I'd like your help regarding top coat for Ni-Cr process, I have one customer "TMP" .
They got a problem about rusty and yellowish stain. They just changed a new chemical to be Dipsol 424, don't have yellowish stain problem but still have rusty problem.
This chemical is like a milky oil, after they dip parts into this chemical have to rinse water 3 times.
So they still looking for a new product.