GOST R 54702-2011

Yttrium, lanthanum, ytterbium, lutetium and their oxides. Chemical-spectral method of determination of impurities of vanadium, tungsten, iron, cobalt, manganese, copper, molybdenum, nickel, niobium, lead, tantalum, titanium and chromium

System engineering. Protection of information in quality assurance process for system

The equipment of smoke control systems. The test method for the fire resistance

Hexagon socket set screws with flat point

Coloured undressed persian lamb of pure breed. Specifications

Unified system for design documentation. Graphic identifications in schemes. Inductive coils, chokes, transformers, autotransformers and magnetic amplifiers