| Message: | For this mold, hard alloy is used for the mold cavity, and low-speed WEDM for internal processing of the cavity to sub-mirror effect, and then abrasive flowing machine for polishing to the mirror effect; both upper and low punches are made with HITACHI high-speed steel with HRC up to 61-63 degrees and protected with wear-resistant coating to add 100% service life. url:http://www.yxhgmould.com |
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