A: Good quartz tubing smell very natural, because good quartz tubing are produced by environmental protection materials. In the production process of poor quartzite, formaldehyde containing glue is added, and it will have a strong smell of formaldehyde. Such this quartz tubing can not be optional even if quoted at a low price, which is harmful to health.
B: A quartz tubing with no pores on the surface.
C: The stitching is not obvious.
D: With the key or knife, there is no marked scratch.
E: Not drop the stone powder with the sand paper under 200 eyes.
F: There was no obvious crack in the open surface.
A large number of quartz tubing are supplied in a variety of specifications from MICQ. Please contact sales@micquartz.com
