Shenzhen Sunda Technology Co.,Ltd

Name: Shenzhen Sunda Technology Co.,Ltd
Address: shenzhen, Shenzhen, CN
Telephone: +8613923411890

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Shenzhen Sunda Technology Co.,Ltd

15 Years of CNC Machining | Sheet Metal Fabrication |3D Printing | Vaccum Casting| Rapid tool+Injection mould

Shenzhen Sunda specialized in the manufacturing of Prototypes & Volume Production in plastic & metal materials for all industrial sectors. we have provided service for more than 15 years in CNC machining, Sheet metal fabrication, Vaccum casting parts, 3D printing parts, Extrusion, Die casting, Rapid tooling and Injection mould. we create parts with complex geometric designs and highly cosmetic d

emands with one-stop service of surface finishing and treatments.She is a nice professional maker with excellent service, fair price, fast lead time and great quality. Our well-equipped facilities, professional machining technical knowledge, strict quality control through all the stage of production enables us to make the customer-satisfied prototypes and machining parts. We guarantee the quality of your parts meet ISO 9001:2015 certified quality management system and options to add inspections, hardware traceability, material certifications, and COCs. Non-stop development for researching new technology to shorten customers
R&D cycle is what we purist.

06/01/2026

Precision Silicon Molds & Components: Where Innovation Meets Microscopic Accuracy
In an era where miniaturization and complexity define the next generation of products, the tools we use to create them matter more than ever.
Precision silicon molds and components are at the heart of this revolution, enabling breakthroughs across industries—from microfluidic devices for life sciences to intricate optical elements and advanced consumer electronics.
Why does silicon stand out?
✔ Extreme Precision & Detail: Capable of achieving sub-micron features and exceptional surface finishes, perfect for R&D and high-tolerance production.
✔ Rapid Prototyping to Production: Accelerate development cycles with durable molds that bridge the gap between concept and scalable manufacturing.
✔ Material Flexibility: Ideal for casting a wide range of polymers, resins, and composites with high consistency.
✔ Cost-Effective for Complex Geometries: Enables the production of sophisticated parts often impossible or prohibitively expensive with traditional metal tooling.
Whether you're pushing the boundaries of medtech, electronics, or materials science, the right mold can make the difference between a idea and a market-ready innovation.
We're proud to partner with engineers and innovators to turn complex designs into reality. Let's discuss how precision silicon solutions can elevate your next project.

27/11/2025

Vacuum casting is a manufacturing process that uses a vacuum to draw liquid resin into a silicone mold to replicate a master model, making it ideal for creating low-volume production runs of high-quality plastic or rubber parts. A master pattern is used to create a silicone mold, which is then filled with a casting material in a vacuum chamber to ensure a bubble-free, detailed result. This method is cost-effective for prototypes and pre-series parts because it avoids the need for expensive hard tooling, unlike traditional injection molding.

How it works
Create a master pattern: A master pattern is made using techniques like 3D printing or CNC machining, often from a CAD model.
Create the silicone mold: The master pattern is encased in liquid silicone rubber, which is then allowed to cure. The mold is then cut in half to remove the master pattern.
Prepare for casting: The two halves of the silicone mold are reassembled, and a gating and ventilation system is added. The mold is then placed in a vacuum chamber.
Pour the casting material: Liquid urethane resin is poured into the mold. The vacuum removes air bubbles, ensuring the material completely fills every detail of the cavity.
Cure and demold: The part is cured, either at room temperature or in an oven, and then removed from the silicone mold. The mold can typically be reused for about 30 parts before needing to be replaced。

Key features and applications
Low-volume production: It is a fast and economical solution for producing a small batch of parts, often used for market testing, prototypes, and pre-series runs.
High detail and quality: The process can replicate intricate details and is often used to create parts with a finish similar to injection-molded components.
Material versatility: It can be used with a variety of materials, including rigid and flexible plastics, rubbers, and even some metal alloys.
Design flexibility: The use of silicone molds allows for complex shapes and undercuts that would be difficult or expensive with traditional metal molds.
Commonly used in: Automotive, aerospace, medical devices, and consumer electronics industrie

Advantages
Lower cost for short runs compared to hard tooling.
High design flexibility and ability to produce complex shapes.
Produces parts with high aesthetic quality

12/12/2024

In modern manufacturing, sheet metal fabrication plays a pivotal role across various industries, from electronics and automotive to aerospace. As a highly efficient and precise manufacturing process, sheet metal fabrication not only enables the production of complex parts but also contributes significantly to product innovation and smart manufacturing.

