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GB standards are the China national standards; Prefix code GB are Mandatory standards, GB/T are Recommended standards; All products or service must be compliance with GB standards; If you want to export products or services to huge Chinese market, need ensure they are meet the requirements of GB china national standards; We provide Chinese GB standards and English version GB standards Lookup, Translate, Download, Imported Commodity GB standards Testing and Compliance review services. |
| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 45063-2024 |
Footwear-Chemical testing-General sample preparation 鞋类-化学试验-样品制备通则 |
China National Standards Chemical |
 English PDF |
| GB/T 45179-2024 |
Chemical fibers-determination of friction coefficient of short fibers-winch method 化学纤维-短纤维摩擦因数的测定-绞盘法 |
China National Standards Chemical |
English PDF |
| GB/T 45178-2024 |
Chemical fibers - Determination of antioxidant activity - DPPH and ABTS methods 化学纤维-抗氧化活性测定-DPPH和ABTS法 |
China National Standards Chemical |
English PDF |
| GB/T 45065-2024 |
Leather and fur - Chemical =Electrical test - Determination of residual volatile methylcyclosiloxane 皮革和毛皮-化学试验-挥发性甲基环硅氧烷残留量的测定 |
China National Standards Chemical |
English PDF |
| GB/T 45042-2024 |
Textiles-Quantitative Chemical analysis-Mixtures of pre-oxidized polyacrylonitrile fibers and certain other fibers 纺织品-定量化学分析-聚丙烯腈预氧化纤维与某些其他纤维的混合物 |
China National Standards Chemical |
English PDF |
| GB/T 29292-2024 |
Footwear - Guidelines for the control of key Chemical substances in footwear and footwear components 鞋类-鞋类和鞋类部件中重点化学物质管控指南 |
China National Standards Chemical |
English PDF |
| GB 16171.1-2024 |
Emission standards for atmospheric pollutants in the coking Chemical industry 炼焦化学工业大气污染物排放标准 |
China National Standards Chemical |
English PDF |
| GB/T 19701.3-2024 |
Surgical implants-Ultra-high molecular weight polyethylene-Part 3: Accelerated aging Chemical methods 外科植入物-超高分子量聚乙烯-第3部分：加速老化方法 |
China National Standards Chemical |
English PDF |
| GB/T 23367.1-2024 |
Chemical analysis methods for lithium cobalt oxide - Part 1: Determination of cobalt content - EDTA - Titration and potentiometric titration 钴酸锂化学分析方法-第1部分：钴含量的测定-EDTA-滴定法和电位滴定法 |
China National Standards Chemical |
English PDF |
| GB/T 45020-2024 |
Chemical analysis methods for niobium and hafnium alloys - Determination of trace impurity elements - Inductively coupled plasma mass spectrometry 铌铪合金化学分析方法-痕量杂质元素的测定-电感耦合等离子体质谱法 |
China National Standards Chemical |
English PDF |
| GB/T 4698.29-2024 |
Chemical analysis methods for sponge titanium, titanium and titanium alloys-Part 29: Determination of aluminum, carbon, chromium, copper, iron, manganese, molybdenum, nickel, silicon, tin, vanadium and zirconium content-Optical Direct reading spectrometry 海绵钛、钛及钛合金化学分析方法-第29部分：铝、碳、铬、铜、铁、锰、钼、镍、硅、锡、钒、锆含量的测定-光电直读光谱法 |
China National Standards Chemical |
English PDF |
| GB/T 11067.7-2024 |
Chemical analysis method for silver - Part 7 ：Determination of gold and palladium content-Inductively coupled plasma emission spectrometry 银化学分析方法-第7部分：金、钯量的测定-电感耦合等离子体发射光谱法 |
China National Standards Chemical |
English PDF |
| GB/T 3260.1-2024 |
Chemical analysis method for tin - Part 1: Determination of copper, lead, zinc, cadmium, silver, nickel and cobalt content - Flame atomic absorption spectrometry 锡化学分析方法-第1部分：铜、铅、锌、镉、银、镍和钴含量的测定-火焰原子吸收光谱法 |
China National Standards Chemical |
English PDF |
