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Paints and coatings. Chemical solution that serves to form a coating of manganese phosphate on a metal surface. , crown and pinion gear on differential gearboxes, piston rings, drill bit arms on oilfield. Commonly used when there are two metal friction without bearings such as a motorcycle rear wheel swing arm, screw jack car, etc. The process takes place at a temperature of 90 ~ 96 oC.
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