消费者权益保护法【双语】（8）商店提供商品应当明码标价。Retailersshallclearlymarkpricesonthecommoditiesprovidedbythem.第二十条运营者应当标明其真实名称和标记。Article20Abusinessoperatorshallclearlyindicateitstruenameandtrade.租赁别人柜台或者场地的运营者，应当标明其真实名称和标记。Abusinessoperatorleasingcountersorvenuesshallclearlyindicateitstruenameandtrade.第二十一条运营者提供商品或者效劳，应当按照国家有关规定或者商业惯例向消费者出具购货凭证或者效劳单据；消费者索要购货凭证或者效劳单据的，运营者必须出具。Article21AbusinessoperatorprovidingcommoditiesorservicesshallissueapurchaseorservicevouchertoconsumersinaccordancewithrelevantStateregulationsorcommercialpractices.Abusinessoperatormustissueapurchaseorservicevoucherwhererequestedtodosobyaconsumer.第二十二条运营者应当保证在正常使用商品或者接受效劳的情况下其提供的商品或者效劳应当具有的质量、功能、用途和有效期限；但消费者在购置该商品或者接受该效劳前已经明白其存在理疵的除外。Article22Abusinessoperatorshallensurethatthecommoditiesorserviceswhichitprovidespossessthequality，functions，usagesanddatesofexpirythattheyshouldhaveduringthenormaluseofsuchcommoditiesorreceiptofsuchservices，exceptwhereaconsumerisalreadyawareoftheexistenceofdefectsbeforepurchasingsuchcommoditiesorreceivingsuchservices.