| GB/T 9489-2024 |
Chemical analysis method for corundum powder 刚玉粉化学分析方法 |
China National Standards Chemical |
English PDF |
| GB/T 44943-2024 |
Footwear-Chemical testing Method - Determination of o-phenylphenol content - High performance liquid chromatography - tandem mass spectrometry 鞋类-化学试验方法-邻苯基苯酚含量的测定-高效液相色谱-串联质谱法 |
China National Standards Chemical |
English PDF |
| GB/T 32440.2-2024 |
Footwear-Chemical test methods-Determination of phthalates-Part 2: Non-solvent extraction method 鞋类-化学试验方法-邻苯二甲酸酯的测定-第2部分：非溶剂萃取法 |
China National Standards Chemical |
English PDF |
| GB/T 18882.4-2024 |
Chemical analysis methods for ionic rare earth ores and mixed rare earth oxides-Part 4: Determination of ferric oxide content-Inductively coupled plasma emission spectrometry 离子型稀土矿混合稀土氧化物化学分析方法-第4部分：三氧化二铁含量的测定-电感耦合等离子体发射光谱法 |
China National Standards Chemical |
English PDF |
| GB/T 12690.20-2024 |
Chemical analysis methods for non-rare earth impurities in rare earth metals and their oxides-Part 20: Determination of trace fluorine and chlorine in rare earth oxides-Ion chromatography 稀土金属及其氧化物中非稀土杂质化学分析方法-第20部分：稀土氧化物中微量氟、氯的测定-离子色谱法 |
China National Standards Chemical |
English PDF |
| GB/T 25187-2024 |
Surface Chemical analysis-Auger electron spectroscopy-Selection of instrument performance parameters 表面化学分析-俄歇电子能谱-选择仪器性能参数的表述 |
China National Standards Chemical |
English PDF |
| GB/T 44958-2024 |
Chemical equipment safety management specifications 化工设备安全管理规范 |
China National Standards Chemical |
English PDF |
| GB/T 44945-2024 |
Textiles-Quantitative Chemical analysis-Mixtures of mulberry silk and tussah silk 纺织品-定量化学分析-桑蚕丝与柞蚕丝的混合物 |
China National Standards Chemical |
English PDF |
| GB 11984-2024 |
Technical specifications for chlorine safety in Chemical enterprises 化工企业氯气安全技术规范 |
China National Standards Chemical |
English PDF |
| GB 17681-2024 |
Technical specifications for safety monitoring of major hazardous sources of hazardous Chemicals 危险化学品重大危险源安全监控技术规范 |
China National Standards Chemical |
English PDF |
| GB/T 32151.47-2024 |
Greenhouse gas emission accounting and reporting requirements-Part 47: Chemical fiber manufacturers 温室气体排放核算与报告要求-第47部分：化纤生产企业 |
China National Standards Chemical |
English PDF |
| GB/T 44803-2024 |
Technical guidelines for emergency supplies for electroChemical energy storage power stations 电化学储能电站应急物资技术导则 |
China National Standards Chemical |
English PDF |
| GB/T 44767-2024 |
Technical guidelines for safety monitoring information systems for electroChemical energy storage power stations 电化学储能电站安全监测信息系统技术导则 |
China National Standards Chemical |
English PDF |
| GB/T 44707-2024 |
Chemicals - Enhanced rapid biodegradability test 化学品-强化快速生物降解性试验 |
China National Standards Chemical |
English PDF |
| GB/T 4698.26-2024 |
Chemical analysis methods for titanium sponge, titanium and titanium alloys - Part 2 Part 6: Determination of tantalum and tungsten content - Inductively coupled plasma atomic emission spectrometry 海绵钛、钛及钛合金化学分析方法-第26部分：钽和钨含量的测定-电感耦合等离子体原子发射光谱法 |
China National Standards Chemical |
English PDF |
| GB/T 5124.5-2024 |
Chemical analysis methods for cemented carbide - Part 5: Determination of tantalum and niobium content - Inductively coupled plasma emission spectrometry 硬质合金化学分析方法-第5部分：钽、铌含量的测定-电感耦合等离子体发射光谱法 |
China National Standards Chemical |
English PDF |
| GB/T 13748.23-2024 |
