i have browered many fencing website of co.uk  or the aus, they are professinal in operating the construction of fencing, and goods design of fence, have the PDF or DWG format files to prove they are engineers, but in china people eyes, it is much trouble, just to hold some fence is ok! China do not need the animals to destroyed the fence, just a warning to other people, this is my place! do not come in!  forbiden visiting!