Medny list, Dnipropetrovsk region.

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High electrical and thermal conductivity, excellent resistance to atmospheric corrosion, as well as the ability to withstand the effects of direct sunlight (ultraviolet radiation spectrum) and temperature changes in a wide range are the most important properties of copper.
Various types of rolled copper, incl. copper sheet, very popular due to the excellent operational properties of the metal. The copper sheet is very easily amenable to almost all types of processing, resistant to the effects of chemically active elements and the environment, and has a long service life.
Copper lends itself well to drawing and bending, which is the reason for the production of copper sheets of completely different sizes. Copper sheet comes in the following grades: M1r, M1, M2r, M2, M3r, M3, M1f, chemical. the composition of the material corresponds to GOST 859.
Today, a large number of modifications of copper sheets are produced, which are divided by technical parameters.
According to the method of production, copper sheet is divided into hot-rolled (G) and cold-rolled (D).(//tractor-service.com)
According to the material, it is hard (T), semi-hard (P) and soft (M).
Copper sheets obtained by the cold-rolled method are divided in length and width. Copper sheets also differ: in multiples of measured length (KD) and non-measured length (ND).
Cold-rolled copper sheet can be manufactured and delivered in rolls at the customer's request.
If necessary, hot-rolled copper castings are produced in greater lengths (up to 10 m), the production parameters, at the same time, are negotiated separately, on an individual order.

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