Cable terminals
Connection geometry, material & finish.
OEM & ODM
Custom electrical products,
developed around your requirements.
You do not need a complete drawing to start. Share your application, installation dimensions, performance requirements or a reference sample. SUNENG brings design development, CNC machining, prototyping, tooling and production through one supplier, with feasibility and sample approval before batch release.
- Drawing & sample review
- Materials & interfaces
- Prototyping & tooling
- Small batches & production
Explore our custom product range.
These product groups show the range of requests we can review. Feasibility depends on function, material, dimensions, quantity and verification needs. The catalogue does not limit your enquiry. Heat sinks & liquid cold plates: explore our dedicated custom manufacturing capability.
Copper busbars & flexible connectors
Current path, connection geometry & insulation.
Line fittings
Mounting interfaces & mechanical duty.
Glass insulators
Electrical class & mechanical interface.
Porcelain insulators
Profile, mounting & service conditions.
Switchgear & RMUs
Configuration, protection & site interfaces.
Transformers
Capacity, voltage & enclosure requirements.
CNC machined parts
Custom geometry, dimensions & tolerances.
What can be customized?
A clear brief separates the features that must stay fixed from the choices we can review together.
| Custom item | What we review | What to share |
|---|---|---|
| Dimensions & interfaces | Hole patterns, connection geometry, clearances and tolerances. | Dimensioned drawing, mating part or reference sample. |
| Material & finish | Material options, surface treatment and compatibility with service conditions. | Material specification, contact materials and operating environment. |
| Electrical & mechanical duty | Required ratings, loads and the verification scope for the specific product. | Application, target performance and required test conditions. |
| Prototype & tooling | Shape review, sample stages, tooling needs and approval points. | Critical features, intended process and sample quantity. |
| Quantity & delivery | Trial batches, production volume, marking, packaging and documents. | Order quantity, destination, target date and acceptance requirements. |
Copper-aluminium terminals: recorded test evidence.
Our in-house test sheets record resistance and temperature-rise measurements for SYG copper-aluminium terminals. They show how one product route can be supported with technical records while the scope, test conditions and product identity remain clear.
SYG-ZQ is our internal designation for this product line. The sheets are original in-house records, not an independent laboratory report or a universal performance claim for every custom part.
View the test records
From the first brief to an approved part.
Confirm the features that cannot change.
A drawing is useful, but it is not the only starting point. A reference part, installation dimensions or clear photographs can identify the interface that must be preserved.
We separate confirmed dimensions from assumptions and agree the missing inputs before making a sample.
Match the material to a practical process.
Material, contact surfaces, geometry and order quantity influence the production route. Forming, machining and tooling are reviewed against the specific part.
We confirm the material, process and acceptance requirements for your part before committing to production.
Approve the sample before batch production.
For suitable small parts, a 3D-printed shape sample can help confirm appearance, approximate size and installation fit before tooling.
A shape model does not replace a sample made in the final material or the agreed electrical and mechanical tests.
Agree what inspection must demonstrate.
Define dimensional checks, performance tests and acceptance documents for the product and application. Agree the test conditions before interpreting a result.
Sample approval and batch release are separate decisions. Keep the approved specification and inspection scope attached to the order.
Five steps to production release.
Each stage answers a different customer concern. Shape approval, material confirmation, performance verification and batch release are kept as separate decisions.
Clarify
Separate fixed interfaces from flexible details and record the unknowns.
Develop
Develop the structure, drawings and production plan around the confirmed material, interfaces and performance requirements.
Preview
For suitable small parts, a 3D-printed shape sample can confirm appearance, size and style before tooling.
Verify
Agree the material, dimensional, electrical or mechanical checks the sample must pass.
Release
Confirm the approved sample, documents, packaging, quantity and production conditions.
Plan the handover as carefully as the part.
Confirm marking, protective packaging, quantities and the documents needed at destination. The packing arrangement should suit the product and transport conditions.
Inspection records, packing details and dispatch requirements are agreed for the order before release.
Before you start a custom project.
Can you start when we do not have a complete drawing?
Yes, for a feasibility review. Parameters, installation dimensions, a reference sample or clear photographs can start the discussion. The missing dimensions, materials and verification requirements must still be confirmed before production.
Can you handle products outside the main categories shown here?
Yes, we welcome custom enquiries beyond the catalogue. We review the function, material, process, quantity and verification needs, then confirm feasibility and a development plan before accepting the production order.
Can a 3D-printed sample replace a final sample?
No. For suitable small parts, it helps confirm appearance, approximate size and style before tooling. It does not replace the final material, electrical, mechanical or environmental verification required for the product.
What determines price, minimum quantity and lead time?
Material, tooling or setup, process route, quantity, approval cycles, inspection, packaging and production capacity all affect the quotation. We confirm these conditions for the specific part.
Bring the drawing, sample or application requirement.
Tell us what must fit, what must perform and what is still uncertain. We will review feasibility, confirm the missing inputs and propose the next steps for design, sampling and production.
Start a custom part review