What is Sheet Metal Fabrication?

Sheet metal fabrication is a process that involves shaping metal sheets through techniques such as cutting, bending, welding, punching, and laser cutting to create metal components or assemblies. Its core advantages include the ability to produce large volumes of standardized parts with high precision and relatively low costs.
The Importance of Sheet Metal Fabrication Across Industries
Precision and Flexibility Sheet metal fabrication utilizes advanced CNC equipment and automation systems to meet both small-batch and mass production needs. Whether manufacturing intricate enclosures or ultra-precise components for the aerospace industry, sheet metal fabrication ensures high accuracy and consistency.
High Material Utilization Compared to other manufacturing processes, sheet metal fabrication maximizes material usage, reducing waste. This not only lowers production costs but also enhances the overall value of the products, which is especially important as sustainability becomes a more significant focus in the global manufacturing landscape.

Wide Applications :

The versatility of sheet metal fabrication makes it a fundamental process in nearly all industrial sectors. For example, in the automotive industry, the body panels of vehicles are often made through stamping and bending, while in consumer electronics, precision sheet metal fabrication is used to produce housings, brackets, and other critical components.

Emerging Technologies Shaping the Future of Sheet Metal Fabrication
As technology continues to advance, the field of sheet metal fabrication has also seen significant innovation. Digitalization, automation, and smart manufacturing are leading the way for the next phase of development.

Smart Manufacturing and Automation The use of automated sheet metal fabrication equipment, such as robotic welding, automated stamping presses, and intelligent laser cutting machines, not only increases production efficiency but also reduces human error, leading to higher product quality. The introduction of smart production lines allows for greater flexibility and customization.

If you have any questions or collaboration inquiries about sheet metal fabrication,contact me directly at [email protected], Sunda is a great manufacturer.
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01/11/2024

Our CNC Machine Shop boasts an extensive array of cutting-edge machinery, encompassing 3, 4, and 5-axis CNC machines, CNC turning machines, and CNC milling machines. This comprehensive range empowers us to offer customized solutions that align precisely with our customer’s unique product requirements, all while optimizing costs. we not only do the prototypes also the volume production machining. also welcome you to contact us at [email protected]

Low Volume Machining

Low-volume production, sometimes called small batch CNC machining, involves producing parts in small quantities, usually between fewer than ten to one thousand pieces. Aside from bridging the gap between prototypes and mass production, this CNC manufacturing process has gained more popularity due to its numerous advantages, including cost reduction, ease of changing design, and increased access to emerging markets, and it is ideal for making products with short life cycles.

Custom or Prototype CNC Machining
Prototype or custom parts CNC machining is a reliable and efficient process that enables the efficient production of custom parts or prototypes in smaller quantities during new product development (NPD). Modern CNC machining and custom manufacturing technology allow different business owners to leverage prototype CNC machining to make precise and highly accurate prototypes in the design process to achieve functional prototypes with the exact fit, form, and function of the finished product.
Besides, CNC technology is a widely embraced choice for custom parts production in different industries. The same technological advancement that makes CNC machining ideal for prototyping is the same that makes it a perfect choice for custom parts manufacturing. The CNC machining process is cost-effective for creating custom and prototype machined parts with superior quality and tight tolerances. 话题标签话题标签话题标签话题标签

29/09/2024

What is aluminum extrusion profiles?
Aluminum profiles are products born from aluminum alloys that are transformed into shaped objects through the extrusion process. Aluminum’s unique combination of physical characteristics mostly depends on this process. Aluminum extrusions are used in several fields because this metal is:
Strong and stable
Malleable – it can be easily cast and machined
A good conductor
Non-magnetic
Repeatedly recyclable without losing integrity

Therefore, aluminum is employed in a growing number of manufacturing needs, including the production of components for international space stations or in nuclear power plants.
Versatile applications of aluminum profiles across industries
Aluminum profiles, with their versatility and durability, have found their way into a myriad of applications across various industries.

