Honing knowledge and aesthetic sense as a "leather professional." This book is a complete study guide for the Leather Sommelier Professional (Intermediate) exam, featuring 100 questions with detailed answers and explanations. It systematically organizes information on materials, processing, manufacturing, distribution, and marketing, providing practical knowledge useful in all aspects of leather product sales, planning, and manufacturing. --- Contents and Features of This Book • Chapter 1: Types of Leather Materials and Manufacturing Processes Detailed explanations of raw hide types, tanning (tannin and chrome), finishing processes, dyeing, and texture adjustments. • Chapter 2: Leather Characteristics and Selection Criteria by Product Learning about the optimal materials and processing methods for shoes, bags, clothing, interiors, and other purposes. • Chapter 3: Quality and Inspection Standards for Leather Products Includes knowledge of quality evaluation, such as thickness, elasticity, durability, fastness, and abrasion tests. • Chapter 4: Sales and Marketing Knowledge Organizes practical knowledge for the field, including brand strategy, traceability, ethical materials, and customer service. • Chapter 5: Environmentally Sustainable Leather Covers the latest topics, including LWG certification, recycled leather, vegetable tanning, and environmentally friendly manufacturing methods. • Chapter 6: Professional Sensibility In-depth consideration of leather aging, design inspiration, the aesthetics of handcraftsmanship, and the fusion of materials and culture. --- 100 questions with detailed answers and explanations, completely covering the exam scope. Organizes knowledge of the entire industry, from materials and manufacturing to distribution and sales, all in one book.