Ningbo (P&M) Plastic Hardware Products Co. has 15 years of mold making technology for injection molding. We have ISO 9001 certificates. We provide professional injection molding service and we are professional injection molding manufacturer. We have sufficient experience in product raw material selection and mold material selection. We are well aware of the properties of various materials and the advantages and disadvantages of mold design. We will recommend suitable materials and professional design advice for our clients.
As a seasoned service provider specializing in precision injection molding, we are committed to delivering cost-effective custom plastic component injection molding services to clients across industries worldwide, while complementing these with professional component assembly solutions. With years of technical expertise honed in the injection molding process, precise control over material properties, and a customer-centric customization philosophy, we accurately cater to the complex production needs of sectors such as automotive, electronics, medical, home appliances, and industrial equipment. From product structural design optimization and material selection recommendations to mass injection molding production and subsequent assembly, we build a full-process, efficient, and collaborative service system for clients, empowering them to enhance their product competitiveness in the market..



In the injection molding industry, customization capability stands as the core criterion for measuring a service provider’s strength. Our key advantage lies in our ability to deliver full-dimensional customization services—from product structure decomposition to precise material adaptation—based on clients’ specific application scenarios and performance requirements. We deeply understand the structural differences of products across various industries. Whether it is electronic components with complex inner cavities and precision buckle structures, industrial machinery plastic parts that need to withstand high-strength loads, or home appliance exterior parts demanding extremely high surface finish, we ensure that the injection-molded plastic components perfectly align with client needs through professional structural analysis and process design.
For the structural design and optimization of customized products, we have established a mature service process. In the early stages of a project, our senior structural engineers conduct in-depth communication with clients to comprehensively sort out core parameters such as the product’s operating environment, stress conditions, and assembly requirements. Integrating the characteristics of the injection molding process, we provide professional structural optimization suggestions. For instance, for spliced plastic components requiring tight assembly, we precisely design fitting clearances and positioning structures. By reasonably setting draft angles and avoiding undercut structures, we not only ensure the assembly accuracy of the product but also improve production efficiency. For plastic components of hydraulic systems with complex internal runners, we utilize simulation technology to optimize the runner structure, ensuring uniform melt filling during injection molding and preventing defects such as bubbles and sink marks. Additionally, we support customized development of various structural modules of the product, including main structures, connection structures, reinforcing rib structures, and sealing structures. Whether it is a complex structural part formed in one piece or a multi-module part requiring subsequent assembly, we can provide tailored injection molding solutions.
Precise material selection is the foundation for ensuring the performance of injection-molded products. Leveraging our in-depth understanding of the properties of various plastic materials, we provide clients with cost-effective material selection recommendations. Currently, the plastic materials we can adapt to cover general-purpose plastics, engineering plastics, special engineering plastics, and other categories, capable of meeting the performance requirements of different products.
In terms of general-purpose plastics, we frequently use materials such as polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), and polystyrene (PS). These materials boast advantages such as low cost, good moldability, and high production capacity, making them suitable for products with relatively low performance requirements, such as daily necessities, packaging components, and simple home appliance casings. For example, polypropylene (PP) is often used to manufacture food-contact plastic components due to its excellent chemical resistance and heat resistance. Polyethylene (PE), with its good toughness and impact resistance, is an ideal choice for manufacturing packaging containers and daily-use plastic parts. Polyvinyl chloride (PVC) has excellent chemical stability and flame retardancy, and is widely used in the production of pipe fittings and decorative plastic parts. Polystyrene (PS) has good transparency and moldability, and is suitable for manufacturing plastic toys and packaging trays.
For engineering plastics, which are widely used in high-performance scenarios, we have rich application experience with materials including acrylonitrile-butadiene-styrene (ABS), polycarbonate (PC), nylon (PA), and polyoxymethylene (POM). These materials exhibit superior mechanical properties, heat resistance, and chemical stability compared to general-purpose plastics, making them suitable for manufacturing core components in automotive, electronics, and industrial equipment industries. ABS plastic, with its excellent impact resistance and surface gloss, is a preferred material for manufacturing automotive interior parts and electronic product casings. Polycarbonate (PC) has outstanding impact resistance and high-temperature resistance, and is widely used in the production of electronic product shells and medical device components that require high transparency and strength. Nylon (PA), known for its excellent wear resistance and mechanical strength, is ideal for manufacturing gears, bearings, and other transmission components in industrial equipment. Polyoxymethylene (POM), with its good fatigue resistance and dimensional stability, is often used to produce precision mechanical parts such as fasteners and sliding components.
