As a professional USB flash drive manufacturer with more than 14 years of industry experience, we focus on producing high-performance USB 3.0 flash chips in credit card shape for global phone accessories wholesaler & distributors, promotional gift companies,stationery supply,and for your personal or company brand businesses. Our credit card USB built-in naked PCB UDP, support large-scale assembly, free customization, and fast delivery, making them the first choice for promotional giveaways, corporate gifts, retail sales, and self-assembly USB projects.


Products Description
Our Credit Card USB with Type-C Dual Interface belongs to the high-end semi-finished USB 3.0 flash chips category, featuring an integrated USB-A + Type-C dual-port design. As a universal naked PCB core component, it is purpose-built for modern device compatibility, supporting direct OTG connections to smartphones, tablets, and laptops. This dual-interface UDP chip is the ideal solution for promotional gifts, corporate branding, retail electronics, and self-assembly USB production, addressing the growing market demand for cross-device data transfer.


Products Description
2 in-1 USB 3.0 + Type-C Dual Interface:
Revolutionary dual-port design integrates high-speed USB 3.0 (USB-A) and reversible Type-C connectors in one slim credit card body. Eliminates the need for adapters, enabling direct plug-and-play between Android/iOS smartphones, tablets, ultrabooks, and traditional PCs. The reversible Type-C port supports 10,000+ insertion cycles, double the durability of standard USB-A.


Ultra‑Fast USB 3.0 Transmission
Equipped with genuine USB 3.0 flash chips with brand sandisk,samsung,Hynix, this credit card USB delivers read speeds of 15–90MB/s and write speeds of 5–25MB/s, greatly improving efficiency for large file transfers, video copying, and data backup. Compared with traditional USB 2.0 versions, the transmission speed is increased by more than 3 time.
|
Capacity |
Music (MP3) |
Photos (5 million Pixels) |
Video (1080p) |
|
16gb |
4000 3.5 minutes songs |
9500 500million pixels |
1085 minute |
|
32gb |
8000 3.5 minutes songs |
19000 500million pixels |
2170 minute |
|
64gb |
16000 3.5minutes songs |
38000 500million pixels |
4340 minute |


Genuine Grade A Flash Memory, No Recycled Chips
We only use original brand flash memory chips and controllers from SMI, Alcor, CBM, Phison, etc. All chips are 100% original Grade A quality, never refurbished or downgraded. Each chip supports up to 100,000 erase/write cycles and maintains data for more than 10 years, ensuring long term stability.


Compact & Portable Credit Card Design
The slim credit card shape is ultra-thin and lightweight at only 15g. It fits perfectly into wallets, card holders, and pockets, making it extremely convenient for daily carry and business travel.


Strong Physical Protection
The naked PCB structure is inherently waterproof, shockproof, and dirtproof. It can work stably in an operating temperature range of -40°C to +70°C and storage temperature of -50°C to +85°C, adapting to harsh environments.
Wide Compatibility
Fully compatible with Windows 98/ME/2000/XP/Vista/7/8, Mac OS 8.6 and above, Linux 2.4.x and above. Supports plug‑and‑play on PCs, laptops, car stereos, TVs, speakers,Vehicle electronics and other USB‑enabled devices. With Type-c & usb3.0 dual socket,perfectly fitted to PC,andriod & mobile devices.


Low Cost & High Customization
As a semi-finished UDP chip, it can be matched with various casings such as metal, leather, plastic, and swivel shells, helping customers reduce assembly costs. Free logo printing is provided for orders over 50 pieces.


Strict Quality Inspection
Each unit passes full H2/H5 software testing and manual inspection. Our factory is equipped with high‑precision production and testing equipment, ensuring a defect rate far below the industry average.
Flexible Order & Fast Production
Support small MOQ, mixed capacity orders, and mixed color orders. Standard production time is 2–5 working days, and rush orders are supported to meet urgent promotional needs.


