Polyvinylchloride insulated cables of rated voltages up to and including 450/750V. Part 7. Flexible cables screened and unscreened with two or more conductors
State system for ensuring the uniformity of measurements. Expert metrologist for metrological examination of technical documentation. General requirements
Occupational safety standards system. Special clothing for protection against gases and liquid chemicals. Method for determining the protective properties of the material under the action of chlorine and ammonia
