Ningbo (P&M) Plastic Metal Products Co., Ltd. has 17 years of mold manufacturing technology and can customize high quality mold custom plastic parts. We provide professional customized high quality mold custom plastic parts services, and we are a professional high quality mold custom plastic parts manufacturer. We have sufficient experience in selecting product raw materials and mold materials. In the process of customizing high quality mold custom plastic parts, our factory can provide one-stop service. We have design and production capabilities related to high quality mold custom plastic parts, such as: CAD design, mold manufacturing, injection molding, plastic product production, assembly and other technologies.
In addition, our company has established cooperative relationships with plastic raw material suppliers, printing manufacturers, etc. to ensure the supply of raw materials and printing quality. Through our rich experience and perfect supply chain, our company can provide customers with high-quality customized high quality mold custom plastic parts products to meet their specific needs. At the same time, we have 10 years of professional foreign trade service experience, understand the foreign trade process, and better serve our customers. For high quality mold custom plastic parts products, we can make corresponding plastic parts, which is mainly done through injection molds.


Pillar One: Outstanding Design and Engineering (from the source)
This is the first line of defense for high quality, aiming to "get it right the first time".
Deep DFM (Design for Manufacturability Analysis)
Core: Mold engineers must get involved early in the product design stage.
Action: Systematically analyze the 3D data of the product, including the uniformity of wall thickness, draft Angle, reinforcing rib design, and fillet transition, and provide professional modification suggestions to prevent inherent defects such as shrinkage, warping, and stress concentration from the source.
Output: A detailed DFM report confirmed by the client, locking in the final design.
Scientific mode flow analysis
Core: This is the non-negotiation stage of modern precision molds.
Action: Use CAE software such as Moldflow to simulate the entire process of plastic filling, pressure holding, and cooling on a computer.
Value: Anticipate and optimize issues such as the position of weld lines, cavitation, and uneven shrinkage in advance; Scientifically design the gating system and cooling waterways; Predict potential warpage trends. This can reduce the number of mold trial adjustments and costs by more than 50%.
Precise materials science
Action: Based on the final usage environment of the parts (mechanical, thermal, chemical, appearance), scientifically recommend materials rather than guess based on experience. Provide complete material physical property tables and certification documents.
Pillar Two: Precision Molds (A workman who wants to do his job well must first sharpen his tools)
Molds are the "genes" of parts, directly determining the precision, appearance and consistency of the parts.
High-standard mold design and steel materials
Design: It adopts a balanced hot runner system (needle valve type is recommended), efficient conformal cooling water channels, adequate exhaust and reliable slider/inclined top mechanism.
Materials: According to the production volume and parts requirements, high-quality die steel with high hardness and high polishing property (such as S136, 718, H13, etc.) is selected and appropriate heat treatment is carried out to ensure the service life of the die.
Micron-level processing and assembly
Processing: High-precision CNC, mirror electrical discharge machining, slow wire electrical discharge machining and other equipment are adopted to ensure that the processing accuracy of key parts reaches ±0.005mm or even higher.
Assembly: Experienced master fitters perform "mold matching" to ensure that the parting surfaces fit tightly, the moving mechanisms are smooth, and there is no leakage in the cooling waterways.
Ultimate surface treatment
Polishing: The cavity of the appearance part must reach the specified polishing grade.
Etching: The texture processing should be uniform, clear and in line with the design intent.
Pillar Three: Optimized Processes (Transforming Potential into Reality)
An excellent mold needs to match the precise "cooking heat".
Scientific trial mold and parameter locking
Action: The purpose of mold testing is not only to produce samples, but also to systematically explore the optimal combination window of parameters such as temperature, pressure, speed, and time through the DOE experimental design method.
Output: A detailed and repeatable standard process parameter table, rather than "empirical values" based on intuition.
Material handling and process monitoring
Drying: Strictly follow the material drying specifications (for example, dry ABS at 80-85℃ for 3-4 hours), which is the basis for avoiding silver streaks and bubbles.
Stability: Use stable injection molding machines and monitor the fluctuations of key process parameters.
Pillar Four: Strict Process Control (Ensuring consistency with data)
Make sure that the first and the one millionth product are equally perfect.
First article Inspection and Statistical Process control
FAI: After each shift or mold change, conduct full-size measurement of the first product.
SPC: In production, key dimensions are sampled and measured, and control charts are drawn. The aim is not to detect defective products, but to warn of abnormal trends in the production process and achieve preventive control.
Automation and Traceability
Automation: Use mechanical arms to pick up items, reducing human intervention and contamination.
Traceability: Establish a batch management system to ensure that any part can be traced back to the production time, machine, mold, raw material batch and process parameters.
Complete quality documents
From the DFM report, mold flow analysis report, trial mold report to the shipment inspection report, a complete quality file is formed. This is a demonstration of professionalism and also the foundation for subsequent problem analysis.
We are a high quality mold custom plastic parts manufacturer, providing high-quality high quality mold custom plastic parts manufacturing. As long as you want to customize/develop high quality mold custom plastic parts products, you can find us. We have professional injection mold design and mature manufacturing technology, providing you with one-stop service, from product design-mold making-product production-product packaging-product transportation, we can help you in every link. As long as you come to us, we will provide you with the ultimate service and satisfy you in terms of product quality, production time, information dialogue, etc.
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Product Name |
Treadmill moulding |
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Pls provide |
2D, 3D, samples, or the size of the multi-angle pictures |
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Mould Time |
20-35 Days |
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Product time |
7-15 Days |
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Mould precision |
+/-0.01mm |
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Mould life |
50-100 million shots |
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Producing Process |
Audit drawings - mold flow analysis - design validation - Custom Materials - mold processing - core processing - electrode machining - Runner system processing - parts processing and procurement - machining acceptance - cavity surface treatment process - complex mode Die - The entire mold surface coating - Mounting plate - mold sample - sample test - sending samples |
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Mould cavity |
One cavity, multi-cavity or same different products be made together |
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Mould material |
P20,2738,2344,718,S136,8407,NAK80,SKD61,H13 |
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Runner system |
Hot runner and cold runner |
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Base material |
P20,2738,2344,718,S136,8407,NAK80,SKD61,H13 |
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Finish |
Pitting the word, mirror finish, matte surface, striae |
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Standard |
HASCO, DME or dependent upon |
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Main technology |
Milling, grinding, CNC, EDM, wire cutting, carving, EDM, lathes, surface Finish, etc. |
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Software |
CAD,PRO-E,UG Design Time: 1-3 days (normal circumstances) |
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Product material |
ABS,PP,PC,PA6,PA66,TPU,POM,PBT,PVC,HIPS,PMMA,TPE,PC/ABS,TPV,TPO,TPR,EVA,HDPE,LDPE,CPVC,PVDF,PPSU.PPS. |
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Quality system |
ISO9001:2008 |
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Establish time |
20days |
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Equipment |
CNC,EDM,Cutting off Machine,plastic machinery,etc plastic suitcase mould zhe jiang |




