Zaryadka agency offers services of selling goods on the Internet with narrow demand and a price of 100,000 €. Here is an example of work on this service. Petrocommerce contacted us to boost sales of local treatment facilities. Such equipment is bought by pharmaceutical, chemical and galvanic industries in the Russian Federation, which need to treat wastewater. Petrocommerce offers Enviolet installations, which do not purify all types of water, but only certain, using ultraviolet radiation.Yandex.Direct and Google Adwords were launched as advertising channels on existing search demand. Over the next three months, we optimized traffic and conversion: removed inappropriate requests, tested different types of ads and blocks on the landing page. Key figures for the last year: 3616 visitors, 26 applications to the sales department, 3 potential transactions.