巴西采购需求：和纸胶带、计划贴纸、牛皮便签、日记卡、翻领别针、金属书签

I'm looking for a product with the following specifications: a roll that's 10 meters long and 15 mm wide. The pattern should repeat every meter. Could you suggest a suitable core and provide options for different quantity ranges? Also, I'd like details on packaging based on your suggestions. Regarding the quotation, please clarify the differences between EXW, FOB, and CIF to help me decide. How can I share my designs for quotes and samples? Do you also offer samples of your existing designs? Lastly, I want to ensure my designs remain confidential and would like to know if you can brand the inside/core of the roll.