国产免费网站无码观看,bobo浏览器最新版本,911精品国自产在线偷拍,中文字幕人妻丝袜一二区三区,国产精品一区二区毛片A片婊下载
中文
EN

National service hotline:   13956259526      13905620906

Business philosophy

Quality is the lifeline

News

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

News

Good news: the company has obtained six national utility model patents
Release time:2020-11-28 09:15:36 | Browse times:

Recently, the company has six utility model patents authorized by the State Intellectual Property Office.

Patent name: "A new type of surface grinder"

Patent number: ZL 2019 2 1734534.1

Patent name: "A grinder to improve the machining accuracy of shaft parts"

Patent number: ZL 2019 2 0887368.2

Patent name: "a lathe with fast automatic clamping and feeding"

Patent number: ZL 2019 2 0887369.7

Patent name: "Wire EDM for easy recovery of spark oil for integrated circuit molds"

Patent number: ZL 2019 2 0887366.3

Patent name: "Slow wire machine for stable operation of integrated circuit molds"

Patent number: ZL 2019 2 0886809.7

Patent name: "A high-efficiency and stable working EDM machine"

Patent number: ZL 2019 2 0886810.X

001.png

002.png

003.png

004.png

005.png

006.png

 
 Last chapter:Tongling Municipal Party Secretary Ding Chun and other leaders came to our company to investigate and guide the work
 Next chapter:Tongling Yuanyi Precision Machinery Co., Ltd. First Trade Union Member Congress
HOME/ ABOUT YUANYI/ News/ PRODUCT/ Join us/ Contact us/ Message/ Answers/

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

Copyright of Tongling Yuanyi Precision Machinery Co., Ltd. Technical support:Creation Network

国产精品人妻无码久久久郑州天气网 | 91在线无码精品在线观看 | 亚洲日韩一级精品片在线观看 | 久久久又黄又爽免费观看下载 | 无码人妻国产一区二区 | 日韩精品毛片无码一区二区三区 | 中文人妻丰满熟妇伦子伦精品 | 黄色A片手机板在线播放 | 亚欧精品视频在线观看 | 亚洲精品无码喷奶水A片小说 | 波多野结衣在线播放 | 成年人视频免费在线观看 | 黄色一级视频在线观看 | 3D动漫精品一区二区三区 | X9X9X9搡BBBB搡BBB| 国产白丝护士喷白浆视频 | 成人3D动漫一区二区三区91 | AV一区二区三区四区 | 国产精品电影久久久久久 | 国产精品美女www爽爽爽 | 99精品毛片无码一区三区 | A片视频免费在线播放 | 久久久久久性爱久性爱久性爱久性爱AV | 熟女 人妻 人妻の偷拍 | 91夜色视频在线观看 | 国产一级婬片无码免费麻豆网刘涛 | 国产午夜电影在线观看 | 久久久成人一区二区 | 无码免费婬AV片在线观看沙滩 | 嫩模写真一区二区三区三州 | 黑人XXX少妇XXX性夾 | 天天穞夜夜穞狠狠稆不够 | 国产一级A片一夜情毛片 | 久久精品国产亚洲AV果冻不片 | 亚洲IV秘 一区二区三区 | 真人強姦外女毛片破處在线看 | 精品3d里番一二三区视频 | 亚洲AV永久无码精品国产精 | 少妇的肉体呻吟AV久久久 | 成人在线免费观看视频 | 红桃成人在线观看视频 |