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LB-302 is an alkaline etching and plating resist, which provides excellent adhesion and resolution of patterns, self drying under high temperature. To use it, first use screen printing to generate the desired patterns on the circuit board, and then build the circuit by alkaline etching and plating. Useacid to remove it. Color:Black, blueViscosity:380 ± 20 ps at25 DegC, VT-04Pencil Hardness:1 - 2 HDrying Condition:Self dryingin less than 1.5 hrs under high temperature, or in 10 min under 100 DegCAdhesion:100/100Stripping:1 - 3% NaOH water solutionThinner:BCSPackage:5 Kg/BucketShelf Life:6 month at 25 DegC in dark areaApplication:used in printed circuit board (PCB), metal working