Chemical analysis methods for magnesium and magnesium alloys - Part 23: Determination of element content - Wavelength color =Dispersed X-ray fluorescence spectrometry 镁及镁合金化学分析方法-第23部分：元素含量的测定-波长色散X射线荧光光谱法 |
China National Standards Chemical |
English PDF |
| GB/T 44710-2024 |
Guidelines for the construction of pilot bases in Chemical parks 化工园区中试基地建设导则 |
China National Standards Chemical |
English PDF |
| GB/T 12690.21-2024 |
Chemical analysis methods for non-rare earth impurities in rare earth metals and their oxides-Part 21: Determination of sulfate content in rare earth oxides-Barium sulfate turbidimetry 稀土金属及其氧化物中非稀土杂质化学分析方法-第21部分：稀土氧化物中硫酸根含量的测定-硫酸钡比浊法 |
China National Standards Chemical |
English PDF |
| GB/T 44708-2024 |
Chemicals - Earthworm reproduction toxicity test 化学品-蚯蚓繁殖毒性试验 |
China National Standards Chemical |
English PDF |
| GB/T 44706-2024 |
Chemicals - Sediments - Toxicity test of river clams in water systems 化学品-沉积物-水系统中河蚬毒性试验 |
China National Standards Chemical |
English PDF |
| GB/T 44764-2024 |
Petroleum, petroChemical and natural gas industries - Metal materials resistant to sulfide stress cracking in corrosive petroleum refining environments 石油、石化和天然气工业-腐蚀性石油炼制环境中抗硫化物应力开裂的金属材料 |
China National Standards Chemical |
English PDF |
| GB/T 44692.2-2024 |
Equipment integrity in hazardous Chemical enterprises - Part 2: Technical implementation guidelines 危险化学品企业设备完整性-第2部分：技术实施指南 |
China National Standards Chemical |
English PDF |
| GB/T 44692.1-2024 |
Equipment integrity in hazardous Chemical enterprises - Part 1: Management system requirements 危险化学品企业设备完整性-第1部分：管理体系要求 |
China National Standards Chemical |
English PDF |
| GB/T 44693.2-2024 |
Process stability in hazardous Chemical enterprises - Part 2: Technical specifications for control loop performance evaluation and optimization 危险化学品企业工艺平稳性-第2部分：控制回路性能评估与优化技术规范 |
China National Standards Chemical |
English PDF |
| GB/T 44693.1-2024 |
Hazardous Chemical companies Process stability - Part 1: Management guidelines 危险化学品企业工艺平稳性-第1部分：管理导则 |
China National Standards Chemical |
English PDF |
| GB/T 3045-2024 |
Ordinary abrasives - Carbon Chemical analysis methods for silicon dioxide 普通磨料-碳化硅化学分析方法 |
China National Standards Chemical |
English PDF |
| GB/T 625-2024 |
Chemical reagents - sulfuric acid 化学试剂-硫酸 |
China National Standards Chemical |
English PDF |
| GB/T 674-2024 |
Chemical reagents-Powdered copper oxide 化学试剂-粉状氧化铜 |
China National Standards Chemical |
English PDF |
| GB/T 1288-2024 |
Chemical reagents-Potassium sodium tartrate tetrahydrate-(potassium sodium tartrate) 化学试剂-四水合酒石酸钾钠-（酒石酸钾钠） |
China National Standards Chemical |
English PDF |
| GB/T 15896-2024 |
Chemical reagents-Formic acid 化学试剂-甲酸 |
China National Standards Chemical |
English PDF |
| GB/T 623-2024 |
Chemical reagents - perchloric acid 化学试剂-高氯酸 |
China National Standards Chemical |
English PDF |
| GB/T 4893.10-2024 |
Tests for physical and Chemical properties of furniture surface paint films - Part 10: Scratch resistance determination method 家具表面漆膜理化性能试验-第10部分：耐划痕测定法 |
China National Standards Chemical |
English PDF |
| GB/T 11064.1-2024 |
Chemical analysis methods for lithium carbonate, lithium hydroxide monohydrate and lithium chloride - Part 1: Determination of lithium carbonate content - Titration method 碳酸锂、单水氢氧化锂、氯化锂化学分析方法-第1部分：碳酸锂含量的测定-滴定法 |
China National Standards Chemical |
English PDF |
| GB/T 44480-2024 |
Chemicals-Acute oral toxicity test for beautiful spotted lizard 化学品-丽斑麻蜥急性经口毒性试验 |
China National Standards Chemical |
English PDF |
| GB/T 44640-2024 |
