China Supro MFG

metal boxes

A full range of custom metal enclosure solutions

Meet all functional requirements, standards and aesthetics.

Industry Enclosure

Electronic Enclosure

PCB Enclosures

Junction Box Enclosures

metal boxes manufacturer

Supro MFG is an industry-leading custom metal box manufacturer in China, actively providing a full range of custom metal box manufacturing solutions according to various industry applications, environments, industry standards and functional requirements.

Whether it’s small aluminum box, extruded aluminum box, stainless steel box, carbon steel box, die-cast junction boxes enclosures, or sheet metal box, we have 28 years of experience ensuring the delivery of high-quality, close-tolerance metal boxes.

aluminum alloy sheet metal fiber box fabrication

Rapid Prototype Turnaround

Committed to exceeding expectations for quality and rapid turnaround, and meeting high-quality sheet metal parts.

On-Demand Sheet Metal

Whether it is rapid prototyping & large-volume manufacturing, we will implement it according to customer needs and standards.

Real Fabricators Price

Integrate product design, bending, stamping, cutting, surface treatment, etc. to provide a series of manufacturing solutions.

Custom metal cabinets fabrication Material Solutions

At Supro MFG, we offer a full range of metal materials to meet the demanding requirements of any industry or environment, and we can proactively advise our customers on metal fabrication techniques that utilize the properties of the materials to maximize the life and functionality of their products.

China sheet metal fabrication services

Aluminum Alloy box

Lighter, lower cost aluminum alloy with excellent heat dissipation and corrosion resistance.

custom stainless steel control cabinet

stainless steel box

Widely used stainless steel, with very good strength, suitable for medical, food and other industries. Good corrosion resistance,  metallic luster.

power metal cabinets

Iron box

The most cost-effective metal material, good yield strength. Often the surface is galvanized and powder coated.

sheet metal enclosure

Carbon steel box

Very good yield strength, low cost, higher strength construction. Galvanized and powder coated surfaces are added.

custom metal enclosure manufacturer

galvanized steel box

It is commonly used for complex structures with a thickness of 5mm or less, and the surface is coated to prevent rust and corrosion.

custom stainless steel enclosure

Titanium box

Excellent impact resistance, suitable for welding, long term operation at 350°. Widely used in the aerospace industry.

Aluminum Alloy

stainless steel

Copper

steel

Other

1060

6061-T6 / T5

6063

5052-O

5083

5754

7075

2A12

201

303

304

316

316L

420

430

440

H62

H65

H68

H90

C10100

C11000

C12000

C51100

Q235 - F

Q255

16Mn

12CrMo

# 45

20 G

10 GA

0.6mm - 200mm

1220mm * 2440mm

Custom roll & Strips

0.05mm - 300mm

1220mm * 2440mm

Custom roll & Strips

0.5mm - 6mm

1200mm * 4000mm

Custom roll & Strips

0.5mm - 500mm

1500mm * 6000mm

Custom roll & Strips

Why choose Supro MFG's Custom metal box Services

Supro MFG has been specializing in custom metal box for over 20 years, ranging from product design, rapid prototyping, low-volume manufacturing to long-term high-volume production. We have accumulated a wealth of manufacturing experience and expertise in over 2,000 corporate sourcing programs. We have unrivaled processes in manufacturing technology and quality control.

We are adept at solving customized metal box project needs across a wide range of industries, including medical, military, construction, new energy, power, food manufacturing, etc. No matter how demanding and complex your product is, Supro MFG will deliver high quality sheet metal box on time products.

Notably, Supro MFG has the capability to design and manufacture OEM metal box that are waterproof, dustproof, shockproof, and other stringent quality standards such as NEMA standards and IEC standards, ensuring that all box are in high performance and protective features.

Provide the most cost-effective cost solution for manufacturing and assembling products, expanding product competitiveness.

a technical team specializing in custom shell manufacturing for more than 30 years.
Advanced Manufacturing Equipment: Industry-leading custom metal enclosure manufacturer with in-house sheet metal, die casting, precision machining workshops, and surface coating workshops.

ISO 9001-2015, PPAP III level, RoHS, NEMA, CE and other certified production standards.
24H*7 online English technical support: The professional English team responds quickly to users’ technical questions online at any time.

help users from product design, prototype, batch manufacturing, surface treatment, assembly and packaging, transportation and a series of value-added services.

With in-house mechanics and chemistry laboratories, it can quickly monitor manufacturing process quality control to ensure the delivery of high-quality products.

Accept to sign NDA documents to ensure that customers’ product information is protected.

Door-to-door delivery in customizable secure packaging after complying with the delivery details agreed with the customer.

custom copper table bracket

metal box fabrication services

With our extensive experience in custom sheet metal fabrication and our advanced equipment.

We can handle precision sheet metal fabrication projects for any industry.

laser cutting services

sheet metal bending

metal welding fabrication

extrusion molding services

CNC Machining services

metal Surface treatment

No design files? Let Supro MFG do it for you.

We often come across clients who have no professional design drawings and documentation, only a creative idea, which leads to the project being at a standstill.

If you are in this situation, then contact our team of experts.

Supro MFG, as an industry-leading custom metal fabricator, has an ever-experienced team of engineers who utilize their extensive fabrication experience and technical expertise to build your idea into a real product and create design files such as STEP/STP/SLDPRT/DXF/PDF/PRT/DWG/AI.

That’s what makes SUPRO MFG so great, and 2,000 corporate, entrepreneurial, artist, and other purchasers from around the world enjoy working with us and benefiting from our one-stop manufacturing services.

