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Title Standard No. Implemented On
Method for Inspecting Quality of Water Discharged from Treatment of Vessel Sewage - Method of Test for Oxygen Dissolved in Water CB* 3328.4-19881989-3-1
Machining Workpiece Quota Time Standard Milling MachineHB 4986.4-19881988-7-1
Vanadium; Determination of iron content; Phenanthroline spectrophotometric methodGB/T 8639.4-19881989-1-1
Interchangeable Parts for Van-type Vehicle - Door Lock Mechanism IIQJ 1383.9-19881988-10-1
Fasteners-Counterbores for hexagon socket head serewsand slotted cheese head screwsGB/T 152.3-19881989-1-1
Test Run Procedure for Attitude Control EngineQJ 1338-19881988-12-31
Nickel base alloy powder; Determination of copper content; Neocuproine-chloroform extraction spectrophotometric methodGB/T 8638.8-19881989-1-1
Personnel System Data - Classification and Code for Occupation QJ 1193.50-19881988-10-1
Hygienic STANDARD for lead content of pencil coatingGB 8771-19881988-1-2
Method of the strength test for brazed and soldered seamGB/T 8619-19881988-8-1
General Technical Specification for Relief Valve in Hydraulic-Servo SystemQJ 1361-19881986-7-3
Copper and copper alloys; Rectangular and square waveguide tubeGB/T 8893-19881989-2-1
Test methods of tensile properties for thermoplastic pipes--Polyvinyl chloride (PVC) pipesGB/T 8804.1-19881988-7-1
Requirements for the Installation of Aircraft Instrument and Instrument PanelHB 6152-19881988-8-1
Steel wire ropes for elevatorsGB 8903-19881989-7-1
Textile fabrics; Test method of glossGB/T 8686-19881988-7-1
Hygienic determination method of sulfur dioxide in air of residential areas; Tetrachloromercurate (TCM)-pararosaniline spectrophotometric methodGB/T 8913-19881988-1-2
Machining Workpiece Quota Time Standard InsertingHB 4986.13-19881988-7-1
Wire for steel wire ropes useGB/T 8919-19961996-10-1
Packing of grain-Flour bagsGB 8665-19881988-7-1
Diagnostic criteria and principles of management of occupational acute aromatic and nitro-compounds (excluding TNT) poisoningGB 8788-19881988-9-1
Hot-rolled quality carbon structural steel plates and wide stripsGB 711-19881989-7-1
Methods for chemical analysis of ferromolybdenum; The infrared absorption method for the determination of sulfur contentGB/T 5059.9-19881989-3-1
Lead and lead-antimony alloy tubeGB/T 1472-19881989-2-1
Machining Workpiece Quota Time Standard PlanerHB 4986.12-19881988-7-1
Test method of difficult-flammability for building materialsGB/T 8625-19881988-10-1
Dimensions shape weight and tolerances for cold-rolled plates and sheetsGB 708-19881989-7-1
Technical Specifications for Chemical Oxide Film of Aluminium and Aluminium Alloy QJ 1375-19881988-10-1
The sampling methods of the main products in the salt industryGB/T 8618-19881988-6-1
Production Instruction for Chemical Oxide Film of Aluminium and Aluminium Alloy QJ 1376-19881988-10-1
Tab washers for round nutGB/T 858-19881989-1-1
Test method of flammability for building materialsGB/T 8626-19881988-10-1
Food additive propyl p-hydroxybenzoateGB 8851-19881988-11-1
The ultrasonic inspection method for wrought high strength steelsGB/T 8652-19881989-2-1
Fasteners-Counterbores for hexagon socket head serewsand slotted cheese head screwsGB 152.3-19881989-1-1
Numbering System of Standard Technological Equipment - Numbering Method for Ordinary Technological Equipment QJ 993.2-19881988-10-1
Methods for chemical analysis of ferrophosphorus; The infrared absorption method for the determination of carbon contentGB/T 8705.3-19881989-3-1
Thermal sprayed coatings--Determination of adhesion strengthGB/T 8642-19881989-1-1
Edible wheat starchGB/T 8883-19881988-7-1
Nickel base alloy powder; Determination manganese content; Sodium(potassium periodate spectrophotometric method)GB/T 8638.5-19881989-1-1
