It is widely used and can produce excellent coating effect on smooth surface.
Spraying - visual color decoration to understand the use of three anti-paint spray can-type products can be easily used for maintenance and small-scale production use, spray gun is suitable for the production of the big touch, but these two spraying methods for the accuracy of the operation, and may produce a shadow (the lower part of the component is not covered with three anti-paint).
Automatic dip coating - dip coating can ensure a complete coating, and will not cause excessive spraying caused by waste of materials.
Selective coating - coating is accurate and does not waste materials, suitable for large quantities of coating, but the coating equipment requirements are higher. Most suitable for large quantities of mulch. Use a compiled XY table to reduce masking. PCB board painting, there are many connectors need not paint. Adhesive paper is too slow and tear when there are too many residual glue, you can consider the shape, size, location of the connector, do a modular cover, with the installation hole location.