Refractive index (RI) : 1.544-1.553, hardly beyond this range.(the refractive index is the ratio of the incident Angle sine to the refraction Angle sine when the light penetrates through the gem crystal through air and causes the refraction phenomenon.)
1.We have engaged in this area for more than 14 years;
2.It sells well both at home and abroad and enjoys a good fame;
3.Our plant works with everything from the raw material to the finished product;
4.We produce customized models accessories to suit the need of the global market;
5.The production cycle is greatly shortened owing to powerful productivity.