~JJG 534-19881989-1-1
Terminology for die-casting dieGB/T 8847-19881988-9-1
Hygienic specifications of candied fruit factoryGB 8956-19881989-1-1
Continual hot-dip zinc-coated steel sheets and stripsGB/T 2518-19881989-7-1
Soft mechanical joint grey cast iron fittingsGB 8715-19881989-3-1
Textiles--Woven fabrics--Construction--Methods of analysis--Determination of the mass of warp and weft per unit area of fabricFZ/T 01094-19991999-2-1
Interchangeable Parts for Van-type Vehicle - Lifting Appliance for Square CabinQJ 1383.25-19881988-10-1
Seed zones of chinese forest trees-Seed zones of larix principis-rupprechtii mayrGB/T 8822.10-19881988-8-1
Seed zones of chinese forest trees-Seed zones of larix olgensis henryGB/T 8822.9-19881988-8-1
Alimentary tract hose biopsy sampling forcepsYY 91076-19991990-1-1
Method for Inspecting Quality of Water Discharged from Treatment of Vessel Sewage - Method of Test for Suspended SolidCB* 3328.2-19881989-3-1
Test method for bending of rigid cellular plasticsGB/T 8812-19881988-7-1
Nickel base alloy powder; Determination of silicon content; Gravimetric method after dehydration by perchloric acidGB/T 8638.3-19881989-1-1
Nickel base alloy powder; Determination of phosphorus content; N-butyl alcohol-chloroform extraction spectrophotometric methodGB/T 8638.12-19881989-1-1
Methods for chemical analysis of ferrophosphorus; The infrared absorption method for the determination of carbon contentGB/T 8705.1-19881989-3-1
Nickel base alloy powder; Determination of cubit content; Nitroso-R salt spectrophotometric methodGB/T 8638.7-19881989-1-1
Test Method for Peel Force of Flexible Laminated PlasticsGB 8808-19881988-7-1
Test Method for Condensable Volatile of Materials in Vacuum QJ 1371-19881986-7-3
Nickel base alloy powder; Determination of boron content; Alkalimetric methodGB/T 8638.1-19881989-1-1
Oil of cedarwood (Cupressus funebris endlicher)-Guizhou,ChinaGB/T 8793-19881988-6-1
Food additive EthoxyquinHG/T 2924-19881988-11-1
Hygienic STANDARDs for seat arrangement and illumination in classroom with televisionGB 8772-19881988-1-2
Interchangeable Parts for Van-type Vehicle - Window FrameQJ 1383.13-19881988-10-1
Test methods of tensile properties for thermoplastic pipes--Polyethylene (PE) pipesGB/T 8804.2-19881988-7-1
Specifications for Thrust Measurement of Attitude Control Engine QJ 1339-19881988-12-31
Interchangeable Parts for Van-type Vehicle - Rubber Sealing Strip for Doors QJ 1383.3-19881988-10-1
Grey cast iron pipes with rubber ring of ladder-lip-shapedGB 8714-19881989-3-1
Textiles; Woven fabrics; Definitions of general terms and basic weavesGB/T 8683-19881988-7-1
Interchangeable Parts for Van-type Vehicle - Window QJ 1383.12-19881988-10-1
Standard Selection Scope for Pressure Vessels QJ 1381-19881988-10-1
Seed zones of chinese forest trees-Seed zones of larix gmelini ruprGB/T 8822.8-19881988-8-1
Inside diameter required precision seamless steel tube for hydraulic and pneumatic cylinder useGB/T 8713-19881989-3-1
High-Precision Hydraulic Filter for Aviation - General Technical SpecificationHB 6146-19881988-7-1
Vanadium; Determination of iron content; Isoamyl alcohol extraction spectrophotometric methodGB/T 8639.5-19881989-1-1
Technical Specification for Spiral Narrow-Band ClampHB 6149-19881988-8-1
Textiles--Woven fabrics--Construction--Methods of analysis--Determination of linear density of yarn removed from fabricFZ/T 01093-19991999-2-1
Double end studs bm=1.5dGB 899-19881989-1-1
Edible corn starchGB/T 8885-19881988-7-1
Interchangeable Parts for Van-type Vehicle - Door Frame QJ 1383.20-19881988-10-1
Method for determination of dry matter and water content in fruit and vegetable productsGB 8858-19881988-7-1
