Quelle est la durée de vie d'une plaque de granit de précision de classe 000 ?
Service Life of Granite (Industry Common Name: Grade 000) Platforms Premise: 000 is not a national standard grade, but an indicator from the old national standard GB4987-85; the base material prioritizes Jinan Qinghui Longyan granite.Distinguish between two concepts: Effective service life maintaining Grade 000 accuracy; Physical service life of the stone itself. 1. Time to…