Chemicals-Test for thyroid activity of African clawed frog embryos 化学品-非洲爪蟾胚胎甲状腺活性试验 |
China National Standards Chemical |
English PDF |
| GB/T 44482-2024 |
Chemicals - Multi-generation reproduction toxicity test of thermophilic Tetrahymena 化学品-嗜热四膜虫多代繁殖毒性试验 |
China National Standards Chemical |
English PDF |
| GB/T 5069-2024 |
Chemical analysis methods for magnesium-aluminum refractory materials 镁铝系耐火材料化学分析方法 |
China National Standards Chemical |
English PDF |
| GB/T 693-2024 |
Chemical reagents - Sodium acetate trihydrate (sodium acetate) 化学试剂-三水合乙酸钠（乙酸钠） |
China National Standards Chemical |
English PDF |
| GB/T 44324-2024 |
Chemical park low-carbon operation management specifications 化工园区低碳运行管理规范 |
China National Standards Chemical |
English PDF |
| GB/T 44394-2024 |
Guidelines for identification and protection of Chemical dust explosion hazards 化学品粉尘爆炸危害识别和防护指南 |
China National Standards Chemical |
English PDF |
| GB/T 44396-2024 |
Chemicals-Acute toxicity test for embryos of rare crucian carp 化学品-稀有鮈鲫胚胎急性毒性试验 |
China National Standards Chemical |
English PDF |
| GB 30000.1-2024 |
Chemical classification and labeling specifications - Part 1 Division: General rules 化学品分类和标签规范-第1部分：通则 |
China National Standards Chemical |
English PDF |
| GB/T 23950-2024 |
General method for determination of heavy metals in inorganic Chemical products 无机化工产品中重金属测定通用方法 |
China National Standards Chemical |
English PDF |
| GB/T 44224-2024 |
Secondary batteries and battery packs - symbolic identification of Chemical substances 二次电池和电池组-化学物质的符号标识 |
China National Standards Chemical |
English PDF |
| GB/T 14420-2024 |
Analysis Methods for Boiler Water and Cooling Water - Determination of Chemical Oxygen Demand - Potassium Dichromate Rapid Method 锅炉用水和冷却水分析方法-化学耗氧量的测定-重铬酸钾快速法 |
China National Standards Chemical |
English PDF |
| GB/T 20878-2024 |
Stainless steel - Grades and Chemical composition 不锈钢-牌号及化学成分 |
China National Standards Chemical |
English PDF |
| GB/T 5881-2024 |
Test methods for physical and Chemical properties of ramie 苎麻理化性能试验方法 |
China National Standards Chemical |
English PDF |
| GB/T 44165.6-2024 |
Detection methods for key Chemical substances in consumer products-Part 6: Acrylamide 消费品中重点化学物质检测方法-第6部分：丙烯酰胺 |
China National Standards Chemical |
English PDF |
| GB/T 44165.5-2024 |
Detection methods for key Chemical substances in consumer products-Part 5: Phenol 消费品中重点化学物质检测方法-第5部分：苯酚 |
China National Standards Chemical |
English PDF |
| GB/T 44165.4-2024 |
Detection methods for key Chemical substances in consumer products-Part 4: 1,4-dichlorobenzene 消费品中重点化学物质检测方法-第4部分：1,4-二氯苯 |
China National Standards Chemical |
English PDF |
| GB/T 44165.3-2024 |
Detection methods for key Chemical substances in consumer products-Part 3: Ethyl chloride 消费品中重点化学物质检测方法-第3部分：氯代乙烷 |
China National Standards Chemical |
English PDF |
| GB/T 44165.2-2024 |
Detection methods for key Chemical substances in consumer products-Part 2: Styrene migration 消费品中重点化学物质检测方法-第2部分：苯乙烯迁移量 |
China National Standards Chemical |
English PDF |
| GB/T 44165.1-2024 |
Detection methods for key Chemical substances in consumer products-Part 1: Short-chain chlorinated paraffins 消费品中重点化学物质检测方法-第1部分：短链氯化石蜡 |
China National Standards Chemical |
English PDF |
| GB/T 36548-2024 |
Test procedures for access to the power grid for electroChemical energy storage power stations 电化学储能电站接入电网测试规程 |
China National Standards Chemical |
English PDF |
| GB/T 5270-2024 |
