They range from protection of the environment and global warming to fair pricing of water services and equitable distribution of water for irrigation, industry and household use.

它们涉及的领域从环境保护、全球变暖到水服务的公平定价以及灌溉、工业和家庭用水的公平分配。

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For example higher fertiliser use raises water productivity but adds pollution to the environment.

例如，增加化肥使用量会提高水分生产力，但会对环境造成污染。

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The product can directly use, also can first soluble in water, match into solution type admixtures use, it is applicable for various construction environment or mixing machine requirements.

产品既可以直接使用，亦可以先溶解于水，配成溶液型外加剂使用，适用各种施工环境或搅拌机型的要求。

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