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???????13396220692??17862525099??17862512888??18963580692
?????2418524989@qq.com
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??????????????и??????????????66??
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????????????????????í??????????A3q?????????????????16q????????????????12Mnq??12MnVq??15MnVNq??16Mnq??????????????4.5~50?????
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5??1800??8000+ 32??
5??1800??8000+ 32??
8??1800??8000+ 90??
8??2000??8000+ 70??
10??1800??8000+ 70??
10??2000??8000+ 90??
???????????????лл ?? ????? ????:???????????????
?????????48mm?????????????????????????
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??????? /CONTACT
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COPYRIGHT ?????????????????? ????????ICP??2021038300?? ???????????????