Metallic coatings on metal substrates - Electrodeposited and Chemically deposited layers - Review of adhesion strength test methods 金属基体上的金属覆盖层-电沉积和化学沉积层-附着强度试验方法评述 |
China National Standards Chemical |
English PDF |
| GB/T 44134-2024 |
Planning guidelines for electroChemical energy storage power stations configured in power systems 电力系统配置电化学储能电站规划导则 |
China National Standards Chemical |
English PDF |
| GB/T 44133-2024 |
Technical guidelines for intelligent electroChemical energy storage power stations 智能电化学储能电站技术导则 |
China National Standards Chemical |
English PDF |
| GB/T 44111-2024 |
ElectroChemical energy storage power station maintenance test procedures 电化学储能电站检修试验规程 |
China National Standards Chemical |
English PDF |
| GB/T 44112-2024 |
Operation control specifications for electroChemical energy storage power stations connected to the grid 电化学储能电站接入电网运行控制规范 |
China National Standards Chemical |
English PDF |
| GB/T 44114-2024 |
Operation control specifications for electroChemical energy storage systems connected to low-voltage distribution networks 电化学储能系统接入低压配电网运行控制规范 |
China National Standards Chemical |
English PDF |
| GB/T 44113-2024 |
Grid connection management specifications for user-side electroChemical energy storage systems 用户侧电化学储能系统并网管理规范 |
China National Standards Chemical |
English PDF |
| GB/T 44117-2024 |
Model parameter test procedures for electroChemical energy storage power station 电化学储能电站模型参数测试规程 |
China National Standards Chemical |
English PDF |
| GB/T 44031-2024 |
Manganese ore - Chemical analysis methods - General 锰矿石-化学分析方法-通则 |
China National Standards Chemical |
English PDF |
| GB/T 36547-2024 |
Technical regulations for the connection of electroChemical energy storage power stations to the power grid 电化学储能电站接入电网技术规定 |
China National Standards Chemical |
English PDF |
| GB/T 44045-2024 |
Rotor pumps for petroleum, petroChemical and natural gas industries 石油、石化和天然气工业用转子泵 |
China National Standards Chemical |
English PDF |
| GB-44019-2024 |
Safety requirements for tank cleaning of Chemical tankers 化学品船清洗舱安全作业要求 |
China National Standards Chemical |
English PDF |
| GB/T 626-2006 |
Chemical reagents - Nitric acid 化学试剂-硝酸 |
China National Standards Chemical |
English PDF |
| GB/T 609-2018 |
Chemical reagents - General method for determination of total nitrogen 化学试剂-总氮量测定通用方法 |
China National Standards Chemical |
English PDF |
| GB/T 11066.12-2024 |
Methods for Chemical analysis of gold - Part 12: - Determination of silver, copper, iron, lead, bismuth, antimony, magnesium, nickel, manganese, palladium, chromium, platinum, rhodium, titanium, zinc, arsenic, tin, silicon, cobalt, calcium, potassium, lithium, sodium, tellurium, vanadium, zirconium, cadmium, molybdenum, rhenium, and aluminum content - Inductively coupled plasma atomic emission spectrometry 金化学分析方法-第12-部分：-银、铜、铁、铅、铋、锑、镁、镍、锰、钯、铬、铂、铑、钛、锌、砷、锡、硅、钴、钙、钾、锂、钠、碲、钒、锆、镉、钼、铼、铝含量的测定-电感耦合等离子体原子发射光谱法 |
China National Standards Chemical |
English PDF |
| GB/T 12690.12-2024 |
Non-rare earth impurities in rare earth metals and their oxides - Chemical analysis methods - Part 12: Determination of thorium and uranium content - Inductively coupled plasma mass spectrometry 稀土金属及其氧化物中非稀土杂质-化学分析方法-第12部分：钍、铀量的测定-电感耦合等离子体质谱法 |
China National Standards Chemical |
English PDF |
| GB/T 13748.20-2024 |
Chemical analysis methods for magnesium and magnesium alloys-Part 20: Determination of element content-Inductively coupled plasma atomic emission spectrometry 镁及镁合金化学分析方法-第20部分：元素含量的测定-电感耦合等离子体原子发射光谱法 |
