Russia Gas Generator Market Size, Share and COVID-19 Impact Analysis, By Power Rating (Up to 100 kVA, 100-350 kVA, 350-750 kVA, 750-1000 kVA, 1000-2000 kVA, 2000-3000 kVA, and Above 3000 kVA), By End-user (Mining, Data Centers, Construction, Manufacturing, Tourism/Hospitality, Oil & Gas, Residential,农业/温室，水处理/垃圾填埋场，电力公用事业，冷藏仓库等）和预测，2021-2028