Agency examines COVID-19 effects on professional tradesmen, manufacturers, trade media and influencers Sonnhalter, a communications firm marketing to the professional tradesman in the construction, industrial and MRO markets, created a comprehensive resource guide full of information regarding COVID-19 and its effects on the Business-to-Tradesmen (B2T) niche that Sonnhalter serves. Sonnhalter’s COVID-19 Tip Sheet is available Read more