翻译"This device is simple to install,customers can install their own,such as the need for our engineers to guide the installation,you must provide the cost of $ 100 per day / days.If you have any que... 翻译"This device is simple to install,customers can install their own,such as the need for our engineers to guide the installation,you must provide the cost of $ 100 per day / days.If you have any que...