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 42870-2023 |
Non-destructive Testing Acoustic emission testing methods and evaluation criteria for fiber-reinforced polymers 无损检测 纤维增强聚合物的声发射检测方法和评价准则 |
China National Standards Testing |
English PDF |
GB/T 42712-2023 |
Design principles and calibration methods of Chinese dummies for mechanical damage Testing 力学损伤测试用中国假人设计原则与标定方法 |
China National Standards Testing |
English PDF |
GB/T 7704-2017 |
Non-destructive Testing X-ray stress measurement method "No. 1 Amendment" 无损检测 X射线应力测定方法《第1号修改单》 |
China National Standards Testing |
English PDF |
GB/T 12604.10-2023 |
Non-destructive Testing - Terminology - Part 10: Magnetic memory testing 无损检测 术语 第10部分:磁记忆检测 |
China National Standards Testing |
English PDF |
GB/T 17626.11-2023 |
Electromagnetic compatibility - Testing and measurement techniques - Part 11: Immunity tests for voltage dips, short interruptions and voltage changes for equipment with input current less than or equal to 16 A per phase 电磁兼容 试验和测量技术 第11部分:对每相输入电流小于或等于16 A设备的电压暂降、短时中断和电压变化抗扰度试验 |
China National Standards Testing |
English PDF |
GB/T 12604.13-2023 |
Non-destructive Testing - Terminology - Part 13: Array ultrasonic testing 无损检测 术语 第13部分:阵列超声检测 |
China National Standards Testing |
English PDF |
GB/T 26140-2023 |
Nondestructive Testing - Neutron Diffraction Method for Residual Stress Measurement 无损检测 残余应力测量的中子衍射方法 |
China National Standards Testing |
English PDF |
GB/T 7233.2-2023 |
Steel castings - Ultrasonic Testing - Part 2: High pressure steel castings 铸钢件 超声检测 第2部分:高承压铸钢件 |
China National Standards Testing |
English PDF |
GB/T 30564-2023 |
Non-destructive Testing Non-destructive testing personnel training institutions 无损检测 无损检测人员培训机构 |
China National Standards Testing |
English PDF |
GB/T 41815.3-2023 |
Information technology - Biometric presence attack detection - Part 3: Testing and reporting 信息技术 生物特征识别呈现攻击检测 第3部分:测试与报告 |
China National Standards Testing |
English PDF |
GB/Z 42624-2023 |
Vacuum technology - Vacuum gauges - Testing and reporting procedures for outgassing rates 真空技术 真空计 放气率的测试和报告程序 |
China National Standards Testing |
English PDF |
GB/T 42567.3-2023 |
Reference conditions and procedures for Testing transmitters for industrial process measurement Part 3: Specific procedures for temperature transmitters 工业过程测量变送器试验的参比条件和程序 第3部分:温度变送器的特定程序 |
China National Standards Testing |
English PDF |
GB/T 42567.2-2023 |
Reference conditions and procedures for Testing transmitters for industrial process measurement Part 2: Specific procedures for pressure transmitters 工业过程测量变送器试验的参比条件和程序 第2部分:压力变送器的特定程序 |
China National Standards Testing |
English PDF |
GB/T 42567.1-2023 |
Reference conditions and procedures for Testing transmitters for industrial process measurement Part 1: General procedures for all types of transmitters 工业过程测量变送器试验的参比条件和程序 第1部分:所有类型变送器的通用程序 |
China National Standards Testing |
English PDF |
GB/T 42694-2023 |
Textiles - Testing and evaluation of surface wetting resistance - Contact angle and rolling angle method 纺织品 表面抗润湿性能的检测和评价 接触角和滚动角法 |
China National Standards Testing |
English PDF |
GB/T 42698-2023 |
Textiles - Testing and evaluation of anti-see-through properties 纺织品 防透视性能的检测和评价 |
China National Standards Testing |
English PDF |
GB/T 42592-2023 |
Wind turbines - Ultrasonic Testing method for wind rotor blades 风力发电机组 风轮叶片超声波检测方法 |
China National Standards Testing |
English PDF |
GB/T 29268.7-2023 |
