Precision grade of grooved marble platform
Complete Explanation of Precision Grades for Grooved Granite Platforms (Jinan Blue Granite, GB/T20428) I. Core Conclusion FirstGrooving ≠ direct downgrade, but grooving processing introduces precision risks; the final precision grade is determined by the data from re-grinding and re-testing after all grooving and tapping are completed.Products on the market are divided into two main categories…