The flux leaves a nasty residue that is alcohol soluble, but the smell during soldering is definitely better than an "AMTECH" RMA-223-UV 100g tub that I bought from AliExpress as well. Performance seems fine, though maybe not as good as the other (smelly) AMTECH. The tube form definitely is more convenient than a tub. Pretty satisfied overall. NOTE: might be a QC issue but the plunger refuses to fit snugly into the tube, it's always wobbling around no matter how much of it I used.
The flux leaves a nasty residue that is alcohol soluble, but the smell during soldering is definitely better than an "AMTECH" RMA-223-UV 100g tub that I bought from AliExpress as well. Performance seems fine, though maybe not as good as the other (smelly) AMTECH. The tube form definitely is more convenient than a tub. Pretty satisfied overall. NOTE: might be a QC issue but the plunger refuses to fit snugly into the tube, it's always wobbling around no matter how much of it I used.