Information technology - Biometric performance Testing and reporting - Part 7: On-card biometric comparison algorithm testing 信息技术 生物特征识别性能测试和报告 第7部分:卡上生物特征识别比对算法测试 |
China National Standards Testing |
English PDF |
GB/T 42554-2023 |
General requirements for environmental Testing of measuring instruments 计量器具环境试验的通用要求 |
China National Standards Testing |
English PDF |
GB/Z 17626.33-2023 |
Electromagnetic compatibility - Testing and measurement techniques - Part 33: Measurement methods for high power transient parameters 电磁兼容 试验和测量技术 第33部分:高功率瞬态参数测量方法 |
China National Standards Testing |
English PDF |
GB/T 7233.1-2023 |
Steel castings - Ultrasonic Testing - Part 1: Steel castings for general purposes 铸钢件 超声检测 第1部分:一般用途铸钢件 |
China National Standards Testing |
English PDF |
GB/T 30268.3-2023 |
Information technology—Conformity Testing for the biometric application programming interface (BioAPI)—Part 3: Test assertions for the BioAPI framework 信息技术 生物特征识别应用程序接口(BioAPI)的符合性测试 第3部分:BioAPI框架的测试断言 |
China National Standards Testing |
English PDF |
GB/T 17626.12-2023 |
Electromagnetic compatibility - Testing and measurement techniques - Part 12: Ring wave immunity test 电磁兼容 试验和测量技术 第12部分:振铃波抗扰度试验 |
China National Standards Testing |
English PDF |
GB/T 42399.3-2023 |
Non-destructive Testing instruments - Performance and inspection of phased array ultrasonic equipment - Part 3: Combined systems 无损检测仪器 相控阵超声设备的性能与检验 第3部分:组合系统 |
China National Standards Testing |
English PDF |
GB/T 42399.2-2023 |
Non-destructive Testing instruments - Performance and inspection of phased array ultrasonic equipment - Part 2: Probes 无损检测仪器 相控阵超声设备的性能与检验 第2部分:探头 |
China National Standards Testing |
English PDF |
GB/T 42399.1-2023 |
Non-destructive Testing instruments - Performance and inspection of phased array ultrasonic equipment - Part 1: Instruments 无损检测仪器 相控阵超声设备的性能与检验 第1部分:仪器 |
China National Standards Testing |
English PDF |
GB/T 17729-2023 |
Air Quality Requirements and Testing Methods in Long-distance Buses 长途客车内空气质量要求及检测方法 |
China National Standards Testing |
English PDF |
GB/T 28847.6-2023 |
Building automation and control systems - Part 6: Conformance Testing of data communication protocols 建筑自动化和控制系统 第6部分:数据通信协议一致性测试 |
China National Standards Testing |
English PDF |
GB/T 41655-2022 |
Nondestructive Testing Ultrasonic Testing Welding, Rolling and Explosive Composite Cladding Testing Technology 无损检测 超声检测 焊接、轧制和爆炸复合覆层检测技术 |
China National Standards Testing |
English PDF |
GB/T 2423.16-2022 |
Environmental Testing - Part 2: Test methods - Test J and guidance: Mold growth 环境试验 第2部分:试验方法 试验J和导则:长霉 |
China National Standards Testing |
English PDF |
GB/T 2423.54-2022 |
Environmental Testing - Part 2: Test methods - Test Xc: Fluid contamination 环境试验 第2部分:试验方法 试验Xc:流体污染 |
China National Standards Testing |
English PDF |
GB/T 2423.24-2022 |
Environmental Testing - Part 2: Test methods - Test S: Simulation of solar radiation on the ground and guidelines for solar radiation tests and weathering tests 环境试验 第2部分:试验方法 试验S:模拟地面上的太阳辐射及太阳辐射试验和气候老化试验导则 |
China National Standards Testing |
English PDF |
GB/Z 41634-2022 |
Guidelines for Periodic Inspection of Equipment for Electromagnetic Compatibility Testing 电磁兼容检测用设备期间核查指南 |
China National Standards Testing |
English PDF |
GB/T 41644-2022 |
Fireworks and firecrackers - Inspection and Testing methods 烟花爆竹 检验检测方法 |
China National Standards Testing |
English PDF |
GB/T 32250.4-2022 |
