China Plastic Injection Molding Manufacturers Suppliers Factory - Customized Service

Your Professional Plastic Injection Molding Supplier

Our goal is to become your true partner in the field of 3D printing China. ShenZhen Strongd Model Technology Co.,Ltd. is a factory specializing in prototype fabrication, batch CNC machining&turning, injection molding,vacuum casting,and sheet metal bending. We have a skilled engineering team dedicated to refining every stage, from product development and process improvement to production oversight, ensuring every product delivered meets rigorous quality and performance standards. The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.

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Why Choose Us

Our certifications

Our products meet ISO9001 and IATF 16949 certifications.

Production equipment

We have advanced production equipment, including 80 CNC machines, 70 injection molding machines, 12 sheet metal bending machines, and 8 3D printers.

Product market

Our products are well-received and exported to countries and regions such as the United States, Switzerland, France, the United Kingdom, Australia, and Italy.

Our services

Our team of experts will recommend the most suitable products according to customer needs and provide detailed consultation, we ensure timely delivery and provide installation guidance, and we provide long-term service support.

Injection Molding Processing Plastic Parts

Advantages of Plastic Injection Molding

Ideal for mass production: Plastic product manufacturing injection molding cycle is short, the degree of automation is high, and single-mold multi-cavity parts can be produced simultaneously, which greatly improves the output per unit time and is an ideal choice for mass production.

High precision & consistency: The mold accuracy determines the product accuracy, which is suitable for product structures requiring multiple assembly parts.

Complex geometry capability: By rationally designing the mold, the overall forming of complex structures such as buckles, threads, ribs, and buckles can be achieved, reducing subsequent processing or assembly steps.

Specification of Plastic Injection Molding

Material Class	Example	Key Properties
Standard	ABS	Impact resistance
Engineering	PC/ABS	Heat deflection 120°C
High-Performance	PEEK	Continuous 250°C

Types of Plastic Injection Molding

Extrusion moulding

With extrusion moulding, hot melted plastic is pressed through a shaped hole to create a lengthy shaped plastic part. This customizable shape that the liquid plastic gets pressed through is called a die.

Compression moulding

This method involves the raw liquid plastic being poured into a heated mould and then being compressed together to form the desired shape. The high temperature of the entire process ensures good strength in the final product.

Blow moulding

With blow moulding, the custom plastic parts come out hollow and thin-walled. This method is ideal for when the plastic part has to have uniform wall thickness. This is very similar to the process of glass blowing.

Injection moulding

Injection moulding is fairly similar to extrusion moulding. The difference here is that with injection moulding the melted plastic is injected directly into a custom mould. The injection is under high pressure so that the mould is filled and a solid part is made.

Rotational moulding

Also sometimes called rotomoulding, this method involves the resin or liquid being placed inside the mould and then being rotated at high speeds.

Application of Plastic Injection Molding

Consumer electronics: Smartphone housings, earphone accessories, remote control buttons,

Connectors. It can provide: Smooth surface finish, wear resistance , anti-static properties

Automotive industry: Dashboards, headlight housings, center console trims, pipe fittings, which have the requirement on impact resistance, heat resistance, color consistency.

Medical device: Syringe barrels, catheter connectors, diagnostic equipment components, which have the requirement on medical-grade materials, non-toxic, odor-free, high cleanliness

Home appliances: Rice cooker housings, fan blades, washing machine buttons, refrigerator bins

Ordering Process of Plastic Injection Molding

Requirements consultation: Clients provide sketches or 3D design files. We assist in finalizing structural design, usage environment, color/appearance specifications, and material requirements.

Structural design & optimization: Our experienced engineering team conducts structural feasibility analysis and optimization, ensuring functional integrity, mold manufacturability, and injection molding efficiency.

Mold design & fabrication: Utilizing high-speed cnc machining, edm, wire cutting, and other advanced equipment to produce high-precision steel molds with a lifespan exceeding hundreds of thousands of cycles for long-term mass production.

Prototype sampling & approval: To samples are produced to verify dimensions, tolerances, structure, assembly, and appearance. Mass production commences upon client approval.

Mass production injection molding: Fully automated injection molding equipment ensures production efficiency and quality consistency

Surface treatment & assembly: We also provide complete assembly, testing, and packaging services.

Quality control & logistics: Implementing full-process quality control with pre-shipment inspections for dimensions, strength, and appearance. Supporting both domestic and international shipping solutions.

Packing and Shipping of Plastic Injection Molding

Packing	Single piece foam wrap + bubble bag
Shipping	Shipped by road, sea, rail

FAQ

Q: Do you accept small batch customization or proofing?

A: Yes. We can provide fast proofing service for new product development, with a minimum order of 1 set of molds and flexible arrangement for small batch production.

Q: What is the service life of the mold?

A: The service life of steel molds is generally more than 100,000 to 1 million times, which varies depending on the mold steel and maintenance conditions.

Q: Do you provide surface treatment?

A: Yes. We can provide painting, electroplating, UV, silk screen, pad printing, laser engraving, polishing and other processes to meet the appearance and functional requirements.

Q: What are the steps in plastic injection molding?

A: Understanding the five key steps of plastic injection moulding – clamping, injection, cooling, ejection, and inspection – is essential for anyone involved in designing, developing, or producing plastic parts.

Q: How thick can you injection mold plastic?

A: Wall thickness in injection molded parts generally ranges from 1 to 5 mm. The recommended thickness depends on the plastic material, the part's requirements, and factors such as mold flow.

As one of the leading plastic injection molding manufacturers and suppliers in China, we warmly welcome you to buy high-grade plastic injection molding made in China here from our factory. All customized products are with high quality and competitive price.

Injection Molding ABS, Plastic Injection Molded Parts, Plastic Product Manufacturing Injection Molding