Premium Custom Injection Molded Plastic Building Blocks OEM/ODM Injection Mold Toy Parts Manufacturer

Our building blocks are engineered using advanced injection molding technology with high-tonnage machines (80T–1200T), ensuring every brick meets strict dimensional tolerances (<0.02mm). This guarantees perfect clutch power—the satisfying "click" and secure hold that defines premium building toys. Whether you need standard compatible bricks, custom-shaped architectural pieces, or specialized mechanical gears, our in-house mold design team brings your vision to life.
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  • yixun

  • yixunmold

Our building blocks are engineered using advanced injection molding technology with high-tonnage machines (80T–1200T), ensuring every brick meets strict dimensional tolerances (<0.02mm). This guarantees perfect clutch power—the satisfying "click" and secure hold that defines premium building toys. Whether you need standard compatible bricks, custom-shaped architectural pieces, or specialized mechanical gears, our in-house mold design team brings your vision to life.
Why Choose Our Plastic Building Blocks?
  • Superior Clutch Power: Precision molds ensure tight, secure connections that stay built.

  • Vibrant, Fade-Resistant Colors: Masterbatch coloring integrated directly into the raw material for consistent, long-lasting hues.

  • Safety First: Made from 100% non-toxic, BPA-free virgin ABS, compliant with global safety standards.

  • Customization Flexibility: From custom logos and colors to unique part geometries and packaging.


 Key Features & Specifications

Feature Description
Material Virgin ABS (High impact strength, glossy finish) or Food-Grade PP (Flexible, eco-friendly).
Molding Process High-speed Injection Molding with automated robotic arm extraction for consistency.
Tolerance ±0.02mm – Ensures 100% compatibility with major global brands.
Surface Finish Smooth, burr-free surfaces; no sharp edges. Matte or Glossy finishes available.
Color Customization Pantone color matching available. No painting required (color-through material).
Logo Printing Silk-screen, pad printing, or laser engraving on brick surfaces.
Packaging Polybag, Color Box, Blister Card, or Custom Display Boxes. FBA-ready packaging available.
Applicable Age 3+ Years (Small parts warning applies for under 3s).

Customization Services (OEM/ODM)

We offer end-to-end solutions for creating your unique building block brand:

1. Custom Mold Design & Fabrication

Have a unique shape? Our engineering team uses CAD/CAE software to design precision molds.
  • Mold Life: Up to 500,000–1,000,000 shots depending on steel grade (S136, H13, etc.).

  • Prototype: Rapid 3D printing and T1 sample delivery within 7 days.

2. Private Labeling & Branding

  • Print your logo directly onto the bricks.

  • Custom color matching to align with your brand identity.

  • Exclusive packaging design support.

3. Set Assembly & Kitting

We don't just make parts; we assemble full sets.
  • Custom instruction manual design.

  • Sorting and bagging by assembly steps.

  • Drop-testing certified packaging for safe international shipping.


 Factory Strength & Quality Control

Located in Guangdong Province], China, our 12600 sqm facility is equipped with 30+ advanced injection molding machines.
  • Quality Assurance: 100% inspection during production. We utilize CMM (Coordinate Measuring Machine) for random sampling to verify dimensions.

  • Safety Compliance: All materials pass rigorous testing for heavy metals, phthalates, and small parts choking hazards.

    • Europe: EN71-1, 2, 3

    • USA: ASTM F963, CPSIA (CPC Certificate provided)

    • General: ISO9001:2015 Certified Management System

  • Production Capacity: 50+ tons of finished blocks per month.


Packaging & Shipping

  • Inner Packing: OPP bag, PE bag, or custom printed box.

  • Outer Packing: Export-standard 5-layer corrugated carton. Palletized for container loading.

  • Shipping Terms: FOB, CIF, EXW, DDP

  • Logistics Partners: DHL, FedEx, UPS, Sea Freight, Rail Freight (Europe/China-Europe Express).


Frequently Asked Questions (FAQ)

Q1: Are your blocks compatible with major brands like LEGO®?
A: Yes, our standard bricks are engineered to be fully compatible with major global brands while maintaining our own unique quality standards. Note: We do not sell counterfeit goods; we produce original designs or generic compatible parts.
Q2: What is the MOQ for custom colors or logos?
A: For standard shapes with custom colors/logos, the MOQ is typically 1000 sets. For completely new mold designs, the MOQ is negotiable based on the mold cost amortization.
Q3: Can you help with packaging design?
A: Yes, our in-house design team can assist with structural and graphic design for your retail packaging.

Premium Custom Injection Molded Plastic Building Blocks OEM/ODM Injection Mold Toy Parts Manufacturer

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Yixun is the China first generation mold maker, specialize in mold and moulding, provide one-stop plastic manufacturing service, feature in building medical and healthcare device tooling.
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  No.8, Lane 1, Xiju Road, Hengli Town, Dongguan City, Guangdong Province, China.
  +86-13829193570
  caobin@yixunmold.com
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