| 1 Compare like-for-like pricing | Unit price by trampoline size, configuration, and order quantity | A basic 8–12 ft residential trampoline commonly has a factory quotation in the approximate range of US$100–US$300 per unit before freight, taxes, accessories, and customization. | Confirm whether the price includes the frame, jumping mat, springs, enclosure net, ladder, packaging, spare parts, and applicable testing. | Unusually low quotations that exclude safety components, packaging, inspection, or export documentation. |
| 2 Check minimum order quantities | MOQ for standard products, colors, packaging, and private-label customization | Standard products may be available from approximately 50–200 units, while custom colors, printed packaging, or modified tooling may require 300–1,000 units or more. | Request separate MOQs for stock items, custom fabric colors, logo printing, cartons, instruction manuals, and product redesigns. | One MOQ is quoted without clarifying whether it applies to the total order, each model, each color, or each packaging version. |
| 3 Evaluate manufacturing lead times | Sample time, production time, and peak-season capacity | Samples often require 7–20 days; standard production commonly takes 25–45 days after deposit and artwork approval. Custom tooling can add 15–40 days. | Obtain a written schedule covering sample approval, material purchasing, production, quality inspection, packing, and shipment release. | The supplier provides only a broad delivery promise and cannot identify the production milestone that starts the lead-time calculation. |
| 4 Calculate shipping costs correctly | Carton volume, gross weight, shipping mode, and destination charges | Ocean freight is generally the most economical option for commercial quantities. A retail-ready trampoline package may occupy roughly 0.15–0.40 m³ per unit, depending on size and packaging design. | Compare FOB, CIF, and DDP quotations and verify container loading quantity, port charges, customs duties, last-mile delivery, and insurance. | Freight is quoted without carton dimensions, gross weight, trade term, destination port, or validity period. |
| 5 Verify safety and compliance | Applicable standards, test reports, traceability, and corrective-action procedures | Depending on the sales market, requirements may include applicable consumer-product, mechanical-safety, chemical, labeling, and packaging regulations. Testing costs and requirements vary by product and destination. | Ask for current third-party reports, material declarations, batch traceability, warning labels, user instructions, and documentation matching the exact model. | Reports are expired, issued for a different model, missing test conditions, or supplied only as unverifiable screenshots. |
| 6 Inspect materials and construction | Steel specification, coating, spring performance, mat strength, net durability, and weld quality | Common residential frames use galvanized or powder-coated steel. Product specifications should clearly state tube dimensions, material treatment, spring count, mat material, and maximum user weight. | Review production samples, critical dimensions, weld photographs, corrosion-resistance evidence, load-test records, spare-parts availability, and inspection criteria. | Specifications use vague terms such as “heavy duty” without measurable steel thickness, coating process, load limit, or component details. |
| 7 Assess communication and after-sales support | Response time, warranty coverage, replacement parts, claims handling, and packaging support | A practical commercial warranty commonly covers manufacturing defects for approximately 12–24 months, subject to product terms. Replacement components should remain available beyond the initial shipment. | Confirm response-time expectations, defect thresholds, photo and video evidence requirements, spare-parts pricing, refund or replacement terms, and recall support. | Warranty terms exclude major structural or safety components, or the supplier refuses to document claims procedures before the purchase order. |