What specific content is required in the paperwork for a multi-entry 1-year business prospection visa application?

When applying for a multi-entry one-year business prospection visa for Thailand, the invitation letter from your Thai partner company should include specific and mandatory details about your mission. Additionally, the paperwork from the company sending you must include relevant information and letters that support your application. Key points to consider for both documents include the formal notification of employment, purpose of the visit, and supporting details confirming the business relationship.