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7月12日获悉:作为投影产品生产厂商的3M 公司,直接对最终用户提供售后维修服务,承诺在有备件的情况下1-2天维修完毕。3M 公司投资几十万美元相继在全国9个城市设立了维修服务中
July 12 was informed that: As a manufacturer of 3M projector products, directly to end-users to provide after-sales maintenance services, promised in the case of spare parts 1-2 days maintenance is completed. 3M companies have invested hundreds of thousands of dollars in 9 cities throughout the country have set up maintenance services