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: 国产成 人 综合 亚洲专区| 国内女人喷潮完整视频| 久久婷婷五月综合97色一本一本| 亚洲r成人av久久人人爽澳门赌| 久久99国产精品久久99| 女邻居丰满的奶水| 亚洲gv猛男gv无码男同短文 | 中文字幕人妻被公上司喝醉506 | 天堂tv亚洲tv无码tv| 人妻精品国产一区二区 | 少妇高潮a视频| 亚洲精品suv精品一区二区| 国产一区二区三区无码免费| 99国产欧美另类久久片| 国产极品女主播国产区| 欧洲极品无码一区二区三区| 亚洲精品99久久久久中文字幕| 久久露脸国产精品| 亚洲国产成人精品女人久久久| 国产a∨国片精品青草视频| 亚洲日韩成人性av网站| 久久婷婷六月综合色液啪| 四虎永久在线精品免费下载| 国精产品一区一区三区| 97人妻天天摸天天爽天天| 国产精品无码久久久久| 国产第一页屁屁影院| 欧美乱妇高清无乱码免费| 99精品丰满人妻无码一区二区| 国产成人精品2021| 男女啪啪做爰高潮无遮挡| 国产精品久久久久久成人影院| 亚洲国产成人精品综合av| 波多野结衣乳巨码无在线观看| 中文国产乱码在线人妻一区二区| 精品国产a∨无码一区二区三区| 人妻无码不卡中文字幕在线视频| 免费看一区二区三区四区| 日韩国产一区二区三区四区五区 | 色哟哟最新在线观看入口| 国内精品国内精品自线在拍|