Design, manufacturing, processing, and sales of automotive parts, automotive door limiters, hinges, door locks, chassis components, automotive electrical components, molds, power electronic components, electronic components and assemblies, vehicle-specific lighting and electrical signal equipment; Manufacturing, processing, and sales of automotive plastic and rubber parts; Self-operated and agency import and export business of various goods and technologies (excluding goods and technologies restricted or prohibited by the state); (The following items are only for branch operations): Metal surface treatment.