Is camouflage stackable?

DiMtopia, on 16 December 2013 - 04:40 PM, said: i usually buy 30 day camo with credits for all my tanks and since i saw there will be a 50% discount i was wondering if it's worth buying more. for example if i buy 30 day camo for a tank and tehn go and buy the same camo again for the same tank and for 30 days too, will it stack with the previous one and last 60 days? if it does i'd be tempted to get for 6-12 months for my permanent tanks. it wouldn't be a huge save but i'd get one thing out of my mind for a long time.