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Patent
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Certificate of Utility Model 0185691 -
Zig for surface processing process(2000.04.04) -
Patent 2001-10-0543939
Patent 2001-10-0543939 - Device and Method for Heat Processing of Coated Object(2006.01.10) -
Patent 2006-10-0545306
Electrochemical Processing Method of Nitrate Wastewater(2006.01.16) -
Patent 2010-10-0995818
Radiant Tube(Ring)(2010.11.16) -
Patent 2010-10-1025615
Radiant Tube(Lap Joint)(2011.03.22) -
Patent 2014-10-1449463
Radiant Tube Reacting to Thermal Deformation(2014.10.02)
