China Wholesale Memory Cards Factory & Suppliers

Global Enterprise-Grade RAM Modules, Custom Flash Storage, and OEM/ODM Motherboard Solutions from Shenzhen's Leading Tech Hub

High-Performance DRAM & Hardware Solutions

Explore our top-tier memory modules, high-frequency DDR components, motherboards, and PCB prototyping services designed for reliable computing.

DDR5 32GB 5600MHz RAM

Memory Module RAM DDR5 32GB 5600MHz Desktop Computer Memory Module RAM DDR5 4GB 8GB 16GB 32GB Server Memory

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DDR4 16GB 3200Hz RAM

DDR4 16GB 3200HZ Desktop RAM Server Memory RAM DDR3 4GB 8GB 16GB 32GB Memory Module

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DDR4 8GB 3200Hz RAM

DDR4 8GB 3200HZ Desktop RAM Memory Module Compatible with RAM 1600MHz 2666mHz 2400MHz 3200MHz

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Wholesale Desktop DDR4 8GB

Wholesale Desktop Fully Compatible RAM Original Chip DDR4 8GB 2400MHz Desktop RAM 2666mhz 3200mhz

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DDR4 8GB 2666Hz Server RAM

DDR4 8GB 2666HZ Desktop RAM Server Memory RAM DDR3 4GB 8GB 16GB 32GB Memory Module

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Server CPU Heat Sink

Server CPU Heat Sink Hydraulic Bearings Copper/Aluminum Fan 2U Fin 4 Heat Pipes ARGB Support Computer Case CE/FCC Certified

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H81M-G Motherboard Kit

Computer Motherboard H81M-G Desktop Motherboard for Office Computers Suitable for Core CPU Processor Heat Sink Kit

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Double Layer PCB Printing Machine

TOP PCB Double Layer Board PCB Printing Making Machine China Manufacture Projector double side PCB design

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China Sourcing Strategy: Memory Cards & Modules Supply Chain

The global demand for reliable flash storage and high-speed dynamic random-access memory (DRAM) has escalated exponentially. As consumer devices, high-density cloud networks, and edge intelligence systems evolve, sourcing managers require dependable, scalable manufacturing partners. The Guangdong-Shenzhen electronics corridor serves as the epicenter of this industry, offering unmatched advantages in component sourcing, rapid prototyping, and cost optimization.

1. Direct Factory Advantages & Industrial Sourcing Ecosystem

Purchasing directly from specialized manufacturers in China ensures substantial cost-efficiencies and comprehensive product personalization. Vertically integrated factories benefit from a localized ecosystem containing raw wafer distributors, printed circuit board (PCB) assembly plants, controller IC suppliers, and testing centers. By removing middlemen, global buyers secure high-frequency DDR5 memory, industrial MicroSD cards, and legacy DDR3/DDR4 components at competitive prices.

Additionally, advanced SMT (Surface Mount Technology) assembly lines allow factories to implement rapid design iterations. For global suppliers, system integrators, and brand distributors, this means lead times are compressed, enabling faster responses to fluctuations in dynamic consumer markets.

2. Industry Evolution & Shift to High-Speed DDR5 Standards

The memory and flash storage industry is undergoing a significant transition. Legacy DDR3 and standard DDR4, while still popular in embedded systems, industrial computing, and office environments, are steadily yielding market share to DDR5 architecture. Sporting speeds starting at 4800MHz up to 5600MHz and beyond, DDR5 brings architectural improvements designed to tackle modern compute bottlenecks.

Key technological differentiators include On-Die ECC (Error Correction Code), which corrects single-bit errors within the DRAM silicon itself, and PMIC (Power Management Integrated Circuit) integration. Migrating the power management from the motherboard directly onto the memory module reduces power consumption, ensures clean current delivery, and provides system builders with far greater control over stability and performance.

15+
Years Industry Experience
84
R&D Engineers
100%
Full Inspection
138
New Models Launched

Velmix Technology Co., Ltd. Company Profile

A premier DDR5 and memory module manufacturer, delivering cutting-edge solutions for international markets.

Velmix Technology Co., Ltd. is a professional DDR5 memory manufacturer based in Shenzhen, China, specializing in the research, development, production, and global distribution of high-performance DRAM memory solutions. Since its establishment in 2017, Velmix has been committed to delivering reliable, high-speed memory products for consumer electronics, industrial applications, gaming systems, servers, and embedded computing.

