La taille ci-dessous 159 est généralement de 0,45 mm, et le coude peut également être pressé. S'il est grand, il est généralement de 0,5 mm. Bien sûr, il y en a aussi en 0.7mm, ou le coude est trop mou. Alors, tout le monde devrait comprendre. Bien sûr, les initiés surveillent les portes, et les profanes regardent l'excitation. Avant de faire ça, je me suis posé ces questions. I don’t even know what the thickness is 0.45mm. It was only after years of accumulated experience that I learned about these things.

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