Zinthobrite CLZ 937 / 942 / 978 Process Description Application: A versatile chloride Zinc process for producing extremely bright and levelled Zinc deposits both in the rack and barrel plating systems. The Growel Advantage: It is very tolerant to impurities like iron and possesses remarkable levelling and ductility properties. The Zinthobrite processes offer great receptivity to all chromate conversion processes. get a quote