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


常熟市| 鄂托克前旗| 通河县| 哈尔滨市| 湘阴县| 汶上县| 宣武区| 宁海县| 蚌埠市| 沧州市| 盐津县| 碌曲县| 德清县| 北碚区| 株洲县| 邵武市| 井冈山市| 平乡县| 子洲县| 安徽省| 邵东县| 花莲县| 樟树市| 葵青区| 方城县| 陇川县| 兴安盟| 汪清县| 洪湖市| 改则县| 吴堡县| 潞城市| 福泉市| 沙坪坝区| 孝义市| 山东省| 乡宁县| 普洱| 台湾省| 鄂伦春自治旗| 马鞍山市|