AMTECH NC-559-ASM No-Clean Tacky Gel Solder Flux 10cc X1 Kit
10CC Needle Tube Welding Oil Lead Free and Halogen-free Soldering Flux AMTECH NC-559-ASM BGA SMD PCB Phone Repair Cleaning-free. The residue after soldering is transparent, the solder ball is bright, and it does not contain halogen(F / CL / Br / I) substances.