Category of Marine Rolling and Welding L-shaped SteelCB* 3269-19881989-3-1
Methods for chemical analysis of silicochromium; The combustion-neutralization titration method for the determination of sulfur contentGB/T 4699.7-19881989-3-1
Terminology for diesGB/T 8845-19881988-9-1
Interchangeable Parts for Van-type Vehicle - Orifice Frame QJ 1383.16-19881988-10-1
Electro cardiac moniting equipmentYY 91079-19991990-1-1
Dimensions, shape, weight and tolerances for hot-rolled plates and sheetsGB 709-19881989-7-1
Interchangeable Parts for Van-type Vehicle - Hook LadderQJ 1383.24-19881988-10-1
Test method for water absorption of rigid cellular plasticsGB/T 8810-19881988-7-1
Method for Inspecting Quality of Water Discharged from Treatment of Vessel Sewage - Method of Test for Biochemical Oxygen DemandCB* 3328.3-19881989-3-1
Process Specification for Bonded Forming of Ellipsoidal Aluminium Panels/FRP Honeycomb Sandwich Structures QJ 1379-19881988-10-1
Interchangeable Parts for Van-type Vehicle - Window Hinge QJ 1383.6-19881988-10-1
General terms of technology and equipment for grain and oil industryGB 8874-19881988-7-1
Interchangeable Parts for Van-type Vehicle - Rubber Sealing Strip for Window QJ 1383.2-19881988-10-1
Machining Workpiece Quota Time Standard TongingHB 4986.8-19881988-7-1
Vanadium; Determination of vanadium content; Potassium permanganate-ammonium ferrous sulphate volumetric methodGB/T 8639.1-19881989-1-1
Methods for chemical analysis of silicomanganese alloy; The gasometric method for the determination of carbon contentGB/T 5686.6-19881989-3-1
Intra-uterine suction curettesYY 91025-19991988-10-1
Fasteners-Clearance holes for rivetsGB/T 152.1-19881989-1-1
Interchangeable Parts for Van-type Vehicle - Window Lock MechanismQJ 1383.10-19881988-10-1
Square taper washers for I sectionGB/T 852-19881989-1-1
Interchangeable Parts for Van-type Vehicle - Door Hinge QJ 1383.4-19881988-10-1
Tab washers with long tab and wingGB/T 855-19881989-1-1
Limit for exhaust gas smoke of marine diesel engineGB 8840-19881988-10-1
Nickel; Determination of iron content; Sulfosalicylic acid spectrophotometric methodGB/T 8647.1-19881989-1-1
Seed zones of chinese forest trees-Seed zones of platycladus orientalis (linn)francoGB/T 8822.11-19881988-8-1
地面设备QJ 1383.23-19881988-10-1
Element pulse-echo ultrasonic transducer -- General specifications and measuring methodYY/T 91089-19991986-1-1
Nickel base alloy powder; Determination of tungsten content; Cinchonine gravimetric methodGB/T 8638.11-19881989-1-1
Anodizing of aluminium and aluminium alloys; Insulation check by measurement of breakdown potentialGB/T 8754-19881989-2-1
Method for determination of dimensional change of fabrics induced by free steamFZ/T 20021-19991999-2-1
Interchangeable Parts for Van-type Vehicle - Supporting Rod QJ 1383.7-19881988-10-1
Method for the determination of tensile strength of carbonaceous materialsGB/T 8721-19881989-3-1
Vanadium; Determination of chromium content; Diphenylcarbazide spectrophotometric methodGB/T 8639.2-19881989-1-1
Square taper washers for slot sectionGB/T 853-19881989-1-1
Bilateral Tolerance Limit Coefficient Table of Normal DistributionQJ 1384-19881988-10-1
Test method for pendulum impact resistance of plastic filmsGB 8809-19881988-7-1
Specifications for the Selection of Lubricating Grease and Instrument Lubricating Oil for Airborne Equipment HB/Z 128-19881988-10-1
Steel wire ropes; TerminologyGB/T 8706-19881989-3-1
Terminology of property and quality for grain,oil-bearing material and their productsGB 8934-19881988-7-1
Seed zones of chinese forest trees-Seed zones of pinus massoniana lamb.GB/T 8822.6-19881988-8-1
Steels for vane of steam turbineGB/T 8732-19881989-3-1