Agricultural and forestry machinery Testing of sprayers in use Part 4: Stationary and semi-mobile sprayers 农林机械 在用喷雾机的检测 第4部分:固定式和半移动式喷雾机 |
China National Standards Testing |
English PDF |
GB/T 32250.3-2022 |
Agricultural and forestry machinery - Testing of in-use sprayers - Part 3: Sprayers for shrub and tree crops 农林机械 在用喷雾机的检测 第3部分:灌木与乔木作物用喷雾机 |
China National Standards Testing |
English PDF |
GB/T 32250.2-2022 |
Agricultural and forestry machinery Testing of sprayers in use Part 2: Horizontal boom sprayers 农林机械 在用喷雾机的检测 第2部分:水平喷杆式喷雾机 |
China National Standards Testing |
English PDF |
GB/T 32250.1-2022 |
Agricultural and forestry machinery Testing of sprayers in use Part 1: General 农林机械 在用喷雾机的检测 第1部分:总则 |
China National Standards Testing |
English PDF |
GB/T 21838.2-2022 |
Metallic materials - Instrumented indentation tests for hardness and material parameters - Part 2: Verification and calibration of Testing machines 金属材料 硬度和材料参数的仪器化压入试验 第2部分:试验机的检验和校准 |
China National Standards Testing |
English PDF |
GB/T 16886.1-2022 |
Biological evaluation of medical devices Part 1: evaluation and Testing in the process of risk management 医疗器械生物学评价 第1部分:风险管理过程中的评价与试验 |
China National Standards Testing |
English PDF |
GB/T 41408-2022 |
Sensory analysis methodology - General guidelines for Testing consumer preferences in controlled areas 感官分析 方法学 受控区域消费者喜好测试一般导则 |
China National Standards Testing |
English PDF |
GB/Z 41476.4-2022 |
Non destructive Testing instruments - radiation protection rules for X-ray equipment up to 1mV - Part 4: Calculation of control area 无损检测仪器 1MV以下X射线设备的辐射防护规则 第4部分:控制区域的计算 |
China National Standards Testing |
English PDF |
GB/Z 41476.3-2022 |
Non destructive Testing instruments - radiation protection rules for X-ray equipment below 1mV - Part 3: calculation formulas and charts for radiation protection of X-ray equipment below 450kv 无损检测仪器 1MV以下X射线设备的辐射防护规则 第3部分:450kV以下X射线设备辐射防护的计算公式和图表 |
China National Standards Testing |
English PDF |
GB/Z 41476.2-2022 |
Non destructive Testing instruments - radiation protection rules for X-ray equipment below 1mV - Part 2: technical requirements for protection 无损检测仪器 1MV以下X射线设备的辐射防护规则 第2部分:防护技术要求 |
China National Standards Testing |
English PDF |
GB/Z 41476.1-2022 |
Non destructive Testing instruments - radiation protection rules for X-ray equipment up to 1mV - Part 1: General safety technical requirements 无损检测仪器 1MV以下X射线设备的辐射防护规则 第1部分:通用安全技术要求 |
China National Standards Testing |
English PDF |
GB/Z 41399-2022 |
Nondestructive Testing Instrument Industrial X-ray digital imaging system 无损检测仪器 工业X射线数字成像系统 |
China National Standards Testing |
English PDF |
GB/T 13217.3-2022 |
Testing method of ink fineness 油墨细度检验方法 |
China National Standards Testing |
English PDF |
GB/T 4162-2022 |
Ultrasonic Testing method for forged and rolled steel bars 锻轧钢棒超声检测方法 |
China National Standards Testing |
English PDF |
GB/T 41470-2022 |
Quality requirements and Testing methods of digital textbooks in primary and secondary schools 数字教材 中小学数字教材质量要求和检测方法 |
China National Standards Testing |
English PDF |
GB/T 41420-2022 |
Testing and evaluation of shape memory properties of textiles 纺织品 形状记忆性能检测和评价 |
China National Standards Testing |
English PDF |
GB/T 29461-2012 |
No. 1 Amendment List for Ultrasonic Testing of Polyethylene Pipeline Electrofusion Joints 聚乙烯管道电熔接头超声检测《第1号修改单》 |
China National Standards Testing |
English PDF |
GB/T 21355-2022 |
Non-destructive Testing—Industrial computed radiography with storage phosphor imaging plates—Classification of systems 无损检测 基于存储磷光成像板的工业计算机射线照相检测 系统分类 |
