... a friend forever, like the common progress of our cause! ! Rock wool sandwich panel Color anti-static (Baosteel): 1, wall size ... .4mm, 0.426mm, 0.476mm, 0.50mm, 0.60mm 4, rock wool density: ≥ 120kg/m3 5, thermal conductivity coefficient: ≤ 0.046w ... technology to achieve a variety of mechanized production of composite core material purification board with adhesive solid, high level board, size ...