高大丰满熟妇丰满的大白屁股,国产边打电话边被躁视频,99热精品久久只有精品,日韩欧无码一二三区免费不卡

Technology Tendency

Technology Tendency

Home > ABOUT US > Media Events > Technology Tendency

China ENFI Officially Launches SEMI International Standard
DATE:06 Dec 2015 瀏覽次數:1
+ . -

Recently, the “Test Method for Determining B, P, Fe, Al, Ca Contents in Silicon Powder for PV Applications by Inductively Coupled Plasma Optical Emission Spectrometry” (Standard No.: SEMI PV64-0715), whose compilation is led by China ENFI, has been officially launched. It obtains standard publication certificate from SEMI. This is another breakthrough for Chinese PV companies to promote international standards in PV field.

The rapid development of PV industry also puts forward higher requirements on polysilicon quality, especially on the impurity content control. Silica fume is the key raw material for polysilicon manufacture, and the impurity contents of B, P, Fe, Al and Ca in silica fume have a great influence on trichlorosilane purity. Therefore, the impurity content in silica fume is highly valued by the industry. China ENFI organized experts for basic research and innovation, determined the impurities of B, P, Fe, Al and Ca in the silica fume, and ultimately formed the measurement standards of B, P, Fe, Al and Ca in industrial silica fume for PV polysilicon.

In August 2012, China ENFI proposed SEMI standard application. In order to enhance the quality  of the standard, China ENFI collaborated with SINOSICO, CPVT, LDK, Suntech Power, TBEA, GCL and a number of other agencies to set up a standard compilation group. The group researched and analyzed the methods of measurement, utilized the National Engineering Laboratory of Polysilicon Materials Preparation Technology and other agencies to conduct verification tests and accumulated enough data. Additionally, the standard compilation group also exchanged views in-depth with senior experts from America SunEdison, Belgium Solvay and Taiwan Youchao Energy Company on the technical issues related to standard. After seven reviews of the committee, 5 rounds of global voting and constantly revising and improving, the standard draft finally won global experts’ consensus, went through  all the review procedures in the United States on May 19, 2015 and was released globally in July 2015.

SEMI (Semiconductor Equipment and Materials International) founded in 1970 is a global professional association of high-tech fields. Over more than 40 years, SEMI has been devoting itself to the formulation of international standards. Now it owns more than 2000 member companies. The members are engaged in the development, production and technical support of semiconductor, flat panel display, solar PV, nano technology and micro electro mechanical systems. 1000 companies and more than 5000 volunteers from America, Europe, Japan, South Korea, mainland China and Taiwan District of China join in SEMI international industry technical standards activities; they represent the voice and needs of industries around the world. At present, SEMI has founded 23 Standards Committees and more than 200 working groups around the world, formulated up to 900  safety standards and related standards in 20 categories, which have been widely applied by IDM companies, wafer manufacturers, packaging and testing plants in the world. SEMI contributes to the promotion of global industry standards formulation.

China ENFI has also been involved in the preparation of another two SEMI standards, including the “Test Method for Determination of Total Carbon Content in Silicon Powder by Infrared Absorption after Combustion in an Induction Furnace” (Standard No.: SEMI PV59-0115), which has been successfully launched on January 15, 2015; the other SEMI standard "Test Method for the Chlorine in Silicon by Ion Chromatography" has entered the final review phase, and is expected to be approved in the first half of 2016.

主站蜘蛛池模板: 国产碰在79香蕉人人澡人人看喊| 一本色道久久综合狠狠躁| 国产精品美脚玉足脚交欧美| 国产suv精品一区二区五| 国产成人欧美视频在线观看| 一本精品99久久精品77| 亚洲中文字幕无码爆乳| 麻豆天美国产一区在线播放| 99精品国产高清一区二区| 日韩无码专区| 亚洲国产成人精品久久久 | 亚洲综合精品一区二区三区| 后入内射无码人妻一区| 国产日韩av免费无码一区二区| 与子敌伦刺激对白播放| 亚洲一区二区三区高清在线看| 日日碰狠狠添天天爽不卡| 久久久久成人网站| 国产乱理伦片在线观看| 2021年国产精品每日更新| 国产农村妇女aaaaa视频| 波多野结衣免费一区视频| 精品人妻无码一区二区三区9| 无码精品a∨在线观看十八禁软件| 色偷拍 自怕 亚洲 10p| 久久www免费人成_看片中文| 色妞色综合久久夜夜| 亚洲欧美色国产综合| 粗大挺进尤物人妻中文字幕| 国产精品香港三级国产av| 92国产精品午夜福利| 丰满少妇人妻无码| 免费做受???高潮| 亚洲国产精品成人网址天堂| 使劲快高潮了国语对白在线| 丰满少妇女裸体bbw| 亚洲中文字幕乱码av波多ji| 99这里只有是精品2| 亚洲夜色噜噜av在线观看| 色欲av伊人久久大香线蕉影院| 人妻少妇|