Custom, precision plastic injection mold design and manufacturing services

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    With our custom plastic injection mold design and manufacturing services, Zeng Hsing offers a comprehensive solution—from technical drawings to finished products. Using state-of-the-art CNC machinery and strict tolerance control processes, we are committed to producing durable molds that perfectly meet even our customers’ most stringent technical standards.

What is a plastic injection mold, and why is precision mold manufacturing necessary?


A plastic injection mold is a system of metal components that are precisely assembled to shape plastic products through the injection molding process.

Injection mold

Investing in a high-quality mold manufacturing service offers many benefits:

   – High precision: Ensures minimal tolerances, ensuring that assembled parts fit together perfectly.

   – Optimized productivity: A well-designed mold structure helps reduce cycle time and increase hourly output.

   – Superior durability: The use of specialized mold steel ensures the mold can withstand millions of presses without deformation.

Common Types of Plastic Injection Molds We Offer


Depending on the product design and technical requirements, we recommend the most suitable mold types:

   – Two-plate molds: Simple design, low cost, suitable for general-purpose products.

   – 3-plate molds: Feature a separate automatic runner system, suitable for products requiring high aesthetic quality.

   – Slide molds (tilting pins): Specialized for products with complex shapes, including tabs, side holes, or undercuts.

   – Multi-cavity molds: Enable the mass production of large quantities in a short period of time.

Injection mold

>>>> Learn more: Injection mold suppliers in Vietnam offering factory-direct prices

Zeng Hsing’s Professional Plastic Injection Mold Manufacturing Process


To ensure that every mold we deliver meets our standards, we follow a rigorous 5-step quality control process:

Step 1: Concept Review and Technical Consultation

    We analyze customer requirements (2D/3D drawings or product samples) to recommend the most optimal plastic materials and mold steel.

Step 2: Mold Design Using CAD/CAM Software

    We use modern software to simulate plastic flow (Moldflow Analysis), helping to predict and eliminate defects such as air bubbles and sink marks right from the design stage.

Step 3: Precision Machining

    We use state-of-the-art CNC milling machines, EDM wire cutting machines, and surface grinding machines to machine mold components with micron-level precision.

Step 4: Assembly and Mold Testing (T1, T2)

    The mold is assembled and tested on an injection molding machine to verify the quality of the actual product. We will make adjustments until the product achieves the highest level of finish.

Step 5: Delivery and Maintenance

    After customer acceptance, the mold will be delivered along with operating instructions and a regular maintenance policy.

Injection mold

Reference Quote for Plastic Injection Mold Design and Manufacturing Services


The cost of manufacturing a plastic injection mold depends on the product’s complexity, the type of steel, and the number of cavities.

   – Simple molds: Starting from 20–50 million VND.

   – Medium-complexity molds: 50–150 million VND.

   – Complex/High-Tech Molds: Over 150 million VND.

Injection mold

>>>> Learn More: Custom ABS Plastic Injection Molding Services, High Precision, Factory Direct Pricing

Zeng Hsing – Your Strategic Partner in Precision Plastic Injection Mold Manufacturing


    In an industry where standards are becoming increasingly stringent, Zeng Hsing is proud to be a leading provider of comprehensive solutions, from design to the manufacturing of plastic injection molds. Guided by our motto, “Precision in Technology – Reliability in Service,” we have partnered with hundreds of businesses to bring high-quality plastic products to life.

Superior Production Capabilities

    Zeng Hsing operates a modern manufacturing facility equipped with state-of-the-art machinery from renowned brands such as Shibaura, Victor Taichung, and Chen Hsong. Our production capabilities meet a wide range of market demands:

   – Diverse Clamping Force Range: A fleet of 91 injection molding machines with capacities ranging from 50 tons to 650 tons.

   – Product dimensions: Capability to process plastic parts ranging in size from 5.0mm to 800mm.

   – Diverse materials: Specializing in engineering plastics such as ABS, POM, PP, PC, PMMA, PC/ABS, and various other specialty plastics upon request.

Professional Plastic Injection Mold Manufacturing Services

We focus on creating molds that offer high durability and exceptional aesthetics. Our core services include:

   – Custom Mold Design: Consulting on the optimal design of two-plate, three-plate, and slide (tilting) molds for complex parts.

   – Precision Machining: Utilizing modern CNC and EDM technologies to ensure the tightest tolerances, resulting in products with smooth, beautiful surfaces and precise technical specifications.

   – Integrated Manufacturing: Beyond mold making, Zeng Hsing also supports finished product injection molding and basic component assembly, helping customers save time and reduce logistics costs.

Injection mold

Quality Commitment and International Standards

Zeng Hsing’s reputation is built on the strict implementation of international-standard quality control systems:

   – Management Systems: Strict adherence to ISO 9001, ISO 14001, and ISO 45001 standards.

   – Output Control: Utilizing modern color measurement and spectroscopic equipment to ensure 100% consistency in color and technical specifications across all shipments.

   – Mold Durability: Committed to using high-quality mold steel, which extends mold lifespan and optimizes reinvestment costs for customers.

Multi-Industry Applications

Zeng Hsing’s products and molds are widely used in many essential sectors:

   – Home Appliances & Office Equipment: Plastic components for sewing machines, kitchenware, and office equipment.

   – Electronics & Technology: Enclosures, microchip components, and technical accessories.

   – Automotive & Medical Industries: Components requiring high thermal resistance and mechanical strength.

>>>> Learn More: High-Precision Plastic Injection Molding for Components and Technical Parts

    With extensive experience and state-of-the-art machinery, Zeng Hsing is committed to providing our customers with the most optimal plastic injection molding solutions in terms of both technical quality and cost. Don’t let your production process be disrupted by avoidable errors. Contact our team of engineers today for in-depth consultation and the most accurate quote for your project.


ZENG HSING VIET NAM

Address: Lot 28 VSIP II-A, Street 28, VSIP II-A Industrial Park, Vinh Tan Ward, Tan Uyen City, Binh Duong Province, Vietnam.

Phone: (+84) 0355 846 965 (Mr. Nghĩa) / (+84) 0362 476 478 (Mr. Nam)

Email: nghia_duong@zenghsing.com.vn / nam_vu@zenghsing.com.vn

Website: zenghsing.vn


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Contact us

Factory:
Zenghsing Industrial Co., Ltd
Address: No 28, 28 Road, VSIP II-A, Ho Chi Minh City, Viet Nam
Foremost Gulf International Vietnam Co., Ltd
Address: No 21, 6 Road, VSIP II, Ho Chi Minh City, Viet Nam

More From Us:
Zeng Hsing Industrial CO., LTD (Taiwan)
Foremost Gulf International Co., Ltd
Phone:  (+84) 0355 846 965 (Mr. Nghĩa)

             (+84) 0362 476 478 (Mr. Nam)

             (+84) 0366 983 816 (Mr. Khương)
Email:  nghia_duong@zenghsing.com.vn

            nam_vu@zenghsing.com.vn

            maiduy_khuong@zenghsing.com.vn

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