• From Sample to Mass Production
    From Sample to Mass Production

    Custom Precision Manufacturing Services from Mold Development to Finished Product Assembly

    PJ Precision provides mold design, mold making, plastic injection molding, metal
    parts processing, finished product assembly, packaging, and custom production support.
    PJ Precision provides mold design, mold making, plastic injection molding, metal parts processing, finished product assembly, packaging, and custom production support.
    Get a Quote

PJ Precision’s Manufacturing Capabilities

PJ Precision supports B2B custom manufacturing projects from mold development to finished product assembly. We provide mold design, mold making, plastic injection molding, metal parts processing, product assembly, packaging, and production support from samples to mass production.
PJ Precision supports B2B custom manufacturing projects from mold development to finished product assembly. We provide mold design, mold making, plastic injection molding, metal parts processing, product assembly, packaging, and production support from samples to mass production.
Precision Mold Design & Manufacturing
We provide custom mold design and mold making support based on drawings, samples, or product requirements, helping customers build a reliable mold foundation for sample production and mass production.
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Plastic Injection Molding

With our in-house injection molding capabilities, we produce custom plastic parts and injection-molded components for a wide range of B2B projects, supporting both sample trials and mass production.

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CNC Machining Support


We provide CNC machining support for custom metal or plastic components that require precise dimensions, structural machining, or small-batch production.


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Custom Product Manufacturing
We can help develop and manufacture custom parts or finished products based on customer-provided drawings, samples, or product ideas, according to project specifications and production requirements.
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Product Assembly & Packaging

We provide product assembly, quality inspection, packaging, and delivery preparation support, helping customers move from individual components to finished products ready for packaging and delivery.

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Precision Mold Design & Manufacturing
We provide custom mold design and mold making support based on drawings, samples, or product requirements, helping customers build a reliable mold foundation for sample production and mass production.
Learn More
Plastic Injection Molding

With our in-house injection molding capabilities, we produce custom plastic parts and injection-molded components for a wide range of B2B projects, supporting both sample trials and mass production.

Learn More
CNC Machining Support


We provide CNC machining support for custom metal or plastic components that require precise dimensions, structural machining, or small-batch production.


Learn More
Custom Product Manufacturing
We can help develop and manufacture custom parts or finished products based on customer-provided drawings, samples, or product ideas, according to project specifications and production requirements.
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Product Assembly & Packaging

We provide product assembly, quality inspection, packaging, and delivery preparation support, helping customers move from individual components to finished products ready for packaging and delivery.

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How We Support Your Custom Manufacturing Project

From drawings, samples, or product ideas to finished parts and assembled products, PJ Precision supports every step of your custom manufacturing project through project evaluation, production planning, quality inspection, packaging, and shipment preparation.
From drawings, samples, or product ideas to finished parts and assembled products, PJ Precision supports every step of your custom manufacturing project through project evaluation, production planning, quality inspection, packaging, and shipment preparation.
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Why Choose PJ Precision

PJ Precision is a custom manufacturing factory located in Dongguan, Guangdong, China. Since 2013, we have supported projects involving mold development, plastic injection molding, metal parts processing, product assembly, and packaging. Our team focuses on practical production control, clear communication, and flexible manufacturing support from samples to mass production.
Responsive Project Evaluation: You can send us your drawings, samples, or project requirements. Our team will evaluate the material, manufacturing process, quantity, and production feasibility, then provide practical feedback or quotation suggestions as soon as possible.
Manufacturing Experience Since 2013: Since 2013, we have supported custom manufacturing projects involving mold development, plastic injection molding, metal parts processing, product assembly, and packaging. We understand the practical manufacturing processes required to move from sample development to stable production.
In-House Manufacturing Support: We provide hands-on factory manufacturing support for B2B custom projects. Our capabilities include mold making, plastic injection molding, product assembly, and packaging, and we can coordinate additional processing support based on project requirements.
Flexible Support from Samples to Mass Production: Whether you need sample development, small-batch production, or mass manufacturing, we can help turn your drawings, samples, or product ideas into finished parts or assembled products based on your project requirements.
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  • Our Story: From Ideas to Real Products

    PJ Precision was founded in Dongguan, Guangdong, one of China’s well-known manufacturing cities. Since 2013, we have focused on hands-on factory manufacturing and custom manufacturing projects, which often begin with a drawing, a sample, or a product idea.


    For us, manufacturing means understanding what our customers want to create, communicating practical production details clearly, and helping each project move step by step toward finished parts or assembled products.

    PJ Precision was founded in Dongguan, Guangdong, one of China’s well-known manufacturing cities. Since 2013, we have focused on hands-on factory manufacturing and custom manufacturing projects, which often begin with a drawing, a sample, or a product idea.


    For us, manufacturing means understanding what our customers want to create, communicating practical production details clearly, and helping each project move step by step toward finished parts or assembled products.

    About Us

Custom Manufacturing Project Cases

Showcasing the types of custom products and components we have supported through mold development, production, assembly, and packaging.
Showcasing the types of custom products and components we have supported through mold development, production, assembly, and packaging.
Mosquito Killer Lamp Manufacturing
Providing custom plastic housings, component assembly, and packaging support for assembled consumer products.
Portable Cooler Box Manufacturing Project
Providing injection-molded components, structural assembly, and production support from samples to finished products.
Golf Cart Rearview Mirror Components
Providing custom plastic and metal component support for functional vehicle accessory projects.
Golf Ball Washer Product Assembly
We provided injection-molded components, metal hardware assembly, product assembly, and support for packaged finished products.
EV Charging Connector Components
We provided custom plastic and metal component manufacturing support based on project specifications.
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Confidential Project Evaluation

Start Your Custom Manufacturing Project

You can send us your drawings, samples, or project requirements. Our team will review your information and provide practical manufacturing recommendations based on project feasibility.
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Service

    No. 106, Zhouwu Road, Dongcheng District, Dongguan, Guangdong, China
    +86 13650450728
    +86 18024614439
    +8618024614439
    pjjingmi@gmail.com
    PJ Precision - Custom Products & Manufacturing

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© 2026 PJ Precision. All rights reserved. PJ Precision is operated by Dongguan Pinjie Precision Plastic & Hardware Co., Ltd.

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