| eta plus is produced using an air-to-air vacuum coating process. The so-called magnetron sputtering is the method used for applying the coating to the metal substrate.
Collector efficiency : 75.5%, a1=4.3, a2=0.012
Coating efficiency : absorption 95%, emission 5%
Standard coating thickness : 0.12mm
Coating origin: made in Germany; Yes
Ultrasonic welding, Yes
SOLARKEYMAR Certificated
Yes
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