1：高价收购IC各种品牌芯片：内存IC，通信IC，手机IC，BGA芯片，裸片IC，单片机IC，电脑IC，蓝牙IC，南北桥，显卡芯片，IC，摄.像头IC，家电IC，汽车IC，IC等等IC。（长期高价收购ALTER，MAXIM美信，TEXASINSTRUMENTS德州，ATMEL爱特梅尔，FREESCALE飞思卡尔，NS国半，ADI，BROADCOM博通，XILINX赛灵思，MICRON,镁光，NVIDIA，SII精工，TOSHINA东芝，RENESAS瑞萨，NXP，ST，INFINEON英飞凌，SAMSUNG三星，HNNIX现代，INBOND，SPANSION飞索，CYPRESS,REALTEK，HITTITE，MICROCHIP，SUNPLUS，LATTICE，INTERSIL，ON，FAIRCHILD，海思，展讯，昂宝，等等品牌IC芯片电子料。）江门收购废旧电子上门收购
2：回收内存芯片长期收购内存芯片，内存颗粒，内存条，FLASH芯片，闪存，显存，CF卡，SD卡，TF卡，MP3/MP4/MP5拆机FLASH，SSD固态硬盘，等等内存物料。（高价回收SAMSUNG三星内存芯片，HNNIX现代内存芯片，TOSHIBA东芝内存芯片，MICRON镁光内存芯片，INTEL英特内存芯片，SPANSION飞索内存芯片，尔必达内存芯片，INBOND华邦内存芯片等等品牌内存。）
3：回收三极管长期收购三极管，贴片三极管，可控硅，场效应管，MOS管等等物料。(FAIRCHILD仙童，TOSHIBA东芝，ON，ST，INFINEON英飞凌，NS国半，长电，IR等等品牌三极管。)江门收购废旧电子上门收购
4：回收IG模块长期收购IG模块（富士，三菱，INFINEON英飞凌，西门康等等品牌IG模块。回收继电器长期收购继电器（欧姆龙，宏发，，泰科等等品牌继电器。
5：回收电容、电感、电阻、磁珠、晶振、滤波器长期回收电容，电感，电阻，磁珠，钽电容，电容，贴片电容，穿心电容等等。（村田，三星，安华高科，TDK电感，三和，X钽电容，KEMET基美钽电容，黑金刚，红宝石，三洋，等等品牌物料）
长期回收以下型号：
UPD78F0454GK-GAJ-AX
UPD78F0455GA-HAB-AX
UPD78F0455GB-GAH-AX
UPD78F0455GK-GAJ-AX
UPD78F0461GB-GAH-AX
UPD78F0461GK-GAJ-AX
UPD78F0462GB-GAH-AX
UPD78F0462GK-GAJ-AX
UPD78F0463GB-GAH-AX
UPD78F0463GK-GAJ-AX
UPD78F0464GB-GAH-AX
UPD78F0464GK-GAJ-AX
UPD78F0465GB-GAH-AX
UPD78F0465GK-GAJ-AX
UPD78F0471GC-GAD-AX
UPD78F0471GK-GAK-AX
UPD78F0472GC-GAD-AX
UPD78F0472GK-GAK-AX
UPD78F0473GC-GAD-AX
UPD78F0473GK-GAK-AX
UPD78F0474GC-GAD-AX
UPD78F0474GK-GAK-AX
UPD78F0475GC-GAD-AX
UPD78F0475GK-GAK-AX
UPD78F0481GC-GAD-AX
UPD78F0481GK-GAK-AX
UPD78F0482GC-GAD-AX
UPD78F0482GK-GAK-AX
UPD78F0483GC-GAD-AX
UPD78F0483GK-GAK-AX
UPD78F0484GC-GAD-AX
UPD78F0484GK-GAK-AX
UPD78F0485GC-GAD-AX
UPD78F0485GK-GAK-AX
UPD78F0491GC-GAD-AX
UPD78F0491GK-GAK-AX
UPD78F0492GC-GAD-AX
UPD78F0492GK-GAK-AX
UPD78F0493GC-GAD-AX
UPD78F0493GK-GAK-AX
UPD78F0494GC-GAD-AX
UPD78F0494GK-GAK-AX
UPD78F0495GC-GAD-AX
UPD78F0495GK-GAK-AX
UPD78F0500AFC-AA3-A
UPD78F0500AMCA2-CAB-G
