A folded box with bottom and top flap concur in the middle according to FEFCO 0201 is to be used.
按照FEFCO 0201，使用底端和顶端都具有对开盖板的折叠纸箱。
Some hide the "Made in China" label in the bottom of an inside pocket or stamped black on black on the back side of a tiny logo flap.
有一些是将“中国制造”标签藏在袋子里面的底部，或者在一个很薄的商标牌黑色的背面打上黑色的印记。
Meanwhile, the flap valve can be used to adjust weight, spring tension and the bottom outlet valve flap valve opening size to determine the pressure and open and close time.
同时，可以利用调整阀瓣的自重、弹簧的弹力以及阀瓣的底孔大小来确定阀门的开启压力和启闭时间。
Meanwhile, the flap valve can be used to adjust weight, spring tension and the bottom outlet valve flap valve opening size to determine the pressure and open and close time.
同时，可以利用调整阀瓣的自重、弹簧的弹力以及阀瓣的底孔大小来确定阀门的开启压力和启闭时间。
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