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See Chinese contents: GB/T 25993-2023 GB/T 25993-2023: Permeable paving bricks and permeable paving flags
This document specifies the product categories, grades, markings, general requirements, technical requirements, test methods, inspection rules, product certification, stacking and transportation of permeable paving bricks and permeable paving flags. This document applies to the design, production, testing and application of permeable pavement products for use in municipal sidewalks, landscape paths, non-heavy-loaded pavement plazas and other places.
