Supply of H-beam steel

 Galvanized steel sheet 5

 Supply of dust screen, speaker grille

 Hot rolled plate 8

 HRB500E deformed steel bar-1

 Coating product 38

 Supply of REGIN carbonic oxide transmitter, carbon dioxide transmitter

 Supply of 304 hygiene-grade seamless pipe 102

 Supply of Airindex and Airindex sensor

 Coating product 33

 Imported cold rolled coil 11

 Galvanized steel sheet 1

 Round steel 35

 Laigang H-beam steel for spandrel girder

 1KΩ capacitance burn-in shelving thermistor

 Industrial connector

 Customizable round single-face strong magnetic sheet, quality single-face NdFeB strong magnate

 Deformed steel bar HRB400

 Siemens 3UA5940-2A thermal overload relay (2)

 Supply of loudspeaker screen, earphone dust screen

 NAIS Relay

 PIR-700 intelligent complex feeder protection apparatus

 Round steel 19

 Cold rolled coil 0

 Supply of DNH MH-15T, 15W, 100V loudspeaker

 Supply of connector

 Siemens 3UA5940-2A thermal overload relay (1)