With little to go on based on the information provided other than you have already developed ads for this reach stacker line.
As a suggestion you might want to first have this company identify the key markets that they now serve and have a good reputation in (I am assuming this company is from overseas somewhere) or have them identify what markets this product line was designed to serve. Hopefully, the ads that are already developed are aimed at some of these markets. What was very helpful to the ad agencies I've worked with I (as Product Manager) would provide a product briefing - detailing this type of information along with key & unique design features/benefits, marketing objectives, target markets, budgets, etc. Then the Ad Company prepared a plan accordingly.

Once the key markets are IDd and importance prioritized then you can start your search of publications or other media to introduce the product. Hopefully, this product line as something unique to promote vs. another "me too".

When you say reach stacker, it could mean a container handler (80-100,000 lb. lift capacity) or some people refer to a narrow aisle, electric, standup rider, reach truck (2500-4500 lb. lift capacity) as a "reach stacker"