Use 'deal in' to describe the specific goods or services a company offers.

Business Context

Emphasize a business's area of expertise or specialization through 'deal in'.

Specialization

'Deal in' can imply a wide variety of items within a particular category.

'Deal in' reflects the diverse responsibilities of handling human resources.

Shows a person's capability to manage a range of duties or challenges.

Suggests someone's role in addressing and resolving problems.