91传媒久久久蜜桃-亚洲精品日韩精品-欧美日韩亚洲三区-亚洲欧美日本免费-亚洲女人自慰精品久久久自慰-亚洲产国偷V产偷√自拍网址,国产精品成人99久久久久_国产午夜无码片免费_四虎精品影库4HUTV四虎_国产激情久久久久影院 ,性少妇VIDEOSEXFREEXXXX片/小少妇BBBBBBBBBBBB/四川少妇BBW搡BBBB槡BBBB/四川少妇搡BBW搡BBBB/嫩BBB槡BBBB槡BBBB/特级BBBBBBBBB成人片/另类老妇奶性生BBwBBw/女BBBB槡BBBB槡BBBB ,高清欧美性猛交XXXX黑人猛交,欧美乱妇日本无乱码特黄大片,中文亚洲äv片在线观看不卡,欧产日产国产水蜜桃,欧美与黑人午夜性猛交久久久,亚洲äV无码久久精品色欲

Special glass beads for two-component marking

The glass bead for two-component marking coating is a kind of high-performance coating reflective material developed on the basis of absorbing foreign advanced technology. It uses high-performance organic silicon material to produce glass beads by special

  • Product name：Special glass beads for two-component marking
  • Appearance：Colorless, transparent, without obvious bubbles and impurities
  • Water resistance：The consumption of 0.1N hydrochloric acid is 10ml, and the surface of glass bead is not dark
  • Roundness：Rounding rate ≥ 85%
  • Refractive index：Nd ≥ 1.50
  • Density：2.4-2.6g/?cm3
  • Main components：The content of SiO2 is more than 68%


The glass bead for two-component marking coating is a kind of high-performance coating reflective material developed on the basis of absorbing foreign advanced technology. It uses high-performance organic silicon material to produce glass beads by special process. After coating, the glass beads have better performance.

Special glass beads for two-component marking


Technical parameters:


Appearance: no color transparent sphere, smooth and round, no obvious bubbles or impurities; roundness index: roundness index ≥ 85%; density: 2.4-2.6g/cm3; refractive index: Nd ≥ 1.50;


Glass composition: calcium sodium glass composition, SiO2 content > 68%;


Water resistance: the consumption of 0.1N hydrochloric acid is 10ml, and the surface of glass bead is not dark;


Coating performance: after soaking in water for 30 seconds and drying at room temperature for 2 hours, it can pass through the funnel smoothly.


Packing:


Double layer bags shall be used for packaging. The inner bag shall be polyethylene film with thickness not less than 0.5mm. The outer bag shall be plastic woven bag to prevent leakage and moisture. Net weight of each bag 25 ± 0.2kg


五寨县| 札达县| 郁南县| 门源| 大宁县| 深水埗区| 吉木萨尔县| 岢岚县| 信宜市| 泊头市| 江安县| 巨鹿县| 沁阳市| 惠水县| 渑池县| 定结县| 广汉市| 巴东县| 大冶市| 黔西| 昌江| 西充县| 九寨沟县| 通城县| 石渠县| 普安县| 石门县| 长乐市| 察雅县| 隆昌县| 政和县| 调兵山市| 金门县| 吐鲁番市| 张家界市| 永清县| 贺州市| 田东县| 林甸县| 淮阳县| 甘泉县|