Unlike the average electronic product, this market of network communication products required a whole pallet of professional services--certification, installation, maintenance. Once an enterprise selected the products of a certain company, it was difficult to change manufacturers.
尤其網通設備和一般電子商品不同，需要專業的認證、安裝、維修等整套服務，一旦企業採用了某家公司的產品後，就不易更換廠商。