Operating from a modern manufacturing facility covering 368㎡, we combine advanced production technologies with strict quality management to ensure every memory module meets international performance and reliability standards. Our experienced engineering team continuously develops innovative DDR5 memory solutions to meet the evolving demands of AI computing, edge devices, cloud infrastructure, and next-generation computing platforms.

Today, Velmix serves customers in more than 40 countries and regions, offering flexible OEM and ODM manufacturing services for global brands, distributors, system integrators, and industrial equipment manufacturers. By focusing on product consistency, fast delivery, and technical innovation, we have built long-term partnerships across Europe, North America, Southeast Asia, and the Middle East.

Specification Item Operational Capability & Sourcing Details
Company Name Velmix Technology Co., Ltd.
Established 2017
Facility Area 368㎡ (High-efficiency Cleanroom Assembly & Validation Facility)
Annual Export Revenue USD 18.6 Million
Export Experience 8 Years of Worldwide Logistics and Customs Operations
Industry Experience 15 Years of Memory and PCB Manufacturing Background
Quality Control Protocol 100% Full Inspection Before Shipment
Inspection Methodologies Signal Integrity Test, Burn-in Test, Compatibility Test, Functional Test & Random Sampling
Dedicated QC Staff 56 Quality Engineers & Technicians
Business Orientation Manufacturer, OEM/ODM Provider, and Direct Exporter
Primary Demographics North America, Europe, Southeast Asia, Middle East & South America
Supply Chain Network 986+ Verified Partners and Raw Material Suppliers
Core Client Base Brand Owners, OEM Manufacturers, System Integrators, Distributors & Wholesalers
In-House R&D Competence Independent PCB Layout Design, Firmware Optimization & Controller Customization
Customization Parameters Private Labels, Customized Capacity configurations, Heat Spreader design, PCB coloration & Packaging
Product Innovation Cycle 138 Models Launched over the Past Fiscal Year
R&D Engineering Pool 84 Experienced Hard-tech Engineers

Industrial Implementations & Strategic Sourcing Best Practices

Deploying storage and memory hardware requires matching component specs to the specific demands of the target system. Standard solutions may lead to system errors, bottlenecks, or premature component wear in specialized environments.

1. Application Architecture & Industry Integration

A. Industrial Automation & Smart IoT Nodes: Embedded motherboards and systems operating in factories require memory cards and modules engineered for extreme conditions. High endurance, thermal resilience (-40°C to 85°C), and rugged physical design ensure constant logging and data collection without system failure.

B. High-Density Edge Nodes & Edge Servers: Edge computing systems process massive datasets before forwarding them to the central cloud. These networks rely on enterprise RAM, like DDR4 ECC RAM, to maintain data integrity and prevent system halts during processing.

C. Consumer Electronics & Gaming PC Systems: High-bandwidth DDR5 RAM modules (up to 5600MHz) satisfy the low-latency demands of modern high-fidelity gaming systems, video rendering rigs, and local artificial intelligence models. This performance is backed by advanced thermal distribution systems like customized aluminum heat spreaders.

2. Quality Verification & Rigorous SMT Testing Protocols

Reliable memory starts with top-tier silicon. Quality-focused manufacturers rely on rigorous, multi-tiered testing protocols rather than simple visual checks:

Signal Integrity Analysis: Simulates high-frequency conditions to ensure clean data transfer across the PCB lanes, checking for crosstalk and impedance mismatches.

Thermal Stress Burn-in: Subjecting memory modules to elevated temperatures under workload limits to weed out weak components before packaging.

System-Level Compatibility Validations: Installing the products in a wide range of consumer, server, and legacy motherboards (including Intel and AMD chipsets) to confirm seamless plug-and-play operation for final users.

Navigating Customization & ODM Manufacturing Parameters

Tailored OEM options and structural specifications for commercial clients.

PCB Customization

Choose from multi-layered designs, structural sizes (standard desktop, SODIMM, low profile), and customized substrate colors to fit your system styling.

Firmware Adaptations

Optimize SPD settings and write controller firmware custom-tuned to bypass chipset limitations and prevent bios incompatibilities.