Below is an overview of some of the key sectors where these profiles are extensively utilized, highlighting their diverse functionalities:

Construction and architecture: in this sector, aluminum profiles are used for window frames, door frames, curtain wall systems, and structural facades. Their lightweight nature and resistance to corrosion make them ideal for modern architectural designs, enhancing both aesthetics and energy efficiency;

Automotive and transportation: aluminum profiles play a crucial role in reducing vehicle weight, thereby improving fuel efficiency and reducing emissions. They are used in chassis, body parts, railings, and frames within cars, trucks, trains, and even aerospace applications;

Solar energy systems: the renewable energy sector, particularly solar panel frames and mounting systems, benefits from the durability and corrosion resistance of aluminum profiles. They ensure long-term stability and performance of solar installations in various environmental conditions;

Electronics and electrical: due to aluminum's excellent thermal conductivity, profiles are used in heat sinks, enclosures, and frames for electronic devices ranging from consumer gadgets to large servers and cooling systems;

Furniture and interior design: in the realm of furniture and interior design, aluminum profiles offer both structural support and aesthetic appeal. They are used in modular kitchens, office partitions, shelving units, and decorative elements, providing a sleek, modern look;
These applications underscore the adaptability and essential role of aluminum profiles in advancing technology, sustainability, and design across industries.

Sunda also helps customer make the customized aluminum extrusion parts to be used in different industries. hashtag hashtag

Aluminum cnc machining service from Sunda. we accpet MOQ 1 pc to volume production. welcome to contact sales@sundpart.co...

13/08/2024

Aluminum cnc machining service from Sunda. we accpet MOQ 1 pc to volume production. welcome to contact [email protected]

13/05/2024

Sheet metal fabrication is a subtractive manufacturing process that forms parts from thin metal sheets. Engineers often choose sheet metal parts for their high precision and durability, especially for end-use applications like chassis, enclosures, and brackets. it is the process of turning flat sheets of steel or aluminum or other material into metal structures of products by cutting, punching, folding and assembling. Sheet metal can be cut, bent or stretched into nearly any shape, which is generally done by cutting and burning the metal.
How the Sheet Metal Fabrication Process Works
Metal fabrication tends to start from processing raw materials, which are often large and thick – for example, steel, aluminium and copper. Sheet metal can be cut, bent or stretched into most desired shapes.
Here are the typical steps for how it works:
Design
The design stage is where the groundwork for the project is laid out. Designers will usually create initial sketches or 2D/3D models of the product, which may be done using cAD software or by hand.
Important factors such as the intended use of the product, the required dimensions and tolerances, and any specific materials or finishes that will be needed are mapped out before the manufacturing begins.
Cutting
Laser cutting is typically the first step in the manufacturing process. Laser cutting is one of the most precise ways of cutting sheet metal as the lasers are able to follow the programmed design and cut through the material accurately.
Bending
The bending process is known as CNC folding and is a practice that can be completed using a variety of machines. For example, a manual press brake or automated panel bending machine.
The machine forms the metal part by clamping the sheet metal and applying pressure to maintain the desired curvature.
Forming
The forming process bends or deforms the material into the required shape. Different from cutting, which subtracts the material, forming actually reshapes the material without decreasing any of its mass.
Welding
There are different ways of welding that can be used when working with sheet metal, including MIG welding, TIG welding, robotic MIG welding and spot welding.
Metal inert gas (MIG) welding: A typically fast welding option that is better for thicker materials.
Tungsten inert gas (TIG) welding: Offers greater control and precision than MIG. Best for thinner materials.
Robotic MIG welding: This is an automated version of more traditional MIG welding.
Spot welding: This follows an electrical resistance welding process.
Finishing
Finishing is the last step when preparing metal products for use and makes products more resistant to corrosion, adding another layer of durability. It also helps make the surfaces look appealing.
Common finishing touches could include surface preparation, Polising and powder coating in a choice of colours , anodising, passivation, and laser marking (such as logos or etching some text).
Assembly
In a sheet metal fabrication project, assembly refers to the assembling of the required products before they are packaged and delivered to where they need to be.

08/05/2024

What are the general processes that can be used for post processing of CNC machining?

