| Common Materials | Polypropylene (PP) and ABS are commonly used for plastic mahjong racks. | Both materials are lightweight, impact-resistant, and suitable for repeated household use. | Request the material specification and confirm whether recycled content is included. |
| Typical Rack Length | Approximately 35–42 cm per rack, depending on the tile size and design. | The size should provide enough space for standard mahjong tiles while remaining easy to store. | Match the rack length with the target tile dimensions before placing a bulk order. |
| Typical Rack Height | Approximately 2.5–5 cm, depending on the support angle and profile. | A suitable height helps keep tiles upright and visible during play. | Check stability on a flat surface and test the rack with a complete row of tiles. |
| Approximate Unit Weight | About 40–120 g per rack for common injection-molded designs. | Lower weight can reduce shipping costs and make the product easier to handle. | Confirm the finished weight after adding non-slip pads, packaging, or accessories. |
| Manufacturing Process | Injection molding is the standard process for producing consistent plastic racks. | It supports repeatable dimensions, smooth surfaces, and efficient production at volume. | Ask for a pre-production sample to check flash, warping, surface marks, and fit. |
| Color Options | Standard colors may include black, white, red, blue, green, and neutral tones. | Color selection supports different market preferences and product assortments. | For customized colors, provide a recognized color reference and approve a physical sample. |
| Customization Capability | Common options include color changes, surface texture, dimensions, packaging, and embossed markings. | Flexible customization can help match regional retail requirements and packaging formats. | Tooling, sampling, and setup charges should be listed separately in the quotation. |
| Packaging Efficiency | Racks can usually be nested or packed in compact sets to reduce unused carton space. | Compact packing improves carton utilization and may lower the freight cost per unit. | Request carton dimensions, gross weight, net weight, and units per carton before shipment. |
| Wholesale Order Scale | Minimum order quantities vary widely; stock items may accept smaller quantities, while custom items generally require larger runs. | Larger production runs usually improve mold utilization and unit-cost efficiency. | Compare the unit price at several quantity levels rather than evaluating only one MOQ. |
| Quality Control Points | Key checks include dimensions, material consistency, surface finish, stability, odor, and packaging integrity. | These checks help maintain safe, consistent performance across large shipments. | Use an agreed inspection checklist and define acceptable defect limits before production. |
| Export Documentation | Commercial invoices, packing lists, shipping documents, and applicable customs information are commonly required. | Complete documentation supports smoother customs clearance and shipment tracking. | Confirm the destination country's labeling, packaging, and import requirements in advance. |
| Supplier Comparison Criteria | Compare material, dimensions, sample quality, production capacity, lead time, packaging, and total landed cost. | A complete comparison is more reliable than choosing solely by the lowest unit quotation. | Evaluate product, tooling, inspection, freight, duties, and delivery costs together. |