被夺一切后她封神回归,欧美videos另类色hd人妖,沦为公交两奶头春药高潮迭起,纸牌屋第一季在线观看,久久免费99精品国产自在现线,成人午夜视频,致命偏爱1V2,japan丰满人妻videoshd,欧美变态另类xxxx,捆绑白丝jk震动捧喷白浆,音乐大师课第三季,美女裸身裸乳无遮挡网站,XXX2高清在线观看免费视频,岳的手伸进我的内裤

<rt id="wgxk4"></rt>

<li id="wgxk4"></li>

+86 0576-88783189
hgz@cnadamas.com

S1

China's single crystal diamond tool market size reaches 670 million yuan in 2019

Saturday. 1 \ February

Single crystal diamond cutting tools are not easy to stick to the knife and produce chippings during cutting. The surface quality is good, and it is an ultra-precision machining tool. The special properties of single crystal diamond tools make it irreplaceable in ultra-precision cutting processing. Among them, the single crystal diamond tip tools have been widely used in F-theta lenses, V-groove structures of optical fiber connectors, lenses, gratings and other optical Superfinishing of freeform surfaces and functional surfaces with complex microstructures.

view more

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

<rt id="ercfk"></rt>

<li id="ercfk"></li>