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Injection Molding Service in China

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Injection Molding Service

Custom injection molded parts made by Shunho plastic solutions for engineers for low volume runs and production.

Custom mold & plastic parts, Rapid tooling


Our injection molding capabilities

Our network of Manufacturing gives you easy access to diverse capabilities to serve all your manufacturing needs.

NameDescription
Rapid toolingMolds with aluminum inserts with a life time of up to 20,000 runs. Machined in typically 2-3 weeks.
Production toolingTraditional hard molds, machined in typically 4-5 weeks.
Single cavity moldsMolds containing only one cavity, producing one unit per run.
Molds with side-action coresCores slide out of the part from the side before it is ejected from the mold. This allows for undercuts to be molded.
Multi-cavity moldsMultiple identical cavities are machined into the mold tool. This allows for more parts to be produced per shot, minimizing the unit costs.
Family MoldsSeveral parts are designed into the same mold tool. This allows for the minimization of tooling costs.
Insert moldingInserts are placed into the mold and molding occurs around them. This allows for inserts such as helicoils to be molded in your design.
OvermoldingPremade parts are placed into the mold to mold over them. This allows for multi-material injection molding.


Our injection molding service

Our injection molding service can move from prototyping to end-part production.


NameDescription
Minimum order quantity100   runs
Mold materialTool   Steel P20, Carbon Steel S50C, Aluminum
Mold typesRapid   tooling, production tooling
Mold storageMinimum   2 years
Mold lead time2-3   weeks (Rapid tool), 4-5 weeks (Production tool)
Quality assuranceInspection   reports included, full dimensional report and material certifications   available upon request.
Design verification programSimilar   to First Article Inspection, you will receive 2 sets of parts upon the   machining of the mold to test fit before continuing with full production.
Mold remachiningWe   can remachine the molds should any changes be required, changes to be   reviewed on a case by case basis.
Additional technical supportDedicated   Shunho Plastic Solutions  Mechanical   Engineer for technical support.


Available materials for plastic injection molding

All thermoplastics can be injection molded. Some thermosets and liquid silicones are also compatible with the injection molding process.


ABS, Nylon (PA 6), PC/ABS, Polyurethane (PU), Acrylic (PMMA), Polypropylene (PP), Polystyrene (PS), Polycarbonate (PC), Polyvinyl chloride (PVC) and POM (Acetal/Delrin).


Available surface finishes for injection molding

Injection molded parts are not usually post-processed, but the mold itself can be finished to affect the surface finish of the molded part.

This way aesthetic needs or technical requirements can be achieved.


NameSPI StandardDescription
GlossyA-1,   A-2, A-3The   mold is smoothed and then polished with a diamond buff, resulting in parts   with a mirror-like finish.
Semi-glossB-1,   B-2, B-3The   mold is smoothed with fine grit sandpaper, resulting in parts with a fine   surface finish.
MatteC-1,   C-2, C-3The   mold is smoothed using fine stone powder, removing all machining marks.
Textured finishD-1,   D-2, D-3The   mold is first smoothed with fine stone powder and then sandblasted, resulting   in a textured surface.
As-machined finish
The   mold is finished to the machinist's discretion. Tool marks may be visible.



For a detailed description of the SPI standardstake a look here.



Contact Us

   (+86)-0769-88050188
  sales@shunhogroup.com.hk
  Room 806, Block A, worldecono
mic and trade center No. 11 Dong
guan Avenue, Dongcheng District , 
Dongguan, China

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