Lubricated metallic powders--Determination of lubricant content--Soxhlet extraction methodGB/T 8643-19881989-1-1
Method for the determination of thermal conductivity of graphite materials at median temperatureGB 8722-19881989-3-1
Interchangeable Parts for Van-type Vehicle - Right DoorQJ 1383.18-19881988-10-1
Methods for chemical analysis of ferrophosphorus; The combustion-neutralization titration method for the determination of carbon contentGB/T 8705.4-19881989-3-1
Method for dimension measuring of plastic pipesGB 8806-19881988-7-1
Nickel base alloy powder; Determination of iron content; Titanium trichloride-potassium dichromate titrimetric methodGB/T 8638.6-19881989-1-1
Name of Imported Instruments in E-C TranslationQJ 1349-19881988-10-1
Methods for chemical analysis of iron, steel and alloy; The flame atomic absorption spectrometric method for the determination of cobalt contentGB/T 223.65-19881989-2-1
Nickel; Determination of phosphorus content; Molybdenum blue spectrophotometric methodGB/T 8647.4-19881989-1-1
Interchangeable Parts for Van-type Vehicle - Curtain Mechanism IQJ 1383.14-19881988-10-1
Terms of concrete shipGB/T 8839-19881988-10-1
Textiles--Woven fabrics--Construction--Method of analysis--Determination of twist in yarn removed from fabricFZ/T 01092-19991999-2-1
Foundry cokeGB 8729-19881989-3-1
Personnel System Data - Codes for Social MoonlightsQJ 1193.48-19881988-10-1
Interchangeable Parts for Van-type Vehicle - Rubber Sealing Strip for Orifice QJ 1383.1-19881988-10-1
Double end studs bm=1.25dGB 898-19881989-1-1
Methods for chemical analysis of iron, steel and alloy; The ammonium phosphomolybdate volumetric method for the determination of phosphorus contentGB 223.61-19881989-2-1
Machining Workpiece Quota Time Standard Turret LatheHB 4986.3-19881988-7-1
Collection of metallographs on titanium and titanium alloy termsGB 8755-19881989-2-1
Technical Specification for Polyester Melt Filter Element HBM 67-19881988-8-1
Interchangeable Parts for Van-type Vehicle - Left DoorQJ 1383.19-19881988-10-1
Vanadium; Determination of silicon content; N-butyl alcohol extraction spectrophotometric methodGB/T 8639.6-19881989-1-1
Gallium arsenide single crystal; Determination of dislocation densityGB/T 8760-19881989-2-1
Terminology of mould for plasticsGB/T 8846-19881988-9-1
Nickel; Determination of aluminium content; Chromazurol S; P-octyl plyethylene glycol phenyl ether-tetradecyl phridinium bromine mixed micellar solubilization spectrophotometric methodGB/T 8647.2-19881989-1-1
Free-cutting steel; Technical requirementsGB/T 8731-19881989-3-1
Methods for chemical analysis of ferromolybdenum; The infrared absorption method for the determination of carbon contentGB/T 5059.7-19881989-3-1
Food additive ethyl p-hydroxybenzoateGB 8850-19881988-11-1
Copper and copper alloys; Circular waveguide tubeGB/T 8894-19881989-2-1
Star GlobeCB* 645-19881989-3-1
Anodizing of aluminium and aluminium alloys-Estimationof loss of absorptive power of anodic oxide coatings after sealing-Dye spot test with prior acid treatmentGB/T 8753-19881989-2-1
Nickel base alloy powder; Determination of chromium content; Persulfate oxidation titrimetric methodGB/T 8638.4-19881989-1-1
Terminology of rice milling industryGB/T 8875-19881988-7-1
Interchangeable Parts for Van-type Vehicle - Orifice Lock MechanismQJ 1383.11-19881988-10-1
Care labeling code of textiles and apparelGB 8685-19881988-7-1
Nickel base alloy powder; Determination of copper content; Thiosulfate-iodimetric methodGB/T 8638.9-19881989-1-1
Visual Field of Aircraft Cabin HB 6153-19881988-8-1
Machining Workpiece Quota Time Standard General RulesHB 4986.1-19881988-7-1
Fasteners-Counterbores for hexagon bolts and nutsGB 152.4-19881989-1-1
