1. Thickness: Quality allowed +-0.5mm. In production, we will measure the thickness three times to make sure it is qualified.
2. Size: We will make the slab 20mm longer and wider to make up the lack of corner problem that possiblely happen.
3. Production line QC will inspect the slab surface meter by meter to make sure the there are no bubble and other quality problem.
4. General QC will inspect the quality again, to make sure the whole quality is good.
5. We supply two years's quality warranty, if you found any quality problem within two years after you received the slabs, you can contact with our saler.