Private Branding

Access custom laser engraving, high-end aluminum heat spreaders, and bespoke retail-ready packaging designed for international markets.

Industry FAQ: Strategic Sourcing Insights

Practical answers to key questions about sourcing memory, storage, and motherboards directly from China.

Q1: How do you guarantee memory module compatibility with legacy motherboard systems?

We maintain a comprehensive testing lab featuring older motherboard chipsets alongside the latest releases. This enables us to verify SPD settings, timing adjustments, and voltage profiles, ensuring stable plug-and-play functionality across different platforms.

Q2: What brand of DRAM chips/wafers are utilized in your memory modules?

We source original wafers from leading manufacturers including Samsung, SK Hynix, and Micron. This allows us to supply high-grade ETT chips to match the performance and reliability requirements of your target market.

Q3: What are the differences between standard consumer RAM and ECC RAM?

Consumer RAM prioritizes speed and raw capacity. ECC (Error-Correcting Code) RAM features extra memory chips that detect and correct single-bit data errors. This is crucial for servers and workstations where system crashes can corrupt critical operations.

Q4: How do you control quality on PCB production and motherboard assembly?

Our assembly lines utilize automated optical inspection (AOI), X-ray structural checks, and final functional testing. This multi-stage QC process helps catch and resolve solder and trace issues before the boards leave the facility.

Q5: Can you accommodate small-batch OEM orders for custom designs?

Yes. We keep our production scheduling flexible to support system builders and regional brands with lower initial order requirements. This lets you validate designs and build market demand without heavy upfront component commitments.

Q6: What is the typical lead time for custom brand orders?

For standard customized products (OEM packaging and laser logo printing), typical lead times range between 7 to 15 working days, depending on material availability and production queues.

Q7: How do you handle shipping logistics and customs clearance?

We work with reliable international logistics networks to offer air cargo, sea freight, and express options. We also provide full HS coding and export documentation to help simplify customs clearance at your destination port.

Q8: How does DDR5 improve over DDR4 in real-world use?

DDR5 doubles the burst length and features two independent 32-bit subchannels, which significantly increases memory efficiency. It operates at a lower base voltage (1.1V compared to DDR4's 1.2V), reducing overall power consumption.

Q9: What warranty terms do you provide for bulk purchases?

We back our memory modules with a 3-to-5-year limited warranty. If any manufacturing defect is found under normal operating conditions, we offer repair services or replacement units.

Q10: Are your manufacturing processes compliant with environmental regulations?

Yes. All of our production processes comply with CE, FCC, RoHS, and REACH guidelines. This ensures our components meet standard environmental and safety requirements for resale worldwide.

Industrial Systems, PCBs, & Desktop Motherboards

Complete your hardware line with specialized double-sided prototype boards, custom server modules, and core computing platforms.

Welding Machine Motherboard

circuit board 220v single board ZX7-200/250 welding machine motherboard 3.2 welding rod long time use

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DDR4 ECC RAM

Factory Wholesale DDR4 4GB 8GB ECC RAM for Desktop Laptop 2133MHz 2400MHz 2666MHz in Stock

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B760M-G Gaming Motherboard

B760M-G Desktop Computer Motherboard 12400F, Suitable for Core CPU Processor Set, Gaming with Multiple Ports

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H61 DDR3 Motherboard

H61 DDR3 Motherboard 1156 Pin P55 Desktop Computer Motherboard DDR3 Memory Support I3 530 I5 750 660 CPU

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Factory Selling DDR4 8GB Desktop Memory

Factory Hot Selling Server Memory DDR4 8GB Desktop Computer Memory 1600MHz 2666mHz 2400MHz 3200MHz

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Double Side PCB Prototype Breadboard

5*7cm Double Side pcb Prototype Breadboard Printed Circuit Board Tinned Universal other PCB Circuit Board

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Hot Selling Server Memory RAM DDR4

Hot Selling Server Memory RAM DDR4 4GB 8GB 16GB 32GB Desktop Memory Module Compatible RAM 2666mHz 2400MHz 3200MHz

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OEM B250 Motherboard

EOM EDM Computer Motherboard B250 Original Desktop 1151 B250 B250M DDR4 Motherboard LGA 1151 I7/i5/i3 USB3.0 SATA3

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