public static PcParts Questions3(PcParts thing){
		for(int i=0; i < shopStock.size(); i++){
			if ( thing.getManufacturer().equals(shopStock.get(i).getManufacturer()) && thing.getmodelName().equals(shopStock.get(i).getmodelName()) && thing.getmodelYear() == shopStock.get(i).getmodelYear()){
				item = shopStock.get(i).getThing();
				shopStock.get(i).setAvailableStock(shopStock.get(i).getAvailableStock() - 1); // <------meiwsh tou stock
			}
		}
		return item;
	}