Purchasing factory surplus electronic materials at high prices, recycling electronic inventories, electronic component recycling, IC chip recycling, diode and transistor recycling, memory chip recycling, tantalum capacitor recycling, inductor bead recycling, crystal oscillator recycling, filter recycling, purchasing connectors, recycling switches and other electronic components; various power transistors, field-effect transistors, silicon-controlled rectifiers, three-terminal regulators, rectifier bridges, optocouplers, relays, transformers; purchasing tantalum capacitors, inductors, magnet beads, electrolytic capacitors. Memory chips, storage devices, K9K, K9F, K4Shy, single-sided machines, PIC, 12F, 16F, 18F, 24C series, MTK series communication ICs, MP3/MP4 memory chips, FLASH flash memory, through-hole DIP surface mount SMD components, OV series camera ICs, SPHE series, SAA series, XC series, RT series, TDA series, CS series, ATJ2091 main controller... computer accessories, hard drives, memory sticks, BGA (north and south bridge).