Post-processing after CNC machining is crucial to achieve the desired final product quality and appearance. Here are some general processes that can be used for post-processing CNC machined parts:

1. Deburring:
After machining, parts often have sharp edges, burrs, or rough areas. Deburring involves removing these imperfections using various techniques such as manual filing, tumbling, abrasive blasting, or using deburring tools.

2. Sanding and Polishing:
Sanding and polishing help improve the surface finish of machined parts. This can be done using sandpaper, abrasive pads, or polishing compounds to achieve a smoother and more refined appearance.

3.Anodizing:
Anodizing is an electrochemical process that adds a protective oxide layer to the surface of metal parts. It can also enhance the part‘s corrosion resistance and provide a decorative finish by allowing for various color options.

4. Plating and Coating:
Plating or coating processes involve applying a layer of metal or other materials onto the machined part‘s surface. This can enhance the part‘s appearance, durability, and functionality. Common plating options include chrome, nickel, and gold plating.

5. Painting and Powder Coating:
Painting and powder coating provide a wide range of color options and can also offer corrosion resistance and protection. Powder coating involves applying a dry powder to the part‘s surface, which is then cured to form a durable finish.

6. Heat Treatment:
Some parts might undergo heat treatment processes like annealing, tempering, or quenching to alter their mechanical properties, such as hardness or strength.

7. Engraving and Marking:
Engraving or marking can be used to add logos, part numbers, or other identifying information to the machined part‘s surface. This can be done through laser engraving, etching, or other methods.

8. Assembly:
If the part is part of a larger assembly, post-processing might involve assembling components, fasteners, or other elements to create the final product.

9. Cleaning and Degreasing:
After machining, parts might have coolant, oil, or debris on their surfaces. Cleaning and degreasing ensure that the parts are free from contaminants before proceeding with further post-processing steps.

Inspection and Quality Control:
Post-processing should always include thorough inspection to ensure that the machined parts meet the desired specifications. This can involve measurements, visual checks, and functional tests.
Packaging and Shipping Preparation:

Once the post-processing is complete, the parts are typically packaged and prepared for shipping or delivery to the customer. Proper packaging ensures that the parts reach their destination in good condition.

22/04/2024

What is Vacuum Casting?

Vacuum casting, also called urethane casting is a manufacturing process in which a liquid material is poured into a mould and allowed to solidify. Vacuum casting involves using a vacuum to remove air from the mould, which helps ensure that the object takes on the desired shape.
This process is often used for casting plastics and rubber parts. Vacuum casting is often used for prototype projects or small-scale production runs, as it can be faster and less expensive than other methods, such as injection moulding.
The main advantage of vacuum casting is that it allows for high accuracy and repeatability, making it an ideal choice for applications where precise dimensions are critical. It also allows for more intricate designs to be cast. However, vacuum casting is not suitable for all applications. For example, it cannot be used to cast materials that are sensitive to heat or pressure.

How Does Vacuum Casting Work?
Vacuum casting, like conventional injection moulding, needs a mould tool with a cavity shaped like the finished object. In contrast to injection moulding, vacuum casting uses silicone moulds rather than hard metal ones.

Illustration of the vacuum casting process
Advantages of Vacuum Casting
The vacuum casting process has a wide range of usage in the industry. In industry, it is commonly used for low-volume production of prototypes or production parts. This production process offers several advantages over other methods of rapid prototyping and manufacturing.
Fine details: One advantage of the vacuum casting process is its ability to produce parts with fine details. The mould is formed using the 3D printed master model. The 3D printing process can produce intricate details, which can be replicated in the final cast.
Low cost: Another advantage of vacuum casting is its relatively low cost. Vacuum casting is much less expensive than other rapid prototyping methods, such as CNC machining. This is because it requires only a few hours to produce a mould, which can be reused multiple times. CNC machining requires costly tools and materials.
Dimensional accuracy: The vacuum casting process produces parts with excellent dimensional accuracy. The parts produced via vacuum casting will fit together perfectly without needing post-processing steps such as sanding or drilling.
Flexibility: It provides a high degree of design flexibility. This is because almost any geometry can be created using 3D printing. As a result, parts that would be impossible to produce using other methods can be easily made using vacuum casting.

08/04/2024

CNC machining parts with material of aluminum and steel.

Address

Shenzhen
Shenzhen

Telephone

+8613923411890

Website

http://www.sundapart.com/

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