Addresss: Rm. B410, 4th Floor, Office Building, NO. 205, Tongbao Rd., 322000, Yiwu, Zhejiang
There are various quality classifications in flat back hot fix rhinestones, no matter what is called, Korean quality, top Chinese quality, China DMC, China AAAAA. Is there any easier, stable and specific way of grading? Let me show you how our premium rhinestones are classified.
Artifical intelligence and vitual techs auto classification machine are used in our grading process, the rhinestones will be vitually recgnized as below images before auto selecting started.
First class hotfix rhinestones are almost perfectly round in shape, no bubbles in the crystal like below.
Second class hot fix rhinestones allows unobvious small quantity of bubbles, slightly crisp on the edges or slightly oval in shape.
Small quantity of bubbles
Slightly oval in shape
The following are the defective flat back hot fix rhinestones that have to be taken off in our auto inspection processes.
No hotfix glue
Bubbles that are visable by eyes