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

精品无码人妻被多人侵犯av| 免费无码视频在线观看| AV在线网站无码不卡的| 91精品国产高跟薄丝在线观看| 成熟闷骚女邻居引诱2| 最碰免费人人妻视频| 一区二区三区无码综合| 国产精品之互换高潮| 精品国产乱码久久久久久移动网络 | 外国肥胖毛片| 久久久久久久久888| 日韩无码高清四区| 婷婷五月天激情网| 东北老女高潮过瘾又话| 久久久久久无码av成人影院| 性猛69式交富婆ⅹ乱大交| 久久久综合九色合综国产精品| 亚洲人成人伊人成综合网无码| 拉菲美女性爱一区二区三区| 亚洲人成色4444在线观看| 精品国内视频| 雯雯在工地被灌满精在线视频播放 | 肉感饱满中年熟妇日本| 人妻人人人妻| 亚洲午夜久久久影院伊人| 正在播放酒店约少妇高潮| 俄罗斯毛片短视频| 人妻丰满熟妇AV无码区动漫| 欧美xxxx18性欧美| 性色AV片免费看| 国产激情在线免费观看| 精品999婷婷| 黑人大战欧美性| 亚洲成人手机在线| 99人人精品| 日韩国产成人一区二区| 亚洲AV成人教育片| 欧美老妇50.60aV| 午夜福利在线观看| 久久九九热视频免费| 淫荡人妻少妇|