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 Simblong - Professional Plastic Injection Molding Manufacturer Since 2012
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An Integrated Manufacturing Partner Built for Flexibility and Scale
Since 2012, Simblong has supported established brands and emerging hardware innovators with product engineering, in-house mold manufacturing, injection molding, surface finishing, assembly, testing, and packaging validation.

Who We Are
From Product Engineering to Scalable Manufacturing.
Based in Dongguan, the famous precision mold city in China.Simblong has grown from an injection molding manufacturer into an integrated product engineering and manufacturing partner. Today, our approximately 500+ person team supports projects ranging from precision injection-molded parts and surface-finished components to subassemblies and fully assembled products.


Our flexible engagement model allows customers to work with us for an individual manufacturing process or a fully integrated program—from product engineering and mold development to scalable production.
Flexible Support. Integrated Capabilities.
Customers can engage Simblong for the specific support they need or combine multiple capabilities into one coordinated manufacturing program.
  Product Engineering & DFMA.
  Mold Design & Manufacturing.
  Injection Molding.
  Surface Finishing.
  Assembly & Testing.
  Packaging Engineering & Validation .
Industry Expertise
Deep Experience Where Product Quality and Appearance Matter
We bring deep manufacturing experience in beauty, hair care, and personal care products, where appearance, fit, finish, functionality, and production consistency are critical. Our capabilities also support smart home, medical, consumer electronics, and other innovative hardware applications.
  Hair Care & Styling 
  Beauty & Personal Care 
  Smart Home & Appliances 
  Medical & Healthcare 
  Consumer Electronics 
 Innovative Hardware 
Manufacturing Strength 
2012
Founded
18,000㎡
Manufacturing Facility
500+
Team Members
30+
Mold-Making & Maintenance Machines
80+
Injection Molding Machines
2+
Automated Spray Coating Lines
6+
Finished-Product Assembly Lines
800㎡
Class 100,000 Cleanroom
Mission, Vision & Values
Our Mission
To make product realization and manufacturing simpler.
Our Vision
To become the long-term trusted product realization and scalable manufacturing partner for global beauty, personal care, and innovative hardware brands.
Our Values
  Customer First — We start with customer needs and long-term value. 
  Craftsmanship — We pursue quality through attention to every detail. 
  Collaboration — We solve challenges through teamwork and shared ownership. 
  Continuous Improvement — We improve our processes, capabilities, and results every day.
Quality & certifications
Quality Built into Every Stage
Our documented quality systems, inspection controls, testing, and traceability practices support consistent manufacturing from product development through volume production.
Quality Management Approach
Quality Starts Before Production
Quality planning begins with engineering review, manufacturability assessment, material requirements, cosmetic standards, and critical-to-quality characteristics before tooling and production begin.

Quality Control Process
1
Requirement & Drawing Review
Requirement & Drawing Review
2
Incoming Material Inspection
Incoming Material Inspection
3
Mold Trial & First-Article Validation
Mold Trial & First-Article Validation
4
In-Process Quality Control
In-Process Quality Control
5
Appearance & Functional Testing
Appearance & Functional Testing
6
Final Inspection & Batch Traceability
Final Inspection & Batch Traceability
7
Packaging & Shipment Verification
Packaging & Shipment Verification
Inspection & Testing Capabilities
  Dimensional Inspection 
  Appearance Inspection 
  Color Difference Evaluation 
  Coating Adhesion Testing 
  Abrasion or Print Durability Testing 
 Salt Spray Testing
  Carton Drop Testing 
  Transportation Simulation Testing 
  Constant Temperature and Humidity Testing
  Steel Hardness Testing
  Raw Material Moisture Content Testing
  Halogen Testing
  Drop Weight Testing
  Cross-Cut Testing 
  Air Tightness Testing
  Dynamic Balance Testing
Cleanroom Capability
Controlled Production Environment
Our 800 m² Class 100,000 cleanroom provides a controlled production environment for applicable products and manufacturing processes.
Packaging & Transportation Validation
Protecting Products Through Delivery
Carton drop testing and transportation simulation help verify whether packaging can protect products from damage during handling, shipping, and final delivery.
Certified Management Systems & Quality Assurance
Our certified management systems, documented process controls and traceability practices support consistent product quality and reliable delivery from product development through volume production. Certification details are maintained according to the applicable site, scope and validity period. 
  Standard Name
  Certification Body
  Certificate Number
  Certified Scope
  Issue Date
  Expiry Date
  Applicable Site
  View / Download Certificate 
VIEW & DOWNLOAD CERTIFICATES
ISO 13485 — Medical Devices Quality Management System
ISO 13485 — Medical Devices Quality Management System
IATF 16949 — Automotive Quality Management System
IATF 16949 — Automotive Quality Management System
ISO 9001 — Quality Management System
ISO 9001 — Quality Management System
ISO 14001 — Environmental Management System
ISO 14001 — Environmental Management System
Corrective Action & Continuous Improvement
Continuous Improvement Beyond Inspection
When quality issues occur, our teams use documented root-cause analysis, corrective actions, verification, and process improvement to prevent recurrence.
Ready to Bring Your Product to Scale?

Whether you need a single manufacturing process or a fully integrated program, our engineering and manufacturing teams are ready to support your next project.
From Product Engineering to Scalable Manufacturing.
Since 2012, Simblong injection molding manufacturer has supported established brands and emerging hardware innovators with integrated product engineering and flexible manufacturing—from precision injection-molded and surface-finished components to subassemblies and fully assembled products.



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Add: No. 4, Wanan Road, Zhenan Industry Park, Changan Town, Dongguan City, Guangdong Province China
Contact Us
Contact person: Spencer Chen
Tel: +86-134 2864 0022
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