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Bost Custom Over Molding Solutions for Advanced Engineering Plastics
Bost Custom Over Molding Solutions
Why Choose Bost for Custom Over Molding
Bost is a professional, innovative and green high-tech manufacturer focused on custom over molding of engineering plastics. With award-winning expertise in polymer modification and product mold design, Bost transforms design concepts into reliable, production-ready parts that meet demanding performance and aesthetic requirements.
Advanced Materials & Special Properties
Bost specializes in specialty engineering plastics with exceptional properties — ultra-high anti-scar, super corrosion resistance, exceptional fatigue durability, ultra-abrasion resistance, high-temperature transparency, enhanced toughness, flame retardance, conductivity and thermal management. These materials are optimized for custom over molding to deliver durable bonds, precise tolerances and long service life in harsh environments.
Precision R&D and Manufacturing Capability
Our in-house R&D team and production engineers excel in plastics modification, mold design, mechanical processing and steel-plastic integration. Bost provides end-to-end services from material selection and sample prototyping to high-volume injection overmolding, ensuring consistent quality and fast time-to-market for customer-specific custom over molding projects.
Applications Across Industries
Bost’s custom over molding solutions serve automotive, industrial, electronics, renewable energy, medical devices and consumer goods sectors. Whether you need sound-dampening seals, protective overmolds for connectors, ergonomic grips or composite steel-plastic assemblies, our tailored materials and process control deliver superior performance.
Quality, Sustainability and Customer Support
Quality assurance, green manufacturing practices and responsive technical support are core to Bost’s promise. We combine rigorous testing, durable material formulations and efficient production to ensure customer satisfaction. Partner with Bost for custom over molding expertise that balances innovation, sustainability and scalable manufacturing.
custom over molding Display
What is the minimum order quantity (MOQ)? Do you support small-batch trial production?
The MOQ for standard products is ≥100kg. We support small-batch trial production (as low as 20kg) and provide mold testing reports and performance data feedback.
Can Bost customize modified plastics with special properties?
Yes! We offer modification services such as reinforcement, flame retardancy, conductivity, wear resistance, and UV resistance, for example:
• Adding carbon fiber to enhance stiffness
• Reducing the coefficient of friction through PTFE modification
• Customizing food-grade or medical-grade certified materials
What is the delivery lead time? Do you offer global logistics?
Standard products: 5–15 working days; custom modifications: 2–4 weeks. We support global air/sea freight and provide export customs clearance documents (including REACH/UL certifications).
How do I select the appropriate engineering plastic grade for my product?
Selection should be based on parameters such as load conditions (e.g., pressure/friction), temperature range, medium contact (e.g., oil/acid), and regulatory requirements (e.g., FDA/RoHS). Our engineers can provide free material selection consulting and sample testing.
What are the core advantages of Bost engineering plastics compared to ordinary plastics?
Bost engineering plastics feature ultra-high mechanical strength, high-temperature resistance (-50°C to 300°C), chemical corrosion resistance, and wear resistance. Compared to ordinary plastics, their service life is extended by 3 to 8 times, making them suitable for replacing metals in harsh environments.

Machined parts-CNC complex and precision plastic parts
Machined parts-CNC complex and precision plastic parts
Custom Larger and precision injection mould with high performance plastic
Custom Larger and precision injection mould with high performance plastic
Injection molding parts-Precision plastic parts custom
Injection molding parts-Precision plastic parts custom
BOST Injection molding -Customized and OEM Supplier
BOST Injection molding -Customized and OEM Supplier
Nylon Plastic Worm Gear custom for transmassion device
Nylon Plastic Worm Gear custom for transmassion device
Customized Plastic Injection molding -faster delivery and economical
Customized Plastic Injection molding -faster delivery and economical
Machined parts-CNC complex and precision plastic parts
Machined parts-CNC complex and precision plastic parts
Custom Larger and precision injection mould with high performance plastic
Custom Larger and precision injection mould with high performance plastic
Injection molding parts-Precision plastic parts custom
Injection molding parts-Precision plastic parts custom
BOST Injection molding -Customized and OEM Supplier
BOST Injection molding -Customized and OEM Supplier
Nylon Plastic Worm Gear custom for transmassion device
Nylon Plastic Worm Gear custom for transmassion device
Custom Overmolding mould-BOST rubber and plastic supplier
Custom Overmolding mould-BOST rubber and plastic supplier
Insert molding solutions for plastic mould manufacturer
Insert molding solutions for plastic mould manufacturerHow long can special engineering plastics remain durable and reliable in service? | Insights by Bost
How is sustainability addressed in the special engineering plastics sector? | Insights by Bost
What processing methods are suitable for special engineering plastics? | Insights by Bost
In which industries and applications are special engineering plastics most commonly used? | Insights by Bost
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