打号标签可根据树木的直径来定制不同的长度

其中测算树木周长的公式：树的直径*3.14等于树周长+锁头10公分等于所需树锁总长度

树木直径10公分的树可以用塑料40长的号树标签

树木直径12公分的树可以用塑料50长的号树标签

树木直径15公分的树可以用塑料60长的号树标签

树木直径19公分的树可以用塑料70长的号树标签

塑料的长度都是固定的这四款：塑料40长，塑料50长，塑料60长，塑料70长，想锁再粗的树木只能选用钢丝的标签锁，钢丝的长度可以任意定做加长不同的长度

塑料和钢丝的共同点：

都可以打上苗木公司，苗木的二维码，苗木的号码段，苗木的品种等等，可定做不同的字体

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