(Every time I write a bid, I have to draw a picture and make a plan. Every time I use CAD, I always feel bad. Later, I used visio to make pictures. There are many datacom products, but there are very few pictures organized by server cabinets, servers, and weak current wells. Later, I used visio to draw a standard weak current well cabinet and server cabinet. Security monitoring, let's post it another day. In order to facilitate everyone, I will directly format the visio, which is convenient for everyone to modify and use. Technology is not hidden.)
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