Precision aluminum extrusion parts manufacturer in China

Accessories assembly & surface aesthetics

Custom Metal box Fabrication

Flexible Accessories Assembly Services

In order to meet better functional custom metal enclosure projects, Supro MFG provides a full range of customized accessories and installation services. Whether your project is used in electronics, electrical appliances, industrial, medical and other industries, we can match your enclosure project with high Quality hardware, and installed correctly: hinges, rails, handles, shutters, casters, rain covers, standard/non-standard fasteners, locks, wall brackets, dividers, sponge seals, hydraulic springs, pneumatic struts, etc. .
We provide competitive value-added services, you can provide these accessories, we can also help to purchase at the factory price, provide after-sales warranty and replacement services.

custom stainless steel control cabinet
sheet metal bending enclosures parts

Aesthetics Surface Finishing Services

Metal enclosures are usually used as outer protection and decoration. While protecting the internal precision instruments to the greatest extent, perfect visual aesthetics is an important role required by the project.
We provide a series of services such as aluminum alloy anodizing, stainless steel electropolishing, physical spraying, polishing, wire drawing, sandblasting, screen printing, laser engraving, UV spraying, etc.
Customizable color settings,
It can effectively enhance the anti-corrosion, anti-oxidation, and increase the strength of the material, and can also achieve the effect of improving the appearance.

Surface treatment of metal brackets

Supro MFG will choose the right materials, accessories, manufacturing process, etc. according to your needs and application. At the beginning of custom metal bracket projects, all fabrication details will get your permission. Helping you to complete your project with the easiest and most efficient way.

Powder Coating

Effectively wraps metal surfaces and resists rust with aesthetically pleasing custom colors.

Precision aluminum alloy extrusion parts manufacturing in China

anodic oxidation

Forms an oxide film on the surface of aluminum alloy to improve hardness, aesthetics, and corrosion resistance.

custom stainless steel control cabinets

Brushed polished

It presents a glossy metallic texture with an even grain that enhances the aesthetics of the product.

carbon steel stamping parts

sandblast

Cleaning the metal surface, presenting a uniform roughness and improving the adhesion of the paint.

mirror polishing

The metal surface is polished and honed to give a mirror-like finish, increasing the aesthetic effect of the part.

electroplated

A metal protective film, improve wear resistance, conductivity, reflectivity, corrosion resistance and enhance the role of aesthetic.

custom stamping parts

laser engraving

Commonly used for engraving on the surface of parts, logos, product descriptions, or complex patterns.

screen printing

Printing paint onto the surface of a product creates content of any shape and color that is hard-wearing and beautiful.

Custom metal Enclosure Material Solution

Supro MFG will choose the right materials, accessories, manufacturing process, etc. according to your needs and application. At the beginning of custom metal enclosure projects, all fabrication details will get your permission. Helping you to complete your project with the easiest and most efficient way.

Aluminum alloy

5052/5005/5082

stainless steel

201/301/304/316/316L

Carbon Steel

Galvanized Steel/Painted steel

F.A.Q

Supro MFG is a professional Chinese sheet metal manufacturer, we specialize in the design and manufacture of custom sheet metal parts fabrication and Sheet metal Prototype, ISO 9001-2015 certified, providing a full range of sheet metal parts fabrication solutions and technical support .
We are not a trader, all products are done in our in-house factory, we have a reliable supplier of surface treatment, heat treatment, and standard parts to support us, and we can provide you with economical sheet metal manufacturers ex-works prices.

We have our own sheet metal fabrication factory, welding workshop, laser cutting workshop, and precision CNC Machining workshop, with a total area of more than 3000 square meters, with 12 technical engineers, 36 skilled workers, 6 quality engineers, and a professional English sales team.

Of course, we keep all the customer's information confidential, sign a non-disclosure agreement, our factory will not allow unrelated personnel to enter without authorization, your product design and patented technology will be protected by us.

Yes, we have rich manufacturing experience and technical knowledge, can draw professional design files (including: STL/STEP/IGES/PDF/CAD, etc.) according to your ideas, and provide you with free manufacturability solutions. Actively help you optimize product design, reduce costs, and make your product design more dynamic in the sales market.

From raw materials to finished packaging, we will provide you with reliable quality inspection reports and photos at any time. If you need an authoritative third-party inspection report, we can also actively cooperate to ensure that you will receive high-quality products.

T/T, Paypal western union, L/C, and other channels you suggest (contact us for negotiation).

Yes, we can provide system documentation for PPAP level3.

Our quotations are all factory quotations from manufacturers, and all manufacturing costs and labor costs are traceable. We all use the raw materials of authoritative manufacturer brands, refuse to cut corners, and all products are subject to our quality control.
While there are plenty of small businesses that offer you a very low price, the quality can be at risk.
What your project needs more is the guarantee of high-quality products and on-time delivery, not high-risk.

We do not set a minimum order quantity. Whether you need a small amount of prototypes or large quantities, we will treat you equally and provide you with a full range of manufacturing services and technical support.

We will develop a detailed production plan, every point in time will be practically verified, and all processes are under our monitoring to ensure on-time delivery of high-quality products. (Except for the influence of force majeure factors)
Once there is a signal of delay, we will organize more production capacity to ensure on-time delivery.

Get instant ex-factory price quotation.

If you only have an idea or an old sample,Let us know.

with photo or video and get our quotation and manufacturing solutions.

  • Product design drawings or 3D model files.
  • Material standards and appearance requirements.
  • Product quantity demand.
  • Industry standards in the application field.
  • Functional requirements