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 Simblong - Professional Plastic Injection Molding Manufacturer Since 2012
Assembly Services
We offer complete product assembly services,integrating plastic components, electronic parts
And hardware into finished products. With in-house engineering support, specialized joining
processes, and comprehensive testing capabilities, we deliver reliable, fully tested products ready for market
Engineering Support
Capability
Description
Mechanical Engineering In-house mechanical engineers for DFM/DFA analysis, structural optimization, and assembly interference verification.
Electronic Engineering In-house electronic R&D engineers for hardware design,circuit
Collaborative Development Integrated mechanical and electronic design to reduce cross-supplier coordination and accelerate time-to-market
Assembly Lines & Capacity
Details
Parameter
Assembly Lines 6 dedicated assembly lines
Line Type Manual & semi-automatic stations with anti-mistake design
Typical Products Air purifiers·Soap dispensers·Consumer electronics·Home appliances
Capacity Flexible to accommodate high-volume production and mixed-mode assembly
Specialized Joining Processes
1
Ultrasonic Welding
Hermetic sealing for water proof products(e.g.,soap dispensers);no adhesive required;clean and consistent weld.
2
Screw Fastening
Reliable mechanical joining for housings and internal components
3
Snap-Fit Assembly
Tool-free assembly for cost-effective production
New Product Introduction (NPl) Support
We support customers from prototype to mass production.
  Design Review -DFM (Design for Manufacturing) and DFA (Design for Assembly) analysis by mechanical and electronic engineers.
  Sample Build - Engineering samples for functional validation.
  Pilot Run-Small batch production to verify assembly process.
  Mass Production - Ramp-up to full volume with process control.
Supply Chain Integration
As a one-stop manufacturer,we manage the entire supply chain from raw material to finished Product.
1
In-House Components
Injection molding,spray painting,screen printing,laser engraving
2
Procurement
Sourcing of electronic components, PCBA, hardware, packaging materials
3
Inventory Management
Warehousing and just-in-time(JIT) delivery to assembly lines
Quality Control & Testing
1
Incoming Quality
100% inspection of critical components, IQC for purchased parts.

2
In-Process Quality
Station-by-station inspection,anti-mistake devices,visual checks.

3
Functional Testing

100% functional testing for finished products(power-on, performance validation)

4
Aging Test
Leak test for ultrasonically welded components(if applicable)

5
Outgoing Quality
Final inspection before packing,AQL sampling per customer requirements.
6
Drop Test
All the packing need to pass the drop test.

Project Examples
  Air Purifiers: Full assembly including housing,HEPA filter installation,fan motor control board,aging testing,and final inspection


  Soap Dispensers: Assembly of plastic housing, pump mechanism, sensor module, battery compartment, ultrasonic welding for waterproof sealing, and functional calibration
Find Your Assembly Solution
Contact us to discuss your product assembly requirements.Whether you need full product assembly or sub-assembly services,we provide end-to-end manufacturing support with integrated engineering expertise.
Get in touch with us
Just leave your email or phone number in the contact form so we can send you a free quote for our wide range of designs!
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
Copyright © 2026 Simblong -www.simblong.com | Sitemap
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