GOST R 56407-2015

Novikov cylindrical gears with hardness of teeth surface not less 35 HRCe. Basic rack

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Medical devices. Biological evaluation of medical devices. Part 12. Sample preparation and control materials

Outdoor lighting of railway objects. Requirements and methods of control

Materials used as cigarette papers, filter plug wrap and filter joining paper, including materials having a discrete or oriented permeable zone and materials with bands of differing permeability. Determination of air permeability