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

内射人妻无码色AV无码| 亚洲每日在线| 日产精品卡二卡三卡四卡区| 國产一二三内射在线看片| 成人禁免费裸体裸片| 一片毛久久久久久久| 亚洲综合管自拍| 亚洲尺码成人二区| 日韩卡一卡二卡乱码新区| 国产女高清在线看免费观看| 好吊妞人人超碰| 中文字幕久久精品一二三区 | 亚洲日韩久久无码色欲色欲| www.libeier.cn| 亚洲欧美日本韩国| 中文在线っと好きだった在线 | 亚洲三级免费网站| 日韩在线精品强乱中文字幕| 欧美黄色片视频| 国产一二三区在线| www..com欧美高清啪啪| 中国熟妇色XXXX欧美老妇多毛| 欧美真人性咪爱在线播放| 中文字幕精品一区二区三区电影 | 中文字幕乱码亚洲无线码| 丰满饥渴老熟妇videos| 久久免费精品国自产拍网站| www,九色| 小货sao边洗澡边cao你动漫| 欧美黑人久久久久久久| 拔插拔插海外华人免费视频| 亚洲www啪成人一区二区| 亚洲AⅤ熟女| 国产午夜无码片在线观看网站 | 婷婷丁香六月| 好吊妞干网日本| www.狼窝| 日本丰满老妇bbw| av国产剧情md精品麻豆| 邻居少妇张开腿让我爽了在线| 熟女高潮大叫69XX|