Solar thermal collector efficiency China supplier DR-59

ContactE-mail: eran@dingre.comMob(WhatsApp): 086 137544 55533 Materials of DR Solar Water Heater1.Vacuumtube: 1.1.Threetargetsolar vacuum tube,borosilicateglass 2.Watertank: 2.1.Innertank:SUS304-2Bfoodclass stainlesssteel, thickness0.5mm 2.

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