答案：B

考查虚拟语气。that the new technology _____ the problems on conveying the products是名词suggestion的同位语从句，从句谓语要用(should)+do的虚拟语气；且主语the new technology和动词apply之间是动宾关系，所以要用被动语态，即(should) be applied to结构，；且to是介词，后面要用动词的ing形式。所以选B。