China National Standards Testing |
English PDF |
GB/T 26642-2022 |
Non-destructive Testing—Industrial computed radiography with storage phosphor imaging plates—General principles for testing of metallic materials using X-rays and gamma rays 无损检测 基于存储磷光成像板的工业计算机射线照相检测 金属材料X射线和伽玛射线检测总则 |
China National Standards Testing |
English PDF |
GB/T 26116-2022 |
Internal combustion engine coaxial pumps—Testing method 内燃机共轴泵 试验方法 |
China National Standards Testing |
English PDF |
GB/T 16507.6-2022 |
Water-tube boilers—Part 6: Inspection, Testing and acceptance 水管锅炉 第6部分:检验、试验和验收 |
China National Standards Testing |
English PDF |
GB/T 41309-2022 |
Nanotechnology, Endotoxin in vitro Testing of nanomaterials, Limulus reagent method 纳米技术 纳米材料的内毒素体外测试 鲎试剂法 |
China National Standards Testing |
English PDF |
GB/T 20278-2022 |
Information security technology—Security technical requirements and Testing assessment approaches for network vulnerability scanners 信息安全技术 网络脆弱性扫描产品安全技术要求和测试评价方法 |
China National Standards Testing |
English PDF |
GB/T 33643-2022 |
Non-destructive Testing—Test methods for leak detection by means of acoustic emission 无损检测 声发射泄漏检测方法 |
China National Standards Testing |
English PDF |
GB/T 26117-2022 |
Miniature electric pumps—Testing method 微型电泵 试验方法 |
China National Standards Testing |
English PDF |
GB/T 15970.11-2022 |
Corrosion of metals and alloys - Stress corrosion Testing - Part 11: Guidelines for hydrogen embrittlement and hydrogen-induced cracking tests of metals and alloys 金属和合金的腐蚀 应力腐蚀试验 第11部分:金属和合金氢脆和氢致开裂试验指南 |
China National Standards Testing |
English PDF |
GB/T 41966-2022 |
Phased array ultrasonic Testing method for seamless steel pipe 无缝钢管相控阵超声检测方法 |
China National Standards Testing |
English PDF |
GB/T 42132.1-2022 |
Information technology - Machine readable test data for biometric Testing and reporting - Part 1: Test reports 信息技术 用于生物特征识别测试和报告的机读测试数据 第1部分:测试报告 |
China National Standards Testing |
English PDF |
GB/T 17626.19-2022 |
Electromagnetic compatibility-Testing and measurement techniques-Part 19: 2kHz~150kHz differential mode conducted disturbance and communication signal immunity test of AC power port 电磁兼容 试验和测量技术 第19部分:交流电源端口2kHz~150kHz差模传导骚扰和通信信号抗扰度试验 |
China National Standards Testing |
English PDF |
GB/T 42140-2022 |
Information technology; Cloud computing; Cloud operating system performance Testing indicators and measurement methods 信息技术 云计算 云操作系统性能测试指标和度量方法 |
China National Standards Testing |
English PDF |
GB/T 2611-2022 |
Testing machine general technical requirements 试验机 通用技术要求 |
China National Standards Testing |
English PDF |
GB/T 16491-2022 |
Electronic universal Testing machine 电子式万能试验机 |
China National Standards Testing |
English PDF |
GB/T 19557.29-2022 |
Guidelines for Testing of plant variety specificity (distinguishability), identity and stability of Brassica oleracea 植物品种特异性(可区别性)、一致性和稳定性测试指南 甘蓝 |
China National Standards Testing |
English PDF |
GB/T 19557.11-2022 |
Guidelines for Testing for species specificity (distinguishability), identity and stability of the plant species Actinidia 植物品种特异性(可区别性)、一致性和稳定性测试指南 猕猴桃属 |
China National Standards Testing |
English PDF |
GB/T 19557.8-2022 |
Guidelines for Testing of plant variety specificity (distinguishability), consistency and stability Lee 植物品种特异性(可区别性)、一致性和稳定性测试指南 李 |
China National Standards Testing |
English PDF |
GB/T 19557.6-2022 |
