Profile: XL Addenda, Inc. is a provider of component sealing, lead trimming and solder tinning services for printed circuit board industries. Our component sealing polymer is a unique process that applies a waterproof, removable seal coating to any size switch and trim pot & a unique soft polymer coating protects the components from process contaminants include solder washes. We also offer solder tinning for the component leads. Our lead trimming is used to trim the components.