Jongkind Substrates from Aalsmeer has existed since 1908 and supplies high-quality substrates, clay granules and other raw materials to professional horticulture. We have optimized the website for Jongkind Substrates (formerly Jongkind Grond) for search engines such as Google and Bing in collaboration with Jongkind IIS. Findability and visitor numbers are on the rise again since the adjustments.