Guidelines for Testing of plant variety specificity (distinguishability), consistency and stability of Ramie 植物品种特异性(可区别性)、一致性和稳定性测试指南 苎麻 |
China National Standards Testing |
English PDF |
GB/T 19557.25-2022 |
Guidance on Testing for plant variety specificity (distinguishability), identity and stability of Cucumber 植物品种特异性(可区别性)、一致性和稳定性测试指南 黄瓜 |
China National Standards Testing |
English PDF |
GB/T 19557.27-2022 |
Guidelines for Testing of plant variety specificity (distinguishability), identity and stability of watermelon 植物品种特异性(可区别性)、一致性和稳定性测试指南 西瓜 |
China National Standards Testing |
English PDF |
GB/T 19557.26-2022 |
Guidelines for Testing of plant variety specificity (distinguishability), identity and stability Apple 植物品种特异性(可区别性)、一致性和稳定性测试指南 苹果 |
China National Standards Testing |
English PDF |
GB/T 19557.21-2022 |
Guidance on Testing for plant variety specificity (distinguishability), identity and stability of Melon 植物品种特异性(可区别性)、一致性和稳定性测试指南 甜瓜 |
China National Standards Testing |
English PDF |
GB/T 19557.17-2022 |
Guidelines for Testing of plant variety specificity (distinguishability), identity and stability of Pepper 植物品种特异性(可区别性)、一致性和稳定性测试指南 辣椒 |
China National Standards Testing |
English PDF |
GB/T 19557.13-2022 |
Guidelines for Testing of plant variety specificity (distinguishability), identity and stability of Tomato 植物品种特异性(可区别性)、一致性和稳定性测试指南 番茄 |
China National Standards Testing |
English PDF |
GB/T 19557.18-2022 |
Guidelines for Testing of plant variety specificity (distinguishability), identity and stability Cotton 植物品种特异性(可区别性)、一致性和稳定性测试指南 棉花 |
China National Standards Testing |
English PDF |
GB/T 19557.16-2022 |
Guidelines for Testing of plant variety specificity (distinguishability), identity and stability Peanuts 植物品种特异性(可区别性)、一致性和稳定性测试指南 花生 |
China National Standards Testing |
English PDF |
GB/T 19557.7-2022 |
Guidelines for Testing of plant variety specificity (distinguishability), identity and stability of rice 植物品种特异性(可区别性)、一致性和稳定性测试指南 水稻 |
China National Standards Testing |
English PDF |
GB/T 16857.9-2022 |
Geometric Product Specification (GPS) Coordinate Measuring System (CMS) Acceptance and Re-inspection Testing Part 9: Coordinate Measuring Machines Equipped with Multiple Probing Systems 产品几何技术规范(GPS) 坐标测量系统(CMS)的验收检测和复检检测 第9部分:配备多种探测系统的坐标测量机 |
China National Standards Testing |
English PDF |
GB/T 16857.8-2022 |
Geometric Product Specification (GPS) Coordinate Measuring System (CMS) Acceptance and Re-inspection Testing Part 8: Coordinate Measuring Machines Using Optical Distance Sensors 产品几何技术规范(GPS) 坐标测量系统(CMS)的验收检测和复检检测 第8部分:使用光学距离传感器的坐标测量机 |
China National Standards Testing |
English PDF |
GB/T 16857.12-2022 |
Geometric product specification (GPS) Acceptance Testing and re-inspection testing of coordinate measuring systems (CMS) Part 12: Coordinate measuring machines with articulated arms 产品几何技术规范(GPS) 坐标测量系统(CMS)的验收检测和复检检测 第12部分:关节臂式坐标测量机 |
China National Standards Testing |
English PDF |
GB/Z 42085-2022 |
Pneumatics - Component reliability assessment based on accelerated life Testing - General guidelines and procedures 气动 基于加速寿命试验的元件可靠性评估 通用指南和程序 |
China National Standards Testing |
English PDF |
GB/T 42186-2022 |
Operational Specifications for Cold Chain Logistics of Biological Samples for Medical Testing 医学检验生物样本冷链物流运作规范 |
China National Standards Testing |
English PDF |
GB/T 27476.7-2022 |
Testing laboratory safety - Part 7: Ergonomic factors 检测实验室安全 第7部分:工效学因素 |
China National Standards Testing |
English PDF |
