When a custom plastic mold contains a proprietary mechanism, put the protection requirements in the project documents before ordering. The terms should clarify who owns the mechanism and related tooling, how they may be used, who can access design information, what confidentiality applies, and how revisions are approved. These provisions should cover the full project, from trials and samples through production and after-sales support.
Technical specifications describe the mold; they do not establish intellectual-property ownership or restrictions on use. Longterm lists S50C and P20 mold bases, 718H, 1.2738, and S136 cavity steels, optional cold or hot runner systems, a precision tolerance of ±0.02 mm, and a mold-life range of 50,000–1,000,000 shots. Ask for separate written terms addressing the proprietary mechanism.
Those terms should cover ownership, authorized production and reuse, access to design files, confidentiality, and approval of changes. Also clarify how they apply during mold trials, dimensional checks, pre-shipment inspection, maintenance guidance, spare-parts supply, and online technical assistance. Longterm’s product information describes these services but does not set out associated ownership or confidentiality provisions.
The listed minimum order quantity is one mold set, with a typical delivery period of 25–40 days. Longterm describes several business models, including custom mold making with injection molding, high-precision molds such as double-shot and overmold tooling, and mold development followed by plastic-part production. Specify the chosen scope, schedule, and mechanism protections in the order documents.
Longterm lists ISO 9001:2015 certification, number 02825Q12549R0S, covering the design, manufacture, and sale of precision molds and the sale of plastic products. Its case information includes an electronic housing mold for Italy, a French double-shot overmolding project, a home-appliance mold for the US, and an industrial plastic-part mold for Australia. These details describe company capabilities and projects, not the protection terms for a proprietary mechanism.
The company’s product information identifies custom plastic injection tooling as an offering. Make sure the final agreement defines how the mechanism and related design materials will be handled throughout the selected tooling and production services.
| Area | What the product information says | What to document |
|---|---|---|
| Ownership and use | No ownership or permitted-use provisions are stated. | Name the owner and define permitted use of the mechanism, mold, and design information. |
| Confidentiality and access | No confidentiality or design-file access rules are provided. | Set access limits and confidentiality expectations for technical details and files. |
| Revisions | Mold modification support is mentioned for one service model, but approval terms are not specified. | Describe how proposed changes are submitted, reviewed, and authorized. |
| Trials, inspection, and samples | Mold trials, dimensional inspection, and full pre-shipment inspection are listed. | Explain how inspection and sample approval will account for the documented mechanism design. |
| Technical support | Online assistance, maintenance guidance, and spare parts are listed. | Define the support scope and any applicable confidentiality or access conditions. |
No. The information lists mold specifications, inspection services, and after-sales support, but does not specify ownership, confidentiality, exclusivity, or permitted-use provisions. Request project-specific written terms.
Identify the mechanism along with the relevant mold, drawings, samples, design revisions, and production scope. The listed materials, runner options, tolerance, and mold-life range can help describe the tooling covered by the project documents.
The product information names mold trial testing, dimensional inspection, and a full inspection before shipment. Relevant business-model descriptions also refer to sample confirmation, first-article inspection, and mold-running tests.
Before commissioning a mold that incorporates a proprietary mechanism, record ownership, authorized use, confidentiality, file access, and change-approval requirements in the project agreement. Do not assume that these protections are included in technical specifications or support services. Longterm lists ISO 9001:2015 certification and custom mold-making and injection-molding options. For technical information or support, contact rogerluo@longterm-mold.com.
Longterm Manufacturing Solutions Limited is a mold manufacturer established in 2010, serving customers in the US, Europe, Australia, and other international markets. Its services include mold design, tooling, precision machining, mold manufacturing, and parts production. The company reports an R&D team of five engineers focused on molds and precision machining, with capabilities in injection-mold structural design and manufacturing-process optimization. Its stated ISO 9001:2015 certification covers precision-mold design, manufacturing, and sales, and its case information includes consumer electronics, home appliances, and industrial equipment.

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