UPD78F0500AMCA-CAB-G
UPD78F0500AMC-CAB-AX
UPD78F0500MC(A)-CAB-AX
UPD78F0500MC(A2)-CAB-AX
UPD78F0500MC-5A4-A
UPD78F0501AFC-AA3-A
UPD78F0501AMC-CAB-AX
UPD78F0501FC-AA3-A
UPD78F0501MC(A)-CAB-AX
UPD78F0501MC(A2)-CAB-AX
UPD78F0501MC-5A4-A
UPD78F0502AFC-AA3-A
UPD78F0502AMC-CAB-AX
UPD78F0502FC-AA3-A
UPD78F0502MC(A)-CAB-AX
UPD78F0502MC(A2)-CAB-AX
UPD78F0502MC-5A4-A
UPD78F0503AFC-AA3-A
UPD78F0503AMCA2-CAB-G
UPD78F0503AMC-CAB-AX
UPD78F0503DAFC-AA3-A
UPD78F0503DAMC-CAB-AX
UPD78F0503DFC-AA3-A
UPD78F0503DMC-5A4-A
UPD78F0503MC(A)-CAB-AX
UPD78F0503MC(A2)-CAB-AX
UPD78F0503MC-5A4-A
UPD78F0503MCA
UPD78F0504AMCA2-CAB-G
UPD78F0504AMCA-CAB-G
UPD78F0505AMCA2-CAB-G
UPD78F0505AMCA-CAB-G
UPD78F0506AMCA2-CAB-G
UPD78F0506AMCA-CAB-G
UPD78F0507AMCA2-CAB-G
UPD78F0507AMCA-CAB-G
UPD78F0507DAMC-CAB-AX
UPD78F0511AGAA-GAM-G
UPD78F0511AGA-GAM-AX
UPD78F0511AGBA-GAF-G
UPD78F0511AGB-GAF-AX
UPD78F0511AMCA2-GAA-G
UPD78F0511AMCA-GAA-G
UPD78F0511AMC-GAA-AX
UPD78F0511GA(A)-GAM-AX
UPD78F0511GA(A2)-GAM-AX
UPD78F0511GA-8EU-A
UPD78F0511GB(A)-GAF-AX
UPD78F0511GB(A2)-GAF-AX
UPD78F0511GB-UES-A
UPD78F0512AGAA-GAM-G
UPD78F0512AGA-GAM-AX
UPD78F0512AGBA2-GAF-G
UPD78F0512AGB-GAF-AX
UPD78F0512AMCA2-GAA-G
UPD78F0512AMCA-GAA-G
UPD78F0512AMC-GAA-AX
UPD78F0512GA(A)-GAM-AX
UPD78F0512GA(A2)-GAM-AX
UPD78F0512GA-8EU-A
UPD78F0512GB(A)-GAF-AX
UPD78F0512GB(A2)-GAF-AX
UPD78F0512GB-UES-A
UPD78F0513AGAA2-GAM-G
UPD78F0513AGAA-GAM-G
UPD78F0513AGA-GAM-AX
UPD78F0513AGBA2-GAF-G
UPD78F0513AGBA-GAF-G
UPD78F0513AGB-GAF-AX
UPD78F0513AMCA2-GAA-G
UPD78F0513AMCA-GAA-G
UPD78F0513AMC-GAA-AX
UPD78F0513DAGB-GAF-AX
UPD78F0513DAMC-GAA-AX
UPD78F0513DGB-UES-A
UPD78F0513GA(A)-GAM-AX
UPD78F0513GA(A2)-GAM-AX
UPD78F0513GA-8EU-A
UPD78F0513GB(A)-GAF-AX
UPD78F0513GB(A2)-GAF-AX
UPD78F0513GB-UES-A
UPD78F0514AGAA-GAM-G
UPD78F0514AGA-GAM-AX
UPD78F0514GA(A)-GAM-AX
UPD78F0514GA(A2)-GAM-AX
UPD78F0514GA-8EU-A