For special engineering plastics that need to withstand extreme environments, we also provide professional adaptation services, covering materials such as polytetrafluoroethylene (PTFE), polyetheretherketone (PEEK), and polysulfone (PSU). These materials possess exceptional high-temperature resistance, corrosion resistance, and mechanical properties, making them suitable for key components in aerospace, medical, and high-end industrial fields. For example, polytetrafluoroethylene (PTFE) has excellent high-temperature resistance and chemical inertness, and is used in the production of sealing components in high-temperature and corrosive environments. Polyetheretherketone (PEEK) can maintain stable performance at high temperatures up to 260°C and has good biocompatibility, making it an important material for manufacturing medical implant components and aerospace parts. Polysulfone (PSU) has excellent transparency and high-temperature resistance, and is suitable for manufacturing high-precision electronic components and medical equipment shells.
Our professional injection molding process system is the key to ensuring product quality and production efficiency. We adhere to strict process standards and implement full-process quality control from mold design and manufacturing to finished product inspection. First, in the mold design stage, we use advanced 3D modeling and simulation software to conduct mold flow analysis, predicting potential problems such as melt filling, cooling, and warpage during the injection molding process. This allows us to optimize the mold structure in advance, including runner design, gate position, and cooling system layout, ensuring the rationality of the mold and laying a solid foundation for subsequent production. Our mold manufacturing team is composed of experienced technicians who use high-precision processing equipment to process mold cores, cavities, and other key components, ensuring that the mold precision meets the requirements of customized products. Generally, the mold precision we can achieve reaches ±0.01mm, which can fully meet the production needs of precision plastic components.
In the injection molding production stage, we are equipped with a full range of injection molding equipment with clamping forces ranging from 50 tons to 1000 tons, which can meet the production needs of plastic components of different sizes and weights. All injection molding machines are equipped with advanced intelligent control systems, which can accurately control key process parameters such as injection speed, injection pressure, holding pressure, and cooling time. During the production process, our technicians conduct real-time monitoring of these parameters to ensure the stability of product quality. For example, when producing thin-walled plastic components, we will increase the injection speed appropriately to ensure that the melt can fill the mold cavity quickly; when producing thick-walled components, we will optimize the holding pressure and cooling time to avoid defects such as sink marks and shrinkage. At the same time, we implement a strict raw material management system. Before production, all raw materials will undergo strict inspection, including material composition, moisture content, and melt flow rate, to ensure that the raw materials meet the production requirements. For materials that are prone to moisture absorption, such as nylon (PA) and polycarbonate (PC), we will conduct pre-drying treatment to prevent defects such as bubbles in the injection-molded products.
In addition to injection molding production, we also provide professional component assembly services to meet clients’ one-stop production needs. Our assembly workshop is equipped with specialized assembly equipment and testing tools, and has established a standardized assembly process. According to the assembly requirements of different products, we can provide services such as screw locking, snap fitting, adhesive bonding, and terminal crimping. During the assembly process, we implement strict process inspection to ensure that the assembly accuracy and product performance meet the client’s requirements. For example, when assembling electronic product components, we use anti-static operating tools and environments to avoid damage to sensitive electronic components; when assembling mechanical components, we use precision testing instruments to detect assembly gaps and rotational flexibility, ensuring the reliability of the assembled components. It is important to emphasize that we focus on providing high-quality plastic components and supporting assembly services, rather than finished product manufacturing. This positioning allows us to concentrate our technical resources on improving the precision and performance of plastic components, better meeting the professional needs of clients in different industries.
Quality control is an integral part of our service system. We have established a complete quality management system that covers the entire process from raw material incoming inspection, in-process inspection to finished product outgoing inspection. We are equipped with advanced testing equipment, including a coordinate measuring machine (CMM) for detecting product dimensions, a tensile testing machine for testing material mechanical properties, a melt flow rate tester for testing material processing properties, and a surface roughness tester for detecting product surface quality. During the production process, our quality inspectors conduct random inspections and full inspections of products according to the sampling plan to ensure that each batch of products meets the quality standards. For non-conforming products, we implement a strict traceability system to analyze the causes and take corrective and preventive measures to avoid similar problems from recurring.
We also pay attention to the sustainability of production and actively promote green injection molding processes. We optimize the production process to reduce energy consumption and material waste; at the same time, we actively use recyclable plastic materials and promote the recycling and reuse of production waste. We have passed ISO9001 quality management system certification and ISO14001 environmental management system certification, demonstrating our commitment to quality and environmental protection.
With years of experience in the injection molding industry, we have served hundreds of clients in various industries and accumulated rich cases and technical experience. Whether it is a small-batch prototype trial production or large-scale mass production, we can provide flexible and efficient solutions. Our professional technical team and customer service team provide 24/7 technical support and after-sales service, timely solving problems encountered by clients in the cooperation process.
If you are looking for a reliable injection molding service provider that focuses on custom plastic components and supporting assembly services, we are your ideal choice. Contact us today to share your product requirements, and our professional team will provide you with a customized solution and quotation. Let us work together to create high-quality plastic components and enhance your product competitiveness in the market.

