活性炭是由椰子壳制成的圆柱状颗粒，吸附能力强，可配合金属框做成过滤器，通用性好，结构坚固可拆卸，方便更换滤材与达到外框重复利用的目的，经济性能高。
The activated carbon which is made from the cocoanut shell, is column granule. It can be made into the filter, matching with the metal frame.
具有强度高、重量轻、防风能力 强的效果，组合式安装，可拆卸，安装简单、携带方便。
The utility model has the advantages of high strength, light weight, good windproof ability, composite type mounting, dismantlement availability, easy assembly, and convenient carrying.
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