Tongling Yuanyi Precision Machinery Co., Ltd.
Address: 129 west Cuihu road 5, Tongling Economic Development Zone, Anhui Province
Tel:+86 13956259526
Tel:+86 13905620906
E-mail:sale@yyjgjx.com
Skype:elena.chen93
Study on the cavity of package mould by Tongling Yuanyi Precision Machinery Co., Ltd. |
Release time:2019-05-16 09:04:40 | Browse times: |
According to the characteristics of some packaged molds, through the study of EDM discharge technology, we have effectively solved the uniformity of the surface roughness of the QFN type cavity surface, the SOT/SOP type cavity surface release, and the spherical contour of the LED spherical cavity. Degree, mirror surface roughness.
|
Last chapter:The development of the mold industry puts new demands on equipment Next chapter:Company's 10th Anniversary Celebration: Huangshan Hongcun 2 day Tour |
Tongling Yuanyi Precision Machinery Co., Ltd.
Tel:+86 13956259526 Tel:+86 13905620906
E-mail:sale@yyjgjx.com
Address: 129 west Cuihu road 5, Tongling Economic Development Zone, Anhui Province
| 免费无码婬片AAAA片直播孕妇 | 国产BBB搡BBB爽爽爽电影 | 国产精品秘 麻豆果冻传媒下载 | 波多野结衣乳巨码无在线观看 | 四川少妇BBBBBB爽爽小说 | 久久久久一区二区三区 | 亚洲无码AV一区二区 | 久久夜色精品国产欧美乱极品 | 黄色视频在线观看入口 | 国产精品人妻人伦久久久网址 | 欧美亚韩一区二区三区 | 粗大的内捧猛烈进出在线视频 | 欧美黑人群交在线观看 | 一本久道在线视频 | 四川BBB又粗又硬又大 | 亂倫近親相姦中文字幕完整片 | 99久久无码国产精品性出奶水 | 国产精品无码一区二区AⅤ污美国 | 黑蝴蝶熟女AV导航 | 69人妻精品丰满熟女区 | 久久久无码国产精品无码三区三区 | 黑丝无码在线观看 | 亚洲 日韩 丝袜 熟女 变态 | 91色秘 乱码一区二区三区竹菊 | 亚洲の无码国产の无码喷水 | 99精品国产一区二区 | 国产精品成人AAAA网站女吊丝 | 妃光莉在线播放69Av | 黃色A片一级一级一级久别的草原 | 漂亮人妻洗澡被强公BD | 国产精品国产精品国产专区不粉h | A片内谢一区二区三区的视频 | 丰满爆乳肉感夕季千岁 | 无码人妻精品一区二区蜜桃色欲 | 蜜桃av鲁一鲁一鲁一鲁俄罗斯的 | 麻豆一级A片久久久乱码 | 人与禽一级婬片A片69式按摩 | 亚洲老熟女A片AV色欲电视剧 | 日本无吗免费视频 | 风流少妇A片一区二区蜜桃 久久国产V一级毛多内射 |