Before shop primer is applied, dust, sand residue, crushed steel shot or grit and all other contaminants must be removed from the surface using a vacuum cleaner, air blower, etc.

• 当车间底漆涂装之前,应用真空清洁器、鼓风装置除去表面的灰尘、残砂、碎钢粒以及其他污染物。