... Solar water heater: CE certified, high efficiency, TIG welding, easy installation, reliable quality, good finish. Super stainless steel CE certified, high efficiency, ... 18pcs, 20pcs, 24pcs, 30pcs, 60pcs, 120pcs;Inner tank: Food class SUS 304 2B stainless steel sheet with thickness ... Fluorine carbon steel plate;Outer tank Dia.: 420mm, 470mm 600mm;Insulation material: High pressure PU foaming with ...