The text you provided cannot be immediately rewritten and improved because it is marked as "nan" or not applicable. To develop a valuable product description, consider including essential information such as the type of learning material, the language level, the appropriate target audience (such as education, work, or self-study), and the product's benefits.
For example, specifications such as the language level—from beginner (A1) to advanced (C2)—and the language (such as Dutch, French, or Spanish) should be included. Also mention that Intertaal is a reliable supplier that guarantees fast delivery, which can increase confidence in the purchase.