Case on the wholesale sale of mobile accessories

Customer assigned tasks: the customer purchased a test party of the goods and placed the task to test the niche.
What was done:
The semantic core.
Text of Advertisements
Created a search campaign in Google Ads
- Created advertising campaign for search in Yandex.Direct
Re-marketing advertising campaigns
Advertising campaigns are launched
A month later I had to stop advertising because the customer had finished the product.