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gate, draft and shrinkage review
engineering plastics and silicone
T0/T1 trial and validation
repeat molded component supply
Zhongzhu provides in-house mold making and injection molding support for housings, precision plastic parts, silicone components and assembly-ready molded products.
Wall thickness, ribs, bosses, undercuts, parting lines and gate marks are checked before cutting the mold.
Housings, clips, covers, supports and silicone components can be developed for fit, durability and appearance.
Mold making, trial samples, revision feedback and production molding are handled as one engineering workflow.
| Process scope | Mold design, mold making, injection molding, trial samples and production supply. |
|---|---|
| Materials | Engineering plastics, common thermoplastics and silicone materials confirmed by use case. |
| Part types | Housings, clips, covers, internal supports, sealing parts and custom molded components. |
| Mold review | Gate position, shrinkage, draft angle, wall thickness and assembly fit are checked before tooling. |
| Secondary options | Insert assembly, surface finishing, trimming, inspection and packaging. |
| Material target | Specify resin, flame rating, color, texture, UV resistance, stiffness or impact requirements. |
|---|---|
| Tooling requirements | Clarify cavity count, expected volume, mold life, parting-line preference and gate restrictions. |
| Assembly fit | Call out snap features, bosses, inserts, screw posts, sealing areas and mating components. |
| Cosmetic surfaces | Define texture, gloss, sink-sensitive areas and visible gate or ejector restrictions. |
| Validation | Sample approval can include dimension checks, assembly tests and material confirmation. |
Review plastic flow, wall thickness, draft, gate and shrinkage risk.
Build tooling plan and manufacture the injection mold.
Run trial shots, inspect samples and adjust tooling or parameters.
Produce molded parts with trimming, checks and packaging.
Uniform walls, ribs and bosses are reviewed to reduce sink, warp and short-shot risk.
Gate marks, parting lines and ejector marks are planned around visible and functional areas.
T0/T1 samples can be checked for fit, dimensions, appearance and assembly behavior.
Resin, color, texture and functional properties are managed according to project requirements.
Gate, draft and shrinkage review before tooling
Trial samples for mold and process validation
Mold making to production molding support
Custom molded covers, enclosures and shells for electronics, instruments and industrial assemblies.
Molded fastening details, internal supports, snap fits and locating structures.
Flexible molded parts for sealing, protection or soft-touch functional requirements.
Plastic parts coordinated with inserts, machining, finishing or assembly steps.
Part size, complexity, undercuts, cavity count, mold steel, surface texture and expected production volume all affect tooling cost.
Yes. DFM review can cover wall thickness, draft, ribs, bosses, gates, shrinkage and assembly risks before tooling.
Common thermoplastics, engineering plastics and silicone materials can be reviewed according to strength, heat, color and application needs.
Yes. Trial shots and sample validation can be arranged before batch production.
Insert molding or secondary assembly can be discussed when drawings and application requirements are provided.
Send 3D files, 2D drawings, material or performance target, quantity, color, texture and assembly requirements.
Simply upload your product blueprints. Our engineering division will analyze your files and provide a Free DFM report and pricing quote within 24 hours.