南非采购需求：钢笔OEM、中性笔、钢笔、金属笔、文具批发、中国钢笔厂

I'm reaching out from South Africa to find a reliable manufacturer for custom dot journals. I'm interested in options with 140-160 gsm paper or heavier, featuring at least 180 pages. The layout should include a dot grid with page numbers for easy navigation. It's crucial that the journals have a lay-flat binding, such as sewn or thread-sewn, to ensure they open flat at 180 degrees. For the cover, I'd like materials such as PU leather, fabric, or hardcover. Additional features should include an elastic closure, two ribbon bookmarks, and a back pocket for added functionality. I also prefer the internal pages to be an off-white or cream tone, ideally with gold or silver edges for a classic touch. Looking forward to your response!