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Head forming method evaluation either Cold or Hot forming method, ¾Ð·Â¿ë±â °æÆÇ FORMING METHOD¿¡ ´ëÇÑ Æò°¡¸¦ ¼öÇàÇÏ´Â À¥½ºÅ©¸³Æ®ÀÔ´Ï´Ù.
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