How to Choose a Chinese Injection Molding Factory

Table of Contents

I. Why Choose Chinese Mold Manufacturers

1. Supply Chain Maturity

· Production Capacity: China accounts for over 40% of the world's total mold production (data from 2024). The Yangtze River Delta (including Taizhou in Zhejiang and Shanghai) and the Pearl River Delta (including Dongguan and Shenzhen) have formed the world's most complete mold industry chain clusters.

· Specialized Division of Labor: For example, Shenzhen in Guangdong specializes in precision electronic molds, while Huangyan in Zhejiang focuses on daily necessities. They offer one - stop services from mold design, mold manufacturing to injection molding production, shortening the delivery cycle.

2. Price Competitiveness

· Mold quotations in China are 30 - 50% lower than those in Europe and the United States, and the cost advantage is more significant for small and medium - sized molds (less than 5 tons).

3. Delivery Speed Advantage

· The delivery cycle of standardized molds can be compressed to 30 - 45 days (the average in Europe and the United States is 60 - 90 days), which can quickly respond to market iteration needs.

4. Improvement in Precision Manufacturing Level

· Leading enterprises have a CNC machining accuracy of ≤ 0.02mm and are generally equipped with intelligent equipment such as coordinate measuring machines.

Mold assembly workshop

II. Confirm Your Requirements

1. Product Materials

· Specify the type of plastic for the product (such as ABS/PP) and special performance requirements (such as food - grade or weather resistance).

2. Product Specifications

· Provide 3D drawings (in STEP/IGS/X - T formats) with key dimensions, tolerances, and draft angles clearly marked.

3. Product Production Volume

· Estimate the total production volume, which determines the number of mold cavities and the selection of steel materials.

4. Surface Treatment

· Indicate the texture grade (such as VDI18 mirror finish) or special processes (such as chrome plating for corrosion resistance).

Multi-cavity mold

Single-cavity mold

III. Criteria for Selecting Suppliers

1. Basic Qualification Verification

Legal Compliance

· Required: Import and export operation rights (mandatory requirement of the Chinese Customs).

· Certifications: Valid ISO 9001 certification (automotive part suppliers need IATF 16949).

· Quality Assurance: Check the steel material quality guarantee certificate (for example, H13 steel should be accompanied by a heat treatment report).

ISO 9001

IATF 16949

Equipment Strength

2. In - depth Audit of Technical Capabilities

Design Team Experience

· Team Size and Experience: A design team of more than 10 people with over 5 years of experience in developing complex structures (such as automotive two - color molds and medical micro - hole parts).

· Analysis Report: Provide a mold flow analysis report to verify the rationality of the gate and cooling system design.

Process Control Capability

· Surface Treatment: High - gloss surface treatment with mirror polishing up to #12000 mesh (Ra ≤ 0.05μm).

· Lifetime Assurance: H13 steel molds should be nitrided (surface hardness ≥ HRC48).

Mass - production Stability Cases

· Request mass - production data of similar products (such as no major repairs after more than 500,000 mold cycles).

3. Delivery Document List

Mold flow analysis

4. Industry Compatibility Matching

IV. Major Supplier Regions

1. Comparison of Core Industrial Positions

2. Analysis of Advantages and Disadvantages

Advantages of Shenzhen

· Technological Leadership: Leading enterprises are equipped with in - mold sensors and hot runner systems, suitable for parts with a tolerance of ± 0.01mm such as automotive connectors. The CNC machining accuracy is generally ≤ 0.02mm, and coordinate measuring machines are used to ensure tolerance control. The multi - color injection molding technology is mature, meeting the aseptic molding requirements of medical devices.

· Cross - border Support: The bonded area logistics covers Hong Kong for transit, and the import tariff of old molds is optimized by 10 - 15%.

Disadvantages of Shenzhen

· Price Sensitivity: The price of the same precision molds is more than 30% higher than that in Taizhou.

Advantages of Taizhou

· Cost - efficiency: Mold quotations are more than 20% lower than those in Shenzhen, especially suitable for small and medium - sized molds with a service life of up to 500,000 cycles. The Huangyan industrial cluster offers one - stop services from "design - trial molding - mass production" with a delivery cycle of ≤ 25 days.

· Specialization in Traditional Fields: Pipe fitting molds (drainage/electrical casings) account for 60% of the national market share. Daily necessities molds (such as folding tables and chairs, trash cans) are also well - developed.

Disadvantages of Taizhou

· Innovation Lag: It mainly relies on standardized design and has weak ability in developing complex structures.

· Equipment Limitation: The popularity rate of CNC machining centers is about 50%, while it is over 80% in Shenzhen.

· Mold Precision: The mold precision is not high.

3. Representative Enterprises and Suitable Products

new energy charger shells

pipe connectors

V. Call to Action: Seize the Opportunities of Chinese Manufacturing

Choosing Chinese molds means choosing the core competitiveness of the global supply chain!

· New Product Development: Prioritize suppliers in Dongguan or Shenzhen and require T0 sample verification.

· Large - scale Orders: Select enterprises with IATF 16949 certification (such as ZhongSheng Precision Mold Factory) to ensure consistency. With a 30 - 50% cost advantage, 20 - 30 days of rapid delivery, and a process with a service life of millions of mold cycles, the Chinese mold industry cluster is redefining global manufacturing standards. Act now to seize the opportunity! Alpinemold, with 33 years of Chinese technology, can meet your needs. We offer a one - stop solution from mold design to the final product. To date, we have successfully completed over 10,000 mold projects.