蜜桃精选av,久久亚洲AV无码精品色麻豆夜,在线观看人成视频免费不卡,а√中文在线资源库

SCIENTIFIC RESEARCH
Research Achievement

"Scientific research and innovation, layout of the future" is the foundation of Zhongshi in the first place in the industry and the expansion of territory. Since its establishment, Zhongshi has continuously attracted outstanding scientific research talents, created a research and development elite team led by doctoral supervisors and complete levels, and equipped with high-end research and development laboratories, so that Zhongshi products from research and development to demonstration testing, and then to batch listing to form a scientific and rigorous management system. At the same time, Zhongshi has achieved fruitful scientific research results, contributed a number of important patented products to the industry, and is a national standard drafting unit.

The invention relates to a silver-plated palladium alloy microsphere conductive adhesive and a preparation method thereof

Patent Number: CN200810180480.9

A high reliability low temperature lead-free solder paste and its preparation method

Patent Number: CN201610276455.5

A water-based cleaning agent can reduce the emission of pollutants in the cleaning of circuit boards

Patent Number: CN201410158283.2

A cleaning agent that can remove frosty residue from circuit boards

Patent Number: CN201410156472.6

A water-based soldering flux that can reduce the emission of pollutants during tin welding

Patent Number: CN201310238354.5

A solid flux with cored solder wire that reduces flight

Patent Number: CN201310239732.1

?

A halogen-free flux for lead-free solder paste and its preparation method

Patent Number: CN201210574561.3

A multicomponent eutectic lead-free solder of Sn-Zn-Bi and its preparation method

Patent Number: CN201210018765.9

A water cleaning flux for lead-free soldering and its preparation method

Patent Number: CN200910148739.6

A copper surface protectant for lead-free printed circuit board and its preparation method

Patent Number: CN200910131311.0

A water-based no-clean flux with no volatile organic compounds, no halogen and low solid content

Patent Number: CN200610078040.3

无码人妻精品一区二区三区99仓本| 国产精品99精品免费无码视频| 欧美性xxxx狂欢老少配| sm调教视频在线观看| 亚欧一二三av| 理论片87福利理论电影| 红杏亚洲影院一区二区三区| 国产精品久久无码一区二区三区网 | 熟女老妇97| 人人添人人澡久久婷亚洲AV| 在线国产你懂的| Av片激情综合网| 最新国产乱伦AV| SM调教区一区二| 久久99.com| 国产乱妇无码大片在线观看| 亚洲精品乱码久久久久久蜜桃不卡 | 先锋影音av资源网| 搡老女人老91妇女老熟女| 亚洲精品一区久久久久久| 日韩午夜成人影院| 亚洲无码AV在线免费播放| 强行无套内大学生初次| 日韩少妇天堂| 人人操人人乐人人色| 四虎国产精品免费观看视频优播| 高清无码久道中文字幕| 区二区欧美性插b在线视频网站 | 亚洲成在人线视av| 亚洲国产成人一区二区精品区| 亚洲av永久无码精品网址| 公侵犯人妻二区三区| 狠狠色噜噜狠狠狠狠97俺也去| 正在播放熟妇群老熟妇456| 欧美性爱网欧美性爱| 国产精品无码a v在线观看| www.久久成人电影.com| 国产淫荡视频| 性爱电影一卡二卡| 高清无码午夜福利视频| 精品无码人妻一区二区三区蜜乳|