UPD78F0515AGA(A)-GAM-AX
UPD78F0515AGAA-GAM-G
UPD78F0515AGA-GAM-AX
UPD78F0515DAGA-GAM-AX
UPD78F0515DGA-8EU-A
UPD78F0515GA(A)-GAM-AX
UPD78F0515GA(A2)-GAM-AX
UPD78F0515GA-8EU-A
UPD78F0516AGAA2-GAM-G
UPD78F0516AGAA-GAM-G
UPD78F0517AGAA2-GAM-G
UPD78F0517AGAA-GAM-G
UPD78F0517DAGA-GAM-AX
UPD78F0521AGBA2-GAG-G
UPD78F0521AGBA-GAG-G
UPD78F0521AGB-GAG-AX
UPD78F0521GB(A)-GAG-AX
UPD78F0521GB(A2)-GAG-AX
UPD78F0521GB-UET-A
UPD78F0522AGBA2-GAG-G
UPD78F0522AGBA-GAG-G
UPD78F0522AGB-GAG-AX
UPD78F0522GB(A)-GAG-AX
UPD78F0522GB(A2)-GAG-AX
UPD78F0522GB-UET-A
UPD78F0523AGBA2-GAG-G
UPD78F0523AGBA-GAG-G
UPD78F0523AGB-GAG-AX
UPD78F0523GB(A)-GAG-AX
UPD78F0523GB(A2)-GAG-AX
UPD78F0523GB-UET-A
UPD78F0524AGBA2-GAG-G
UPD78F0524AGB-GAG-AX
UPD78F0524GB(A)-GAG-AX
UPD78F0524GB(A2)-GAG-AX
UPD78F0524GB-UET-A
UPD78F0525AGBA2-GAG-G
UPD78F0525AGBA-GAG-G
UPD78F0525AGB-GAG-AX
UPD78F0525GB(A)-GAG-AX
UPD78F0525GB(A2)-GAG-AX
UPD78F0526AGBA2-GAG-G
UPD78F0526AGBA-GAG-G
UPD78F0526AGB-GAG-AX
UPD78F0526GB(A)-GAG-AX
UPD78F0526GB(A2)-GAG-AX
UPD78F0526GB-UET-A
UPD78F0527AGBA2-GAG-G
UPD78F0527AGBA-GAG-G
UPD78F0527AGB-GAG-AX
UPD78F0527DAGB-GAG-AX
UPD78F0527GB(A)-GAG-AX
UPD78F0527GB(A2)-GAG-AX
UPD78F0527GB-UET-A
UPD78F0531AFC-AA1-A
UPD78F0531AGA-HAB-AX
UPD78F0531AGBA2-GAH-G
UPD78F0531AGBA-GAH-G
UPD78F0531AGB-GAH-AX
UPD78F0531AGCA2-GAL-G
UPD78F0531AGCA-GAL-G
UPD78F0531AGC-GAL-AX
UPD78F0531AGKA2-GAJ-G
UPD78F0531AGKA-GAJ-G
UPD78F0531AGK-GAJ-AX
UPD78F0531GA-9EV-A
UPD78F0531GB(A)-GAH-AX
UPD78F0531GB(A2)-GAH-AX
UPD78F0531GB-UEU-A
UPD78F0531GC(A)-GAL-AX
UPD78F0531GC(A2)-GAL-AX
UPD78F0531GK(A)-GAJ-AX
UPD78F0531GK(A2)-GAJ-AX
UPD78F0531GK-UET-A
未投入使用的变压器可以通过试验来判断是否正常。试验项目有:绕组电阻测量，电压变比测试，绝缘电阻测量，绕组变形测试，绝缘油测试，局放试验等来判断变压器是否正常。运行中的变压器如果有不正常的现象也可以停电后通过试验来判断是否正常。试验结果与出厂试验或上一次试验结果做比较，不应有太大的偏差。具体的值和变压器容量有关系，在这就不多讲了。微型变压器。电压比较低容量比较小或电子设备上用的变压器可以通过观察有无放电痕迹和测量一二次电压是否正常的方式判断好坏。