免费+无码+高潮_免费无码高清一区_欧美大片国产精品美女裸体视频_精品av一区9久_精品av一区10久_成人性爱无码在线视频_日韩三区四区精品视频在线观看_伊人高清国产在线

<center id="r2aqe"><label id="r2aqe"></label></center>

<mark id="r2aqe"><label id="r2aqe"></label></mark>

<bdo id="r2aqe"><small id="r2aqe"></small></bdo>

<rt id="ccyfc"><small id="ccyfc"><style id="ccyfc"></style></small></rt>

<rt id="ccyfc"><small id="ccyfc"></small></rt>

簡體中文 English: Home About Us Products Core Technology News Thesis Join Us Contact Us

News

Company News Hot news

Our company was designated to formulate the industry standard of Solid Ca/Zn Complex Heat Stabilizer

Date Time：2012-09-11 23:35:20　Views：Back

Our company was designated to formulate the industry standard of Solid Ca/Zn Complex Heat Stabilizer for PVC of Guangdong Province.

PreviousCZX-238 project passed the appraisal of scientific and technological achievements

Next“The development of CZX-118 Mg/Al/Zn (Ca/Zn) non-toxic complex stabilizer” obtained the first prize