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英文名：Minimum allowable values of energy efficiency and energy efficiency grades for copy machines, printers and fax machines
英文名：Household and similar electrical appliances - Safety - Part 2-52: Particular requirements for oral hygiene appliances
英文名：Household and similar electrical appliances - Safety - Part 1: General requirements
英文名：Software engineering - Product quality - Part 4: Quality in use metrics
英文名：Safety requirements and test methods for electrical self-balancing vehicles
英文名：Electrostatics. Part 5-1:Protection of electronic devices from electrostatic phenomena. General requirements
英文名：Information security technology. Risk assessment specification for information security
英文名：General requirements for the competence of testing and calibration laboratories
英文名：Specification for software research and development cost measurement
英文名：Energy management systems. Requirements with guidance for use
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交易担保 安心支付
服务状态 全程跟踪
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