... heat aborption efficiency,stronger thermal insulation property ,besides,it is able to bear splat cooling and heat,has higher ... port, overflow, water inlet and outlet, electric heater is optionWelding:Argon arc weldingFastening pieces:stainless steel screw5.solar Frame6 ... Sunpower Logo or the package you want on the basis of OEM The five biggest manufacturer of compact solar stock tank heater with CE, ...