Personnel System Data - Classification and Code for National Economy IndustryQJ 1193.49-19881988-10-1
Terminology of flour milling industryGB/T 8872-19881988-7-1
Intermediate frequency of FM receiversGB/T 8578-19881988-8-1
Interchangeable Parts for Van-type Vehicle - Scuttle Hatch QJ 1383.17-19881988-10-1
General Technical Specification for Non-isolated Fuel Tank of Aircraft Hydraulic SystemHB 6151-19881988-8-1
Vocabulary of biochemical instruments. UV-VIS spectrophotometryYY 91060-19991988-8-1
Nickel; Determination of silicon content; Molybdenum blue spectrophotometric methodGB/T 8647.3-19881989-1-1
Interchangeable Parts for Van-type Vehicle - Mounting Strap QJ 1383.21-19881988-10-1
Reliability Requirements and Testing Methods for Aerospace Hydraulic Pumps QJ 1353-19881988-10-1
Methods for chemical analysis of iron, steel and alloy; The volumetric method for determination of manganese content by ammonium nitrate oxidationGB 223.4-19881989-2-1
Polyamide 1010 ResinHB 5394-19871988-7-1
Steel wire ropes; Packing,marking and certificate; General requirementsGB/T 2104-19881989-3-1
Test method for unplasticized PVC fittings by fallingGB 8801-19881988-7-1
Anodizing of aluminium and aluminium alloys; Check of continuity of thin anodic oxide coatings; Copper sulphate testGB/T 8752-19881989-2-1
Textiles--Designation of yarnsGB/T 8693-19881988-8-1
Antioxidant AGB/T 8827-19881988-10-1
Fasteners-Countersinks for countersunk head serewsGB/T 152.2-19881989-1-1
Determination of dynamic adsorbed water for molecular sieveGB 8770-19881988-12-1
Termnology of grain and oils - Rice millingGB/T 8875-20082009-1-1
Nickel base alloy powder; Determination of molybdenum content; Thiocyanate spectrophotometric methodGB/T 8638.10-19881989-1-1
Acceptance, packing, marking and certification of pipeGB 2102-19881989-3-1
Hygienic standard for lithium hydride in the air of workplaceGB 8779-19881988-1-2
Method of test for pleat retention in durable press fabricsFZ/T 20022-19991999-2-1
附:实施《蓝芯全玻璃注射器》专标的有关规定YY 91061-19991988-8-1
Interchangeable Parts for Van-type Vehicle - Ventilation Device QJ 1383.22-19881988-10-1
Textiles--Woven fabrics--Construction--Methods of analysis--Determination of crimp or take-up of yarn in fabricFZ/T 01091-19991999-2-1
Grading Standard for Long Hole Inspection of Aluminium Alloy Casting by X-Ray Radiography (Negative Film is Not Provided)HB 5395-19881988-7-1
Grading Standard for Dispersion and Looseness of Aluminium Alloy Casting by X-Ray Radiography (Negative Film is Not Provided)HB 5397-19881988-7-1
Interchangeable Parts for Van-type Vehicle - Orifice Hinge QJ 1383.5-19881988-10-1
Terminology of grain and oils—Oils and fats industryGB/T 8873-20082009-1-20
Classification and Code for Instruments QJ 1348-19881988-10-1
Machining Workpiece Quota Time Standard DrillingHB 4986.7-19881988-7-1
Specifications for the design of automatic fire-alarming systemsGBJ 116-19881988-11-1
See zones of chinese forest trees-Seed zones of pinus tabulaeformis carrGB/T 8822.1-19881988-8-1
Wrought heavy non-ferrous metal products--Packing marking transporting and storingGB/T 8888-19881989-2-1
Nickel; Determination of cadmium,cobalt,copper,manganese,lead and zinc contents; Flame atomic absorption spectrophotometric methodGB/T 8647.6-19881989-1-1
Nickel; Determination of arsenic,antimony,bismuth,tin and lead contents; Electrothermal atomic absorption spectrophotometric methodGB/T 8647.7-19881989-1-1
External-Pressure Test Method for the Chamber Case of Solid Rocket MotorQJ 1368-19881986-7-3
Analysis Method for Chemical Oxidizing Solution of Aluminium and Aluminium Alloy QJ 1377-19881988-10-1
Interchangeable Parts for Van-type Vehicle - Door Lock Mechanism IQJ 1383.8-19881988-10-1
Collection of metallographs on defects of crystalline germaniumGB 8756-19881989-2-1
