1. PAST STATE  The high intensity of the solar radiation through the roof increases the warming-up in the hall over 30 °C = 86 °F  The high internal temperature (34 °C = 93 °F ) creates technical problems in the production: measuring units, hydraulic units, laser units  On 18 July 2007 the inside temperature was continuously higher than 30°C = 86 °F from 9.00 am till 9.45 pm, but from 12.15 pm till 7.15 pm over 35 °C = 95 °F ! It was the same on 16, 17, 18, 19 July)  Legally required (Ministry of Health 3/2002): if the temperature in the building is higher than 29 °C = 84 °F, the operator must have min. 5 minutes relaxing time / hour

2. PAST STATE Roof (ceiling) temperatures Internal temperatures Temperature 11 Aug 11 Aug 12 Aug 12 Aug 13 Aug 13 Aug 14 Aug 15 Aug 15 Aug 16 Aug 16 Aug 17 Aug 17 Aug 00:00 13:55 03:50 17:45 07:40 21:35 11:30 01:25 15:20 05:15 19:10 09:05 23:00 122 °F

3. PAST STATE Temperature o C 11 Aug 11 Aug 11 Aug 12 Aug 12 Aug 13 Aug 13 Aug 14 Aug 14 Aug 15 Aug 15 Aug 16 Aug 16 Aug 17 Aug 17 Aug 17 Aug 00:15 11:25 22:35 09:45 20:55 08:05 19:15 06:25 17:35 04:45 15:55 03:05 14:15 01:25 12:35 23:45 122 °F 93 °F Roof (ceiling) temperatures Inside temperatures Outside temperatures

4. RESULTS  Installed evaporative roof cooling system  The highest roof temperature value is 32 o C = 90 °F  The max. shop floor temperature is 29 o C = 84 °F  Avoiding the introduction of 5-minute relaxing time  No production lost, caused by high internal temperature

5. RESULTS Temperature o C 11 Aug 11 Aug 11 Aug 12 Aug 12 Aug 13 Aug 13 Aug 14 Aug 14 Aug 15 Aug 15 Aug 16 Aug 16 Aug 17 Aug 17 Aug 17 Aug 00:15 11:25 22:35 09:45 20:55 08:05 19:15 06:25 17:35 04:45 15:55 03:05 14:15 01:25 12:35 23:45 90 °F 84 °F Inside temperatures Roof (ceiling) temperatures Outside temperatures