... -Tarnish Acrylic Resin JC-2050 lacquer is used in the post-treatment for deposits with transparent or black passivation films such as ... PH value in the range of 7.5-9.5 and make the solution clear. Working condition Immersing time 10—30 ... , VS, EHS,BBI..Impurity ToleranceATPN , SSO3, PN, PZN, FEZX ..Brighter and leveling agent at low area lightPOPDH, PS, POPS,..Low foam ...