<tt id="6hsgl"><pre id="6hsgl"><pre id="6hsgl"></pre></pre></tt>
          <nav id="6hsgl"><th id="6hsgl"></th></nav>
          国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区

          China sets national standards for "high pure gold"

          Updated: 2011-09-16 17:07

          (Xinhua)

            Comments() Print Mail Large Medium  Small 分享按鈕 0

          SHANGHAI - Authorities have released the first national standards on "high pure gold," a move that is likely to boost the country's gold consumption.

          "High pure gold," as it is called in the standards, refers to the gold with purity of 99.999 percent, or "five nines," and is also the highest purity so far, a spokesman with the National Gold Standardization Technical Committee said Friday.

          Generally speaking, a gold ornament with an amount of metal reaching 99 percent is called "pure gold," and more than 99 percent is called "thousand pure gold."

          Currently in the Chinese market, the highest purity level of a gold ornament usually reaches 99.99 percent, or "four nines."

          With the purity of 99.999 percent, the "high pure gold" used to be used in high-tech industry, such as aerospace. It requires a higher quality of the raw material and a more complicated technological craft.

          "With the adoption of new national standards, the technology of manufacturing high pure gold will be gradually introduced into the consumers' market, which is expected to promote the development of the country's gold industry and bring new changes to the market of gold investment and consumption," said Sun Zhaoxue, president of the China Gold Association.

          The new standards, approved by the the General Administration of Quality Supervision, Inspection and Quarantine and the Standardization Administration of China, went into effect this month, Sun said.

          主站蜘蛛池模板: 护士张开腿被奷日出白浆| 久久精品国产亚洲av成人| 毛片一区二区在线看| 亚洲综合av永久无码精品一区二区 | 777奇米四色成人影视色区| 日韩中文字幕有码av| 激情综合色区网激情五月| 在线日韩一区二区| 精品91在线| 18禁网站免费无遮挡无码中文 | 亚洲男人的天堂一区二区| 国产精品黄色片在线观看| 国产精品无码无需播放器| 青青草一级视频在线观看| 国产成人精品亚洲资源| 欧美成人精品 一区二区三区 | 免费人妻精品一区二| 国产成人一区二区三区免费| 就去色综合| 日韩av天堂综合网久久| 狠狠综合久久av一区二| 亚洲天堂成人网在线观看| 日韩av一区二区三区精品| 少妇久久久被弄到高潮| 丰满的女邻居2| 国产精品亚洲二区在线播放| 在线观看AV永久免费| 尤物无码一区| 性虎精品无码AV导航| 成人国内精品视频在线观看| 亚洲精品在线二区三区| 爱情岛亚洲论坛成人网站| 国产中文字幕精品免费| 午夜国产一区二区三区精品不卡| 中文字幕国产精品一二区| 日产国产一区二区不卡| 激情国产一区二区三区四区 | 国色精品卡一卡2卡3卡4卡在线| 无人区码一码二码三码区| 国产97人人超碰CAO蜜芽PROM| 中文字幕 制服 亚洲 另类|