Supply of SP2223 32A concealed quadripuntal inclined socket for refrigerated container (used in low-temperature environment)

 Supply of mirror plane rolling tools, rolling and polishing tool, extrusion processing tool

 Supply of alumina electroplate polishing head for porcelain and polished stone

 Supply of resistor

 Supply of stainless-steel nonstandard connector

 Fire sharp axe

 WPI EVOM2 transmembrane cell resistance