... solution 3. Competitive prices 4. Excellent customer service Aluminum Extension Ladder 24 ft. Shanghai Yi Jing Mold Factory Our ... (Zinc, Nickel, Chrome, Tin, Ag; Painting, Powder, Anodizing, E-coating, Silkscreen, Heat treatment, Black oxide) custom to customer's ... casting, injection molding. Usage of products: 24 ft. Aluminum Extension Ladder features heavy-duty spring loaded locks for smooth operation ...