used in refrigerator, freezer ,condenser, evaporator and compressor etc,cost ... .Materials: bao steel ,low carbon steel strip2.Main use: widely used in wire-tube condenser, evaporators,refrigerator , refrigeration, chiller, heaters, ... 24187-20096.certification:also passed ISO9001 quality attestation system and ISO14001 Certificate of Enviroment Management System7.surface treatment: no coating ,and ...