Manufacturer
Elprug
Source: product table (PDF, 3 pages). For railway transport, electric and diesel locomotives and metro the table lists grades ЭГ2А, ЭГ141, ЭГ61А, ЭГ75, ЭГ841; МГС21Н is for locomotive earthing devices. The table also lists carbon electrodes.
Product lines 3
Designations — click the one you need
Designations — click the one you need