| Internal heating soldering iron | ![]() |
| External heating soldering iron | ![]() |
| Flux (rosin) | ![]() |
| Solder resist (photocurable resin) | ![]() |
| Horizontal insertion method | ![]() |
| Vertical interpolation | ![]() |
| Ready | ![]() |
| Preheat | ![]() |
| Welding wire | ![]() |
| Shifting wire | ![]() |
| Shifting iron | ![]() |
| Pen-holding method: suitable for soldering printed circuit boards on the operating table | ![]() |
| Reverse grip method: suitable for high-power soldering iron operation | ![]() |
| Holding method: suitable for medium power soldering iron operation | ![]() |
AOI isn’t “extra QC”—it’s the only scalable way to police fine-pitch SMT.
— POE PCB/PCBA Manufacturer (@poe_pcba) March 24, 2026
It catches what eyes miss: tiny shifts (0402/01005), polarity, tombstones, bridges/opens—plus image evidence per board.
POE runs AOI as a hard-stop gate. DM “AOI”. #SMT #PCBA pic.twitter.com/vkvhB3IXnN
Email: all@poe-pcba.com
Whatsapp: 85292069596
Tel: 0755-25312250/ +8613798543496
Factory Address: Floor 3, Jinyuan Industrial Park, No. 56, Tangtou Avenue, Shiyan Town, Baoan District, Shenzhen China














