Precision PCB Services, Inc | https://precision-pcb-services-inc.com/products/amtech-nws-4400-ha-tf-water-washable-lead-free-tacky-solder-flux-rem1
: As a rule of thumb removing M1/H1 flux residues is paramount, however it is an easy task – use warm de-ionized water at 40-60°C with recommended water pressure of 30-50 PSI – NWS
ASCEN Technology | https://www.ascen.ltd/conformal_coating/618.html
is being rampantly used in various industries like the automotive, aviation, marine and medical. An efficient PCB protection will have good electrical characteristics, low moisture permeability, good chemical resistance and mechanical integrity
