Soldering of copper, copper alloys, steel and zinc parts.
铜及铜合金、钢、锌制零件的钎焊Soldering of copper, copper alloys, steel and zinc parts.
铜及铜合金、钢、锌制零件的钎焊Soldering of copper, copper alloys, steel and zinc parts.
铜及铜合金、钢、锌制零件的钎焊Soldering of copper, copper alloys, steel and zinc parts.
铜及铜合金、钢、锌制零件的钎焊Soldering of copper, copper alloys, steel and zinc parts.
铜及铜合金、钢、锌制零件的钎焊