Injection Molding Services
We provide custom injection molding services for plastic parts after mold development and confirmation. The service covers sample production, low-volume production, and mass production, with attention to material selection, molding conditions, dimensional stability, and final inspection.
Service Overview
Injection Molding Services
Yinuomold provides custom injection molding services for B2B plastic part projects. Our injection molding service is suitable for sample production, low-volume production, and mass production after the mold has been developed and confirmed.
We work with customers who need custom plastic components for industrial products, consumer electronics, home appliances, automotive-related parts, and other plastic part applications.
Our Injection Molding Scope
Our injection molding service may include:
– Plastic material selection
– Mold trial and sample production
– Low-volume production
– Mass production
– Appearance and dimensional checking
– Basic assembly support
– Packaging support
Common Plastic Materials
We can work with common engineering and general-purpose plastics, depending on the part structure and application requirements.
Common materials may include:
– ABS
– PC
– POM
– Nylon
– PP
– PE
– PMMA
– TPU / TPE
The final material should be evaluated based on strength, appearance, temperature resistance, flexibility, cost, and product usage.
Typical Applications
Injection molded plastic parts can be used in many B2B product projects, including:
– Electronic housings
– Plastic covers
– Internal structural parts
– Brackets
– Buttons
– Connectors
– Appliance components
– Industrial plastic parts
– Automotive-related plastic components
Quality Control
For injection molding projects, we focus on stable production and basic quality control throughout the process. The inspection process may include material confirmation, first article inspection, dimensional checking, appearance inspection, production consistency checking, and final inspection before shipment.
Project Evaluation
Before production, we usually need drawings, samples, material requirements, estimated quantity, surface finish requirements, and any special assembly or packaging needs. These details help us evaluate the mold, material, production method, cost, and lead time more accurately.

Surface Treatments
Mold Texture
Mold texture can be applied to improve product appearance, surface touch, and functional requirements based on the part design.
Polishing
Polishing can be used when the molded part requires a smoother or cleaner surface finish.
Silk Screen Printing
Silk screen printing can be used for logos, symbols, marks, and simple surface graphics on plastic parts.
Pad Printing
Pad printing is suitable for adding marks, logos, or symbols on curved or irregular plastic surfaces.
Painting
Painting or spraying can be discussed when the product requires a specific color, appearance, or surface effect.
Quality Control
Material Confirmation
Material type and basic requirements are confirmed before production according to the project specification.
First Article Inspection
The first molded samples are checked before continuous production to confirm appearance, dimensions, and basic functionality.
Dimensional Inspection
Key dimensions are checked according to drawings, samples, or agreed project requirements.
Appearance Inspection
The surface is checked for visible defects such as flash, sink marks, color difference, deformation, or scratches.
Production Consistency Check
Batch consistency is monitored during production to reduce variation between samples and mass-produced parts.
Final Inspection Before Shipment
Finished parts are checked before shipment based on the confirmed quality requirements and order details.
Related Projects
ABS Injection Mold for Consumer Product Housing
ABS Injection Mold for Consumer Product Housing This project focused on the development of a custom ABS injection mold for a consumer product housing. The customer needed a plastic housing mold that could support sample confirmation and follow-up injection molding production. Project Background The housing part required both structural performance and appearance quality. It needed […]
Injection Molded Plastic Functional Part Project
Injection Molded Plastic Functional Part Project This project focused on a custom injection molded plastic functional part used in an assembly application. The customer needed a plastic component with stable dimensions, suitable material performance, and consistent production quality. Project Background The part was designed for functional use rather than simple appearance decoration. It needed to […]