国刚笛膜，源自五河，因质地细致、透明度高、韧性佳、弹性好从而使笛子发音明亮清脆、振动良好等特点，而广受竹笛使用者的青睐。
GGDM, come from Wuhe,With its high quality,good toughness and elasticity,the film make sounds ringing and be silvery, so that it is warmly welcomed by the enthusiasts.
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