Kaleja relay

 Supply of tributyl phosphate (industrial grade)

 Supply of quality heat-resisting conductive resin

 Supply of HCNR200, HCNR201 and LOC110 high linear photoelectric coupler

 Supply of single-phase 90W adjustable-speed motor, 40KB gearbox, 15mm output shaft speed regulator

 MCO500-16IO1,MCO500-18IO1 IXYS module

 Combined drill pipe torsion tester

 Supply of indoor instrumental examination magnifying glass

 Supply of LR2512 F 1% 0.001Ω 1mΩ alloy resistor

 Supply of BEL fuse MRT3.15

 Supply of pure palladium chloride

 Environmental transparent all-purpose adhesive

 Imported sand belt

 Supply of HB-2 Brinell hardenss tester (hammer type)