent concentration limits specified in the emission standards shall be implemented and

Equation (1) Converts the reference concentration of water pollutants to water.

Where. rho base - water pollutant reference water discharge concentration, mg/L;

Q total - total drainage, m3;

iY -- the output of the i-th product, t;

iQ base - the unit product base displacement of the i-th product, m3/t;

rho实--Measured water pollutant concentration, mg/L.

5 Water pollutant monitoring requirements

5.1 Sampling of wastewater discharged by enterprises shall be carried out according to the type of pollutants to be monitored, at the monitoring location of the specified pollutant discharge, and there shall be wastewater

Facilities should be monitored after the facility. A permanent drain outlet mark shall be provided at the pollutant discharge monitoring position.

5.2 Requirements for the installation of automatic monitoring equipment for pollutant discharge in newly-built enterprises and existing enterprises, in accordance with relevant laws and "Automatic Monitoring and Management of Pollution Sources"

The provisions of the Measures are implemented.

5.3 The frequency, sampling time and other requirements for monitoring the discharge of water pollutants of enterprises shall be in accordance with the national technical regulations on pollution source monitoring.

Regulations are enforced.

5.4 The verification of the output of the enterprise products shall be based on the statutory statements.

5.5 Enterprises shall monitor the discharge status and preserve the original monitoring in accordance with the relevant laws and the Measures for the Administration of Environmental Monitoring.

recording.

5.6 The method standards listed in Table 5 are used to determine the concentration of pollutants discharged from enterprises.

Table 5 Standards for determination of water pollutant concentration

No. Contaminant Project Method Standard Name Method Standard Number

1 pH Water quality Determination of pH value Glass electrode method GB/T 6920-1986

2 Determination of chromaticity of water quality - Dilution multiple method GB/T 11903-1989

3 Determination of suspended solids suspended solids - Gravimetric method GB/T 11901-1989

4 5th Biochemical Oxygen Demand Water Quality 5 Days Biochemical Oxygen Demand (BOD5) Determination Dilution and Inoculation Method HJ 505-2009

5 Chemical oxygen demand

Water quality - Determination of chemical oxygen demand - Dichromate method GB/T 11914-1989

Water quality chemical oxygen demand determination - Rapid digestion spectrophotometric method HJ/T 399-2007

6 Petroleum oils - Determination of petroleum and animal and vegetable oils - Infrared photometric method GB/T 16488-1996

Animal and vegetable oils - Determination of petroleum and animal and vegetable oils - Infrared photometric method GB/T 16488-1996

8 Volatile phenols - Determination of volatile phenols - 4-aminoantipyline spectrophotometric method HJ 503-2009

Continued

No. Contaminant Project Method Standard Name Method Standard Number

9 ammonia nitrogen

Determination of ammonia nitrogen in water quality - Nachite reagent spectrophotometric method HJ 535-2009

Water quality - Determination of ammonia nitrogen - Salicylic acid spectrophotometric method HJ 536-2009

Determination of ammonia nitrogen in water quality - Distillation - Neutralometric titration method HJ 537-2009

Water quality - Determination of ammonia nitrogen - Gas phase molecular absorption spectroscopy HJ/T 195-2005

10 total nitrogen

Determination of total nitrogen in water - Alkaline potassium persulfate digestion - UV spectrophotometric method GB/T 11894-1989

Water quality - Determination of total nitrogen - Gas phase molecular absorption spectroscopy HJ/T.199-2005

11 Determination of total phosphorus in total phosphorus - Ammonium molybdate spectrophotometric method GB/T 11893-1989

12 Determination of aniline compounds of aniline - N-(1-naphthyl) ethylenediamine azo spectrophotometric method GB/T 11889-1989

13 Total copper quality - Determination of copper, zinc, lead and cadmium atomic absorption spectrophotometric method GB/T 7475-1987

14 Determination of benzene-based benzenes - Gas chromatography GB/T 11890-1989

Determination of benzene series in toluene - Gas chromatography GB/T 11890-1989

16 Determination of benzene series of ethylbenzene - Gas chromatographic method GB/T 11890-1989

17 Determination of benzene content in xylene - Gas chromatography GB/T 11890-1989

18 Total Organic Carbon Water Determination of Total Organic Carbon Combustion Oxidation - Non-dispersive Infrared Absorption Method HJ 501-2009

19 total mercury

Water quality - Determination of total mercury - Cold atomic absorption spectrophotometric method GB/T 7468-1987

Water quality - Determination of total mercury - Potassium permanganate - potassium persulfate digestion method

Degree method GB/T 7469-1987

Water quality - Determination of mercury - Cold atomic fluorescence method HJ/T 341-2007

Alkylmercury -- Determination of alkyl mercury -- Gas chromatographic method GB/T 14204-1993

21 total cadmium

Water quality - Determination of copper, zinc, lead and cadmium atomic absorption spectrophotometric method GB/T 7475-1987

Water quality - Determination of cadmium - ...

END: Draft Version (GB 25463-2010)

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 7468-1987 · GB/T 7469-1987 · GB/T 7470-1987 · GB/T 7471-1987 · GB/T 7475-1987 · GB/T 11889-1989 · GB/T 11890-1989 · GB/T 11894-1989 · GB/T 11903-1989 · GB/T 11914-1989

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