Product Specifications
|
Item |
Specification |
|
Product Name |
Credit Card USB |
|
Interface |
USB 3.0 |
|
Capacity |
4GB, 8GB, 16GB, 32GB, 64GB, 128GB, 256GB, 512GB, 1TB |
|
Read Speed |
15–90MB/s |
|
Write Speed |
5–25MB/s |
|
Flash Chip |
Brand Grade A chip |
|
Controller |
SMI, Alcor, CBM, Phison, etc |
|
Shape |
Naked PCB USB chip, no case |
|
Weight |
3g |
|
Operating Current |
<50mA |
|
Suspend Current |
<300uA |
|
Operating Temp |
-40°C ~ +70°C |
|
Storage Temp |
-50°C ~ +85°C |
|
Humidity |
1%–98% |
|
Data Retention |
≥10 years |
|
Erase/Write Cycles |
≥100,000 times |
|
Certifications |
CE, FCC, ROHS, Reach, ISO9001, ISO16949, ISO14000 |
|
Warranty |
2-Year |
|
Power Supply |
Plug‑and‑play, no external power needed |
|
Material |
Metal |
|
Color |
Customizable |
Actual Capacity Notes
Capacity calculation follows the industry standard: manufacturers use decimal (1GB=1000MB), while systems use binary (1GB=1024MB).
|
Wide Capacity:4GB,8GB,16GB,32GB,64GB,128GB,256GB,512GB,1TB |
||
|
4GB |
3.6-3.8GB |
Write Speed:40-50mb/s Read Speed: 50mb-120mb/s |
|
8GB |
7.4-7.6GB |
|
|
16GB |
14-15GB |
|
|
32GB |
28-30GB |
|
|
64GB |
50-60GB |
|
|
128GB |
110-120GB |
|


High Speed with write speed: 10mb/s-40mb/s and read speed:50mb-120mb/s.
With write speed:10mb/s-40mb/s to meet different clients' need,such as for promotional gifts,normally 10mb/s with affordable price. While for phone accessories distributors,can choose 40MB/S to establish their own brand usb flash drive series.
Products Appearance & Design
Our Credit Card USB adopts a minimalist naked PCB design with a slim, flat shape similar to a bank card. The surface is smooth and can be directly printed with logos, patterns, or text. With wide print size 84x52mm,the credit card supports full color printing and can offer free mock-up with 24 hours of exactly how your product will look with your required design or branding. Free samples can be ok within one day.
· Slim Credit Card Form Factor: Standard 85×54mm dimensions, ultra-thin 1.9mm profile-easily fits wallets.
· Dual Interface Integration: Seamless USB-A + Type-C ports; reversible Type-C for blind, one-hand operation.
· Naked PCB UDP Design: Durable metal contacts, shock-resistant PCB, customizable full-color printing (front/back).
· Minimalist Aesthetics: Smooth surface for high-resolution logo/brand printing-ideal for premium promotional gifts.


The ultra-thin structure allows it to be easily inserted into various custom casings. The metal contact part is reinforced to resist plugging and unplugging wear.


Products OEM & Customization Services
We provide comprehensive OEM/ODM customization for promotional companies, distributors, and brand clients:
Free Logo Customization
Free color printing or laser engraving for orders over 50 pieces. Supported formats: AI, EPS, CDR, PSD, PDF, JPG, ENG.
Data Preloading Service
Preload presentations,brochures,photos, catalogs, videos, or promotional files; support non-deletable data, custom icons, and auto-run functions. Free 500MB data loading is provided.


Products Encryption & Partition Function
Support password protection, dual-partition design, file lock, and user-modifiable passwords to enhance data security.
Detail Service: files(deletable or undeletable) preloaded,Autorun data,Password supported for usb chip.
a).Preload files into the udp chip,make it deletable or nondeletable,can also change Ico and Laber.
c).Auto-run:JPG files ,Video,Website and etc come out when plug the usb3.0 otg credit card usb into the computer.
d) customs lable volumn
e)file lock/dual zone
f).Make encryption to protect your data,password can be modified by user.

Products Packaging Customization
The type-c usb3.0 credit card usb flash drive are individual package and also the package comes with customs logo printing. There are different package options: polybag, tray, plastic box, metal tin box, wooden box, gift box, blister package, etc.



|
Package |
Advantage: |
|
Plastic Box |
Can clear see the inner usb flash drive to improve your logo visible Support 1-2 color printing and also full color printing,and the window allow you to sell inside usbs surface's logo to improve customs logo visible. |
|
Tin box with window |
Support 1-2 color printing and also full color printing,and the window allow you to sell inside usbs surface's logo to improve customs logo visible. |
|
Cardbox with window |
The box is small and cheap. On the back side can print customs logo,and via the window also see the customs logos. |



|
Package |
Advantage: |
|
Flip -out wood box |
Can silk-printing 1-2 color on the surface,and also can print full color or laser engraved customs logos. With eco-friendly wood material,it is eye-catching. |
|
Cloth Pouch |
Support 1 color printing on the cloth pouch,and pouch is more useful and easily keep. |
|
Small plastic box |
Professional for standard twist usb flash drive,which transparent surface make you see the logo of usb flash drive without opening the box. And easily attach to lanyard,or keychain to key hole of the small plastic box. |



