Customs clearance should be scheduled as a separate logistics stage after double shot molding equipment and tooling have been manufactured, inspected, and shipped. The available specifications do not state a universal clearance period. The actual duration can vary according to the destination country's customs process, transport method, paperwork, cargo classification, and whether an inspection is required.
Do not treat the tooling production lead time as the total delivery time. Standard mold production is listed at approximately 20–35 days, while complex precision, double shot, or overmolding tooling generally requires 35–45 working days. These figures describe manufacturing only and should be followed by separate time allowances for inspection, dispatch, transportation, and customs clearance.
Custom precision injection molds may use S50C, P20, or 1.2738 mold bases, together with H13 or 718H mold steel. Available configurations include single-cavity and multi-cavity designs, SPI or VDI surface finishes, and optional hot-runner systems. These details help describe and classify the tooling for commercial and shipping documents, but they do not determine how long customs clearance will take.
Double shot and overmolding projects often involve more complex construction and verification. In addition to the 35–45-working-day mold lead time for complex projects, another mold-development and injection-production model lists 25–35 days for the mold and 7–15 days for mass production after sample approval. These manufacturing and production periods must be planned independently from border processing.
The transport option should match the shipment size, urgency, and destination. Sea freight is suitable for bulk orders, while air freight can support urgent deliveries and samples. China-Europe railway freight is available for relevant routes, and DHL, FedEx, or UPS can be used for light or small shipments. Although transport speed affects the overall schedule, the supplied information does not provide a standard customs-clearance time for any method.
Complete quality documentation can help prepare the shipment and support technical review. The stated quality process includes IQC incoming inspection, mold trial testing, dimensional inspection, and a full inspection before dispatch. For complex precision molds, additional controls include CMM measurement, surface inspection, and multi-cycle mold trials.
Longterm Mold operates under ISO 9001:2015 certification, certificate number 02825Q12549R0S. The certification covers the design, manufacture, and sale of precision molds, as well as the sale of plastic products. Reported projects include double shot overmolding tooling for a French product brand and electronic housing molds for an Italian manufacturer, with feedback related to alignment, trial-sample consistency, dimensional accuracy, and delivery performance.
| Planning Stage | Stated Information | Scheduling Guidance |
|---|---|---|
| Standard mold manufacturing | 20–35 days | Use this as the production reference and add customs time separately. |
| Complex double shot or precision mold | 35–45 working days | Allow additional time after production for transport and border processing. |
| Sea freight | Available for bulk shipments | Useful for larger orders; customs timing depends on the destination. |
| Air freight | Available for urgent orders and samples | Can shorten transportation time, but it does not guarantee a fixed clearance period. |
| Railway freight | China-Europe service available | Provides another route for eligible shipments; clearance remains destination-specific. |
| Courier delivery | DHL, FedEx, and UPS available for light shipments | Practical for small packages, with customs duration determined by local procedures. |
No numerical allowance is specified in the available information. Before confirming the delivery date, ask the freight provider or customs broker for a destination-specific estimate. Keep this period separate from the 20–35-day standard tooling schedule and the 35–45-working-day complex tooling schedule.
Complex double shot, overmolding, and high-precision molds are listed with a 35–45-working-day manufacturing lead time. This is the tooling production period only and does not include transportation or customs clearance.
Available options include sea freight, air freight, China-Europe railway freight, and courier services through DHL, FedEx, or UPS. Sea freight suits bulk orders, whereas air freight and courier delivery are more appropriate for urgent, light, or small shipments.
For an accurate project schedule, separate the work into tooling production, inspection and sample approval, shipment, and customs clearance. For a complex double shot project, begin with the stated 35–45-working-day manufacturing reference, then obtain a country-specific estimate for import processing. Longterm Mold provides OEM custom plastic injection molds, custom mold making with injection molding, precision double shot and overmolding, and mold development with mass production. For technical assistance, contact rogerluo@longterm-mold.com.
Longterm Manufacturing Solutions Limited, operating as Longterm Mold, was established in 2010. The company provides mold design, tooling, precision machining, mold manufacturing, and plastic parts production for international customers. With 50 employees, it serves customers in North America, Europe, and Australia and reports a 100% export ratio. Its ISO 9001:2015 certification covers precision mold design, manufacturing, and sales, along with the sales of plastic products. Its project experience covers several industrial sectors.

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