GB/T 18216.10-2022 |
Equipment for Testing, measuring or monitoring electrical safety protection measures for low-voltage power distribution systems up to and including 1000 V AC and 1500 V DC Part 10: Combined measuring equipment for testing, measuring or monitoring protecti 交流1000V和直流1500V及以下低压配电系统电气安全 防护措施的试验、测量或监控设备 第10部分:用于防护措施的试验、测量或监控的组合测量设备 |
China National Standards Testing |
English PDF |
GB/T 18216.6-2022 |
Equipment for Testing, measuring or monitoring electrical safety protection measures for low-voltage power distribution systems up to and including 1000 V AC and 1500 V DC Part 6: Effectiveness of residual current devices (RCDs) in TT, TN and IT systems 交流1000V和直流1500V及以下低压配电系统电气安全 防护措施的试验、测量或监控设备 第6部分:TT、TN和IT系统中剩余电流装置(RCD)的有效性 |
China National Standards Testing |
English PDF |
GB/T 42008-2022 |
General specification for variable frequency power supply for Testing 试验用变频电源通用规范 |
China National Standards Testing |
English PDF |
GB/T 26866-2022 |
Testing specification for power time synchronization system 电力时间同步系统检测规范 |
China National Standards Testing |
English PDF |
GB/T 29268.6-2022 |
Information technology - Biometric recognition performance Testing and reporting - Part 6: Test methods for operational evaluation 信息技术 生物特征识别性能测试和报告 第6部分:运行评价的测试方法 |
China National Standards Testing |
English PDF |
GB/T 29268.5-2022 |
Information technology - Biometric performance Testing and reporting - Part 5: Access control scenarios and grading mechanisms 信息技术 生物特征识别性能测试和报告 第5部分:访问控制场景与分级机制 |
China National Standards Testing |
English PDF |
GB/T 41844-2022 |
Specifications for the prevention and control of human-originated contamination of DNA Testing products DNA检验用产品人源性污染防控规范 |
China National Standards Testing |
English PDF |
GB/T 11047.2-2022 |
Textiles - Testing and evaluation of snagging properties of fabrics - Part 2: Rolling box method 纺织品 织物勾丝性能的检测和评价 第2部分:滚箱法 |
China National Standards Testing |
English PDF |
GB/T 41905-2022 |
Software and System Engineering Software Testing Tool Capabilities 软件与系统工程 软件测试工具能力 |
China National Standards Testing |
English PDF |
GB/T 16825.1-2022 |
Metallic materials - Inspection and calibration of static uniaxial Testing machines - Part 1: Tensile and (or) compression testing machines - Inspection and calibration of force measuring systems 金属材料 静力单轴试验机的检验与校准 第1部分:拉力和(或)压力试验机 测力系统的检验与校准 |
China National Standards Testing |
English PDF |
GB/T 41704-2022 |
Testing method for cathode material of lithium ion battery - Determination of magnetic foreign matter content and residual alkali content 锂离子电池正极材料检测方法 磁性异物含量和残余碱含量的测定 |
China National Standards Testing |
English PDF |
GB/T 26957-2022 |
Destructive Testing of welds in metallic materials - Tensile test methods for cross joints and lap joints 金属材料焊缝破坏性试验 十字接头和搭接接头拉伸试验方法 |
China National Standards Testing |
English PDF |
GB/T 22131-2022 |
Ultrasonic Testing Method for the Inner Surface of Cylindrical Forgings 筒形锻件内表面超声波检测方法 |
China National Standards Testing |
English PDF |
GB/T 41812-2022 |
General rules for performance Testing of automatic liquid pipetting workstations 自动移液工作站性能检测通则 |
China National Standards Testing |
English PDF |
GB/T 30966.5-2022 |
Wind turbines - Communications for wind farm monitoring systems - Part 5: Conformance Testing 风力发电机组 风力发电场监控系统通信 第5部分:一致性测试 |
China National Standards Testing |
English PDF |
Find out:2112Items | To Page of: First -Previous-Next -Last | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 |