|
Package |
Advantage: |
|
Blister Package |
It is come light-weight,and customs design appearance. On the paper card,can print logo,promotional message,or other customs information or usb specification. Without opening,can fully see the usb capacity too. |
|
Slide wood box |
Feature clear logo engraved on the large space of the wood box surface. And eco-friendly wood material make clients' like. |
|
Black gift box |
With one color customs logo to make usb flash drive look more luxury. |
Accessory Support
Free optional accessories: keychains, lanyards, neck straps, USB extension cables.
Free Mockups & Samples
Provide free digital mockups; physical samples available upon request.
Products Quality Control
We implement a full‑link quality control system certified with ISO9001, ISO16949, and ISO14000:
Incoming raw material inspection to ensure original Grade A chips.
Wafer test, PCBA die bonding, and semi‑finished product testing.
100% full testing using H2/H5 software for capacity, speed, and stability.
Manual appearance and function inspection before packaging.
Regular reliability tests including high/low temperature, drop, and vibration tests.


Products Sample Policy
Non-logo samples: ready within 24 hours.
Logo samples: ready within 2–3 days.
Sample fee can be refunded after bulk orders.
Support 1–10pcs sample testing.
Products Application Fields
Our Credit Card USB is widely used in many industries with real application cases:
Promotional Industry: Corporate gifts, trade show giveaways, brand marketing.
Real Estate & Construction: Store architectural drawings, 3D models, project introductions.
Schools & Universities: Student gifts, teaching materials, campus souvenirs.
Technology Industry: Embedded applications, electronic accessories, smart devices.
Tradeshow Events: Portable catalog display, product introduction carriers.
Travel & Tourism: Tourist souvenirs, travel guide storage.
Retail & Wholesale: Phone accessories, stationery supplies, office electronics.
cERTIFICATES



Our factory & quipment
Shenzhen Tanshuo Technology has been focusing on the production of mobile phone accessories products. It is designed and processed for event, commercial companies and foreign trade companies. The main products are USB storage products, Powerbank, wireless charging products, mobile wireless chargers, wireless charger modules, car wireless charger, wireless charging solution, etc.

Nand Flash Chips Testing

Nand Flash chips Weilding

SMT workplace

USB FLASH DRIVE PACKAGE

Car Charger Testing

USB FLASH DRIVE PACKAGE
FAQ
Q: Can you preload our marketing content into the USB flash drive?
A: Yes. We can preload any files including presentations, photos, videos, and catalogs. We offer 500MB FREE data loading to save your time.
Q: Can this flash drive fit in a wallet?
A: Yes. The compact credit card design allows it to fit easily into wallets or pockets, very convenient for daily carry.
Q: What are the distinctive features of it?
A: It is a slim USB drive with high-speed USB 3.0 performance, genuine flash chips, waterproof/shockproof/dirtproof, and supports otg pendrive usage on mobile devices.
Q: Can I order more than one color?
A: Yes. We accept mixed colors with a minimum of 25pcs per color.
Q: Can it be used on phones, desktops, and laptops?
A: Yes. It works smoothly on all USB‑enabled devices. It is also compatible as an otg credit card usb flash drive.
Q: Can you print a picture or logo on it?
A: Absolutely. We support full‑color printing, laser engraving, and pattern customization.
Q: What's the MOQ for logo printing? Is it free?
A: Logo can be made for any quantity. It is 100% free for orders of 50pcs or more.
Q: How long for logo production and delivery?
A: We provide a sample within 24 hours after receiving your logo file. Mass production will be finished and shipped within 5–7 days after confirmation.
Q: What file formats do you accept for logos?
A: AI, EPS, CDR, PSD, PDF, JPG, ENG.
Q: Why is the actual capacity less than marked?
A: This is normal industry logic. Manufacturers use decimal calculation (1GB=1000MB), while computers use binary (1GB=1024MB). All brands have the same capacity difference.
Q: Can this USB work on TVs and car stereos?
A: Yes. Please format it to FAT32 for best compatibility.
Q: Does it support Type‑C devices?
A: Yes, it can be used as a type c otg credit card usb flash drive with an adapter or built‑in dual interface.
Q: Is it compatible as a type c usb 3.0 usb flash drive?
A: Yes, it supports high‑speed transmission on Type‑C phones, tablets, and laptops.
Q: Is it available as an otg usb flash drive?
A: Yes, it supports OTG function for direct use on Android devices.
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