Item
Registration No.
Remark
Synthetic pipe joint
Utility Model Registration No. 073887
Tube connector
Utility Model Registration No. 074558
Tube connector
Utility Model Registration No. 076582
Hose connector
Utility Model Registration No. 084142
Tube connector
Utility Model Registration No. 095885
Tube connector
Utility Model Registration No. 101234
Pipe connector
Utility Model Registration No. 103237
Pipe connector
Utility Model Registration No. 110593
Tube connector supporting tool
Utility Model Registration No. 114249
Latched wrench for piping
Patent No. 130933
Tool with chamfered pipe
Utility Model Registration No. 139075
Clamper for table pipe
Patent No. 0203563
Pipe wrench
Patent No. 178964
Water closet using house waste water
Patent No. 225966
Flush water feeder for water closet
Patent No. 225780
Pipe wrench
Utility Model Registration No. 159061
Pipe machining M/C
Utility Model Registration No. 171206
Wash water feeder for water closet with house waste water
Utility Model Registration No. 159227
Flush water feeder for water closet with house waste water
Patent No. 226143
C/S  
40 pending domestic and foreign patents