External tab washersGB/T 856-19881989-1-1
Lead and lead-antimony alloy plateGB/T 1470-19881989-2-1
The technical terms of floating construction plantGB/T 8843-19881988-10-1
Nomenclature for Model of Robot Product QJ 1352-19881988-10-1
Hygienic determination method of carbon monoxide in air of residential areas; Method of replacing mercuryGB 8911-19881988-12-1
Attitude Control Engine Thrust Series QJ 1358-19881986-7-3
Machining Workpiece Quota Time Standard BroachingHB 4986.5-19881988-7-1
Methods for chemical analysis of ferrotungsten; The combustion-neutralization titration method for the determination of sulfur contentGB 7731.13-19881989-3-1
Food additive; Zinc gluconateGB 8820-19881988-8-1
Test method for specular gloss of plasticsGB 8807-19881988-7-1
General specification for base, cap and lead frame of discrete semiconductor devicesSJ 2850-19881988-10-1
648/T300 Epoxy Carbon Fiber Prepreg HB 5392-19871988-7-1
Machining Workpiece Quota Time Standard MillingHB 4986.6-19881988-7-1
Metal Elastic SupportCB* 3321-19881989-3-1
Quality steel wire ropesGB/T 8918-19961996-10-1
Thermal sprayed metallic coatings; Rockwell hardness testGB/T 8640-19881989-1-1
Bending Test Method for the Chamber Case of Solid Rocket MotorQJ 1367-19881986-7-3
Method for the determination of urease activity in soya bean productsGB/T 8622-19881988-8-1
Interchangeable Parts for Van-type Vehicle - Curtain Mechanism IIQJ 1383.15-19881988-10-1
Determination of deflection for rigid plastic pipesGB/T 8805-19881988-7-1
Methods for chemical analysis of chromium metal; The combustion-neutralization titration method for the determination of sulfur contentGB/T 4702.17-19881989-3-1
Food additive-Lactulose liquidGB 8816-19881988-7-1
Specification for Crimp Connection of Wire for Crimping Type Connector Assembly HB 6144-19881988-7-1
Vegetables; Nomenclature; First listGB 8854-19881988-7-1
Seed zones of chinese forest trees-Seed zones of pinus sylvestris L.Var.mongolica litrGB/T 8822.5-19881988-8-1
Test methods of gas absorption characteristic for non-evaporation gettering materials and productsGB 8763-19881989-2-1
Energy saver for AC contactorsGB/T 8871-20012002-1-1
Method for Inspecting Quality of Water Discharged from Treatment of Vessel Sewage - Method of Test for Free Chlorine and Total ChlorineCB* 3328.6-19881989-3-1
Grading Standard for Sponge Shape Looseness of Aluminium Alloy Casting by X-Ray Radiography (Negative Film is Not Provided)HB 5396-19881988-7-1
Machining Workpiece Quota Time Standard Common LatheHB 4986.2-19881988-7-1
Washers with cone faceGB/T 850-19881989-1-1
Terminology of oils and fats industryGB/T 8873-19881988-7-1
Tab washers with long tab and wingGB 855-19881989-1-1
Machining Workpiece Quota Time Standard Vertical LatheHB 4986.10-19881988-7-1
Machining Workpiece Quota Time Standard ShaperHB 4986.11-19881988-7-1
Nickel base alloy powder; Determination of aluminium content; Chrome azurol S spectrophotometric methodGB/T 8638.2-19881989-1-1
General terminology of technology and equipment for grain and oils industryGB/T 8874-20082009-1-20
Hygienic standard for methyl acrylate in the air of workplaceGB 8773-19881988-1-2
Machining Workpiece Quota Time Standard BoringHB 4986.9-19881988-7-1
General Specification for Airborne Solid Pulsed Laser RangefinderHB 6161-19881988-9-1
Instructions on Manufacturing Process of Clear Parts of Aircraft Organic Glass HB/Z 125-19881988-7-1
Methods for chemical analysis of iron, steel and alloy; The sodium(potassium)periodate photometric method for the determination of manganese contentGB 223.63-19881989-2-1
Chlorinated paraffines-Determination of chlorine content-Mercurimetric methodHG 3017-19881988-10-1
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