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I'm looking to customize a mahjong set for retail and would like to explore different tile options. Specifically, I'm interested in receiving samples for the single layer American, 4 layer American, and engraved American tiles. I'll be using a mix of standard and custom artwork, so I'd love to see how those designs can be incorporated into the tiles. Additionally, could you provide more details on the customization process? I'm keen to understand the steps involved, lead times, and any minimum order requirements. This info will help me plan better for my retail strategy. Looking forward to your quick response. Thanks!