We are Custom Plastic Mold factory. Our factory is plastic injection mold maker. we has 17 years of experience in professional custom plastic mold and 10 years of foreign trade experience. We are custom Plastic Mold supplier. We can provide custom Plastic Mold service. Our factory can make the Injection molded plastic parts, and the quality of the products will satisfy you.
We have more than 50 high-end machines and hundreds of engineers and designers. We can provide one-stop service, from product design - mold making - product production - product packaging - transportation. We have a complete production chain. We can meet all your requirements.
Professional custom mold service, Plastic mold design and manufacturing .plastic product production, product design, mold design, blow mold customization, rotational mold customization, die-casting mold customization. 3D printing services, CNC manufacturing services, product packaging, customized packaging, shipping services.









We always adhere to the principles of quality first and time first. While providing customers with the highest quality products, try to maximize the production efficiency and shorten production time. We are proud to tell every customer that our company has not lost any customer since its establishment.If there is a problem with the product, we will seek a solution actively and take responsibility to the end.
Q1: Are you trading company or manufacturer ?
A: We are manufacturers.
Q2. When can I get the quotation?
A: We usually quote within 2 days after we get your inquiry.
If you are very urgent, please call us or tell us in your email so that we can quote for you first.
Q3. How long is the lead-time for mold?
A: It all depends on the products' size and complexity. Normally, the lead time is 25 days.
Q4. I have no 3D drawing, how should I start the new project?
A: You can supply us a molding sample, we will help you finish the 3D drawing design.
Q5. Before shipment, how to make sure the products quality?
A: If you don't come to our factory and also don't have the third party for inspection, we will be as your inspection worker.
We will supply you a video for production process detail include process report, products size structure and surface detail, packing detail and so on.
Q6. What is your payment terms?
A: Mold Payment: 40% deposit by T/T in advance, 30% second mold payment before sending out the first trial samples, 30% mold balance after you agree the final samples.
B:Production Payment: 50% deposit in advance, 50% before sending out the final goods.
Q7: How do you make our business long-term and good relationship?
A:1. We keep good quality and competitive price to ensure our customers benefit for best quality products.
2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.