We are plastic mold maker and can provide custom mold service, we can make injection molds, blow molds, rotational molds and die-casting molds.
For custom injection molds, we can provide professional custom injection molding services. Usually Plastic injection mold manufacturing Molding are manufactured using injection molding technology. The mold materials for injection molds can be chosen from P20, 718, S136, H13 and so on. The mold material reflects the mold life and product material requirements.
For parts that require blow molding production, we can also provide professional custom blow molding services.
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Product Name |
Injection molding services
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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 |
Plastic injection mold manufacturing Injection Mould making
1.We communicate product design according to samples/drawings and your requirements.
2.After the product design is confirmed, we carry out the mold design, we provide all kinds of injection molds, blow molds, silicone molds, die-casting molds services.
3.Material procurement, steel cutting and mold basic tools.
4.Mold assembly
5.Mold inspection, tracking and controlling mold processing.
6. We will inform you the date of mold trial and send you the sample inspection report and injection parameters together with the sample.
7.Your instruction and confirmation of shipment.
8.Prepare the mold before packing.

Plastic injection mold manufacturing molding Specification
1. Professional manufacturer, design, production injection mould and stamping mould quality control
2. rich export experience plastic injection mould and stamping mould
3. Reasonable price of design mould
4. Cavities: single or as per your requirements cavity
5. Treatment: S45C Pretreat>25Hrc,And Nitriding
6. Mould Steel: Cavity ,Core and slide: P20 ,2738,2136 available Moldbase :LKM available
7. Standard:DEM ,HUSKY,available
8. Hot runner: according to your demand
9. Life time: >300 Thousand Times
10. Package: Plywood case, anti-rust paint
Mold design:
Information you need to provide us
1. If you have drawings, 2D drawings, 3D drawings (preferably in STEP format).
2. If there are no drawings, you need to provide specific length, width, height and weight information. (It’s best to send us samples)
3. Should the mold be sent to your country, or leave the mold in our factory and we will help you produce the product.
4. Mold material requirements, cavity number requirements (you can tell us about the size of your injection molding machine)
5. Product material requirements and product quantity. (You can tell us about the use of the product and we can give you suggestions)

Mold testing:
Once the mold is complete, I do a mold test. It usually takes about 3-5 days to complete. We need to assemble the mold, adjust the pressure data of the machine, and try production. We need to check whether there are problems during the normal production of the mold and make modifications.

Packaging according to your needs
1.By air ,it takes 3-7 days for delivery .The goods can be shipped by DHL ,Fedex ,UPS .
2.By sea ,the delivery time is based on your port .
To South East Asian Countries takes about 5-12 days
To Middle east countries takes about 18-25 days
To European countries takes about 20-28 days
To American countries takes about 28-35 days
To Australia takes about 10-15 days
To African countries takes about 30-35 days.

Video-1: (Factory Video)
Video-2: (Injection Molding)
Video-3: (Blow molding)
Video-4: (Blow molding)
Video-5: (Roll molding)







Customer satisfaction is our most important goal. We focus on communication and cooperation with our customers, always pay attention to their needs and provide quick response and quality customer service. Our injection production mold factory is committed to establishing long-term relationships and ensuring that our customers receive the best after-sales service during the purchase and use of our products, and we will definitely do our best to solve any problems for our customers.
1. Who are we?
We are based in Zhejiang, China, start from 2014,sell to North America(30.00%),Southern Europe(10.00%),Northern.
Europe(10.00%),Central America(10.00%),Western Europe(10.00%),Mid East(10.00%),Eastern Europe(10.00%),South America(10.00%). There are total about 51-100 people in our office.
2. How can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment.
3. What can you buy from us?
Mould,Plastic Product, Metal Product,Dental Product,CNC machining.
4. Why should you buy from us not from other suppliers?
Ningbo P&M Plastic Metal Product Co., Ltd. We main do all kinds of 3d design, 3d printing and plastic metal molds tooling and products. We have our own engineer and factory. One-stop supply:3d design - 3d printing - mold making - plastic injection.
5. What services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,FCA,DDP,DDU;
Accepted Payment Currency:USD,EUR;
Accepted Payment Type: T/T,L/C,PayPal,Western Union,Escrow;
Language Spoken:English,Chinese,Spanish,French,Russian.
6. What are the characteristics of your service?
1. Your inquiry related to our products or prices will be replied within 24hours.
2. Welltrained and experienced staffs to answer all your enquiries in fluent English.
3. Offering the support to solve the problem in the application or selling period.
4. Competitive prices based on same quality.
5. Guarantee samples quality same as mass production quality.