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DIN 18220
Trenching, milling and ploughing procedures for laying empty pipe infrastructures and fibre optic cables for telecommunications networks
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DIN 50453-2
Testing of materials for semiconductor technology - Determination of etch rates of etching mixtures - Part 2: Silicon-dioxide coating, optical method
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DIN 54387-4
Testing of ceramic raw materials and ceramic materials - Chemical analysis of boron carbide, boron nitride, metal borides and elemental boron - Part 4: Determination of metallic main components and trace impurities
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