China National Standards Chemical |
English PDF |
| GB/T 16477.1-2024 |
Chemical analysis methods for rare earth ferrosilicon alloys and magnesium ferrosilicon alloys-Part 1: Determination of total rare earth content and fifteen rare earth elements 稀土硅铁合金及镁硅铁合金化学分析方法-第1部分：稀土总量、十五个稀土元素含量的测定 |
China National Standards Chemical |
English PDF |
| GB/T 28629-2024 |
Chemical analysis methods for free silicon dioxide in cement clinker 水泥熟料中游离二氧化硅化学分析方法 |
China National Standards Chemical |
English PDF |
| GB/T 2910.11-2024 |
Textiles - Quantitative Chemical analysis - Part 11: Mixtures of certain cellulose fibers with certain other fibers (sulfuric acid method) 纺织品-定量化学分析-第11部分：某些纤维素纤维与某些其他纤维的混合物（硫酸法） |
China National Standards Chemical |
English PDF |
| GB/T 33488.5-2024 |
Inspection methods for plastic welded pressure-bearing equipment for Chemical industry-Part 5: Ultrasonic testing by time-of-flight diffraction 化工用塑料焊接制承压设备检验方法-第5部分：衍射时差法超声检测 |
China National Standards Chemical |
English PDF |
| GB/T 4074.4-2024 |
Test methods for winding wires - Part 4: Chemical properties 绕组线试验方法-第4部分：化学性能 |
China National Standards Chemical |
English PDF |
| GB/T 4103.18-2024 |
Methods for Chemical analysis of lead and lead alloys - Part 18: Determination of silver, copper, bismuth, arsenic, antimony, tin, zinc, iron, cadmium, nickel, magnesium, aluminum, calcium, selenium and tellurium content - Inductively coupled plasma mass spectrometry 铅及铅合金化学分析方法-第18部分：银、铜、铋、砷、锑、锡、锌、铁、镉、镍、镁、铝、钙、硒和碲含量的测定-电感耦合等离子体质谱法 |
China National Standards Chemical |
English PDF |
| GB/T 42513.6-2024 |
Chemical analysis methods for nickel alloys-Part 6: Determination of molybdenum content-Inductively coupled plasma atomic emission spectrometry 镍合金化学分析方法-第6部分：钼含量的测定-电感耦合等离子体原子发射光谱法 |
China National Standards Chemical |
English PDF |
| GB/T 42513.7-2024 |
Chemical analysis methods for nickel alloys-Part 7: Determination of cobalt, chromium, copper, iron and manganese content-Flame atomic absorption spectrometry 镍合金化学分析方法-第7部分：钴、铬、铜、铁和锰含量的测定-火焰原子吸收光谱法 |
China National Standards Chemical |
English PDF |
| GB/T 43868-2024 |
Start-up acceptance procedures for electroChemical energy storage power stations 电化学储能电站启动验收规程 |
China National Standards Chemical |
English PDF |
| GB/T 43891-2024 |
Non-metallic Chemical equipment - Test method for heat transfer coefficient and flow resistance performance of impermeable graphite heat exchangers 非金属化工设备-不透性石墨换热器传热系数和流阻性能测试方法 |
China National Standards Chemical |
English PDF |
| GB/T 43955-2024 |
Inspection, marking and packaging of pure and blended yarns of cotton and Chemical fibers 棉及化纤纯纺、混纺纱线检验、标志与包装 |
China National Standards Chemical |
English PDF |
| GB/T 43970-2024 |
General rules for Chemical vapor generation - atomic fluorescence spectrometry analysis methods 化学蒸气发生-原子荧光光谱分析方法通则 |
China National Standards Chemical |
English PDF |
| GB/T 5121.8-2024 |
Chemical analysis methods for copper and copper alloys - Part 8: Determination of oxygen, nitrogen and hydrogen content 铜及铜合金化学分析方法-第8部分：氧、氮、氢含量的测定 |
China National Standards Chemical |
English PDF |
| GB/T 5484-2024 |
Chemical analysis methods for gypsum 石膏化学分析方法 |
China National Standards Chemical |
English PDF |
| GB/T 5762-2024 |
Chemical analysis methods for limestone, quicklime and slaked lime for building materials 建材用石灰石、生石灰和熟石灰化学分析方法 |
China National Standards Chemical |
English PDF |
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