亚洲色图50P,欧美婷婷六月丁香综合色,波多野结衣电影一区,99er久久

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

操老女人操老熟妇| 桃色tv麻豆| 久久2017| 妺妺窝人体色www聚色窝仙踪| 国产嫩草爆乳视频在线播放| 国产成人a亚洲精v品无码| 18禁自慰夜嗨嗨| 久久精品无码一区二区日韩A软件| 久久久久国产精品www| 国产美女操逼| 免费 黄色 视频 在线| 中国熟妇在线观看| 免费AV永久看| 午夜欧美精品久久久| 久久亚洲粉嫩高潮的18P| 国产熟女内射oooo| 又爽又黄又无遮挡的激情视频| 无码专区—va亚洲v天堂麻豆| 最新av资源肉感| 国产69精品久久久久久野外| wwwjiu| 美女黄18以下禁止观看| xxxxx性bbbbb欧美| 久久久久亚洲av无码专区桃色| 福利片经典片写真片在线观看| 高清无码 国产一区| 久久久久久韩国| 久久综合久久鬼色| 亚洲精品乱码久久久久久中文字幕| 久久综合AV| 毛片在线播放a| 亚洲av无码一区二区三区波多野结衣 | 无码人妻精一区二区三区老牛 | 精品久久久久久国产牛牛| 性ⅩXXXX国产| 少妇爽到呻吟的视频| 桃色午夜网站| 亞洲國產綜合久久久| www俺来也com| 亚洲美女高潮久久久久| 97影院午夜理论片在线|