国产精品揄拍一区二区久久国内亚洲精 I 日韩啪啪网 I 操你综合 I 亚欧成人网 I 亚洲成a∧人片在线观看无码 I 日本黄色一级网站 I 国产有码aaaae毛片视频 I 色妇综合 I 国产精品 经典三级 亚洲 I 夜夜狠狠 I 不卡影院av I 在线观看国产成人av天堂 I 最新精品视频2020在线视频 I 中文在线字幕免费观看av I 日日骚一区二区三区 I 亚洲欧美精选 I 精品视频在线观看视频 I 超碰97av在线 I 国产欧美在线播放 I 66com色麻豆 I 91精品91久久久中77777老牛 I 国产在沙发上午睡被强 I 国产亚洲黑人性受xxxx精品 I 亚洲丁香色 I 青青草福利视频 I av免费国产 I 日韩在线 | 中文 I 色婷婷精品大在线视频 I 日本97av I 午夜一级大片 I 久久久久麻豆v国产精华液好用吗 I 韩国中文字幕av I 久久久久麻豆

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

主站蜘蛛池模板: 国产精品自产拍高潮在线观看 | 欧美肥妇多毛bbw | 亚洲一区二区三区高清av | 日韩精品无码久久久久久 | 射死你天天日 | 久久激情五月丁香伊人 | 日本真人边吃奶边做爽动态图 | 亚洲精品成人av在线 | 风韵少妇性饥渴推油按摩视频 | 国产无套精品一区二区三区 | 九色综合狠狠综合久久 | 成人精品一区二区三区电影 | 国模无码人体一区二区 | 麻豆av字幕无码中文 | 大伊香蕉精品视频在线直播 | 欧美激情性做爰免费视频 | 久久久噜噜噜久久中文字幕色伊伊 | 国产日产欧产精品精品蜜芽 | 88国产精品视频一区二区三区 | 人妻有码中文字幕 | 性饥渴艳妇性色生活片在线播放 | 亚洲中文无码人a∨在线 | 无码性午夜视频在线观看 | 狠狠亚洲狠狠欧洲2019 | 色噜噜狠狠色综合日日 | _97夜夜澡人人爽人人喊_欧美 | 免费看搡女人无遮挡的视频 | 国产精品人妻久久久久 | 国产精品高清一区二区三区不卡 | 亚洲国产精品久久一线app | 国产精品宾馆在线精品酒店 | 日本视频高清一道一区 | 国产精品多人p群无码 | 欧美xxxx做受欧美 | 亚洲欧洲免费无码 | 5d肉蒲团之性战奶水欧美 | 亚洲国产一区二区三区四区电影网 | 国产伦精品一区二区三区免.费 | 久久97久久97精品免视看 | 国产人碰人摸人爱免费视频 | 无码av免费一区二区三区 |