Plastic Engine Cover Injection Molding

Custom Molded Plastic Knobs OEM Service

If customers provide drawings or samples, we can produce molds and deliver custom molded knobs exactly matching their specifications.

Our custom molded knobs are widely used in:

The combination of PA material + brass insert ensures reliable performance in both high-cycle and high-load environments.

Benma specializes in end-to-end plastic product manufacturing, providing complete OEM/ODM services to global clients. With more than a decade of production experience, we offer:

Our facility holds ISO9001 and SMETA certifications, ensuring consistent quality, traceability, and compliance for international customers.

1. In-House Mold Manufacturing
Our tooling team designs and builds molds with optimized cooling, runner systems, and tolerance control to ensure stable part quality across high-volume production.
2. Expertise in Engineering Plastics
We mold PA, ABS, PC, PP, POM, TPE, TPU, and reinforced materials, offering solutions for impact resistance, heat resistance, and structural strength.
3. Professional Insert-Molding Technology
Brass inserts are positioned precisely using semi-automatic or fully automatic loading fixtures to ensure consistent bonding strength and alignment.
4. Strict Quality Assurance
Each production batch is inspected for dimensional accuracy, mechanical performance, insert bonding strength, and surface quality.
5. Scalable OEM Production
From low-volume pilot runs to mass production orders, we adapt production plans to meet your project schedule and cost targets.
6. Global Supply Chain Experience
We support clients from North America, Europe, and Southeast Asia with stable production, reliable lead times, and professional export logistics.

Step 1: Send Requirements
Provide drawings, samples, or design ideas.
Step 2: DFM & Quotation
Our engineering team reviews manufacturability and provides mold + production cost estimates.
Step 3: Mold Fabrication
We design and build molds according to your specifications.
Step 4: Sample Approval
We produce T0/T1 samples for your evaluation.
Step 5: Mass Production
Once samples are approved, we start stable batch manufacturing with full quality control.
Step 6: Delivery & Support
We pack and ship globally and provide continuous after-sales support.

BMA

Founded in 1997, our factory spans nearly 6,000 ㎡ in Ningbo, very convenient access to Shanghai and Hangzhou. With advanced workshops, modern production lines, ISO 9001 and SMETA certifications, and multiple patents, we ensure strong monthly capacity, reliable quality, high efficiency, and punctual delivery to clients worldwide.

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Processing Workshop

Material

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Hardware

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Assembly

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A well-organized workshop layout enables more controlled workflows and smoother production operations.

Our plant features high-tech machines that enable accurate, efficient, and stable manufacturing.