The plating   material is evaporated too little.

Adjust the   equipment to increase the evaporation of plated materials.

Evaporation time   is too short.

Extended   evaporation time.

Operate under   insufficient vacuum.

Adjust the   equipment to increase the vacuum of the electroplating furnace.

Evaporation rate   is too slow.

Adjust equipment   to speed up evaporation of plating materials.

The primer is drying   incompletely.

Strengthening   curing (Increasing baking temperature, extending baking time or increasing UV   curing energy)