# Loongtion > Loongtion is a product owner and manufacturer of industrial SSD (SATA, NVMe, BGA), DRAM chips, eMMC, storage modules, and wide-temperature storage cards for automotive, telecom, defense, and embedded OEMs. > Ningbo sales; Xi'an R&D and reliability testing. Public product, resource, and support pages may be indexed and cited. Links in Optional may be skipped for shorter context. ## Docs - [About Loongtion](https://www.loongtion.com/about): Company profile and capabilities - [Contact](https://www.loongtion.com/contact): Sales, support, and application engineering - [Custom service](https://www.loongtion.com/custom-service): Custom storage solutions and form factors - [FAQ](https://www.loongtion.com/faq): Frequently asked questions - [Downloads](https://www.loongtion.com/downloads): Manuals and policy documents - [Service support](https://www.loongtion.com/service-support): Warranty and after-sales support - [News](https://www.loongtion.com/news): Articles and company news - [Resources](https://www.loongtion.com/resources): Technical articles, guides, and whitepapers ## Products - [Enterprise SSD](https://www.loongtion.com/products/enterprise): Enterprise-grade SATA and NVMe SSD - [Industrial SSD](https://www.loongtion.com/products/industrial): Industrial wide-temperature SSD, NVMe, and storage modules - [Military-spec SSD](https://www.loongtion.com/products/warsoul): Military-spec rugged storage - [Industrial NVMe SSD](https://www.loongtion.com/products/industrial-NVMe-ssd): Industrial M.2 NVMe SSD product line - [Industrial SATA SSD](https://www.loongtion.com/products/industrial-sata-ssd): Industrial 2.5" and mSATA SSD product line - [BGA SSD](https://www.loongtion.com/products/BGA-ssd): Solder-down BGA SSD for embedded systems - [Storage chips](https://www.loongtion.com/products/storage-chips): DRAM chips, eMMC, and NAND flash - [Storage modules](https://www.loongtion.com/products/storage-moudules): SATA DOM, SDC, LGA and industrial storage modules - [Memory cards](https://www.loongtion.com/products/memory-card): Industrial CF, CFast, SD and microSD cards - [Enterprise M.2 2280 NVMe SSD (DRAM cache)](https://www.loongtion.com/products/enterprise-m2-2280-nvme-dram.html): Product specifications and datasheets - [Industrial M.2 2280 NVMe SSD (DRAM cache)](https://www.loongtion.com/products/industrial-m2-2280-nvme-dram.html): Product specifications and datasheets - [Industrial rugged NVMe SSD](https://www.loongtion.com/products/industrial-rugged-nvme.html): Product specifications and datasheets - [Industrial NVMe BGA SSD](https://www.loongtion.com/products/industrial-nvme-bga.html): Product specifications and datasheets - [Industrial eMMC TLC](https://www.loongtion.com/products/industrial-emmc-tlc.html): Product specifications and datasheets - [Industrial 2.5" SATA SSD (DRAM cache)](https://www.loongtion.com/products/industrial-25-sata-dram.html): Product specifications and datasheets - [Industrial rugged SATA SSD](https://www.loongtion.com/products/industrial-rugged-sata.html): Product specifications and datasheets - [Industrial DDR4 DRAM chip](https://www.loongtion.com/products/industrial-ddr4-chip.html): Product specifications and datasheets - [Industrial DDR5 DRAM chip](https://www.loongtion.com/products/ddr5-memory-chip.html): Product specifications and datasheets - [Industrial LPDDR4X DRAM chip](https://www.loongtion.com/products/lpddr4x-memory-chip.html): Product specifications and datasheets - [Military-spec NVMe BGA SSD](https://www.loongtion.com/products/warsoul-nvme-bga.html): Product specifications and datasheets ## Technical resources - [eMMC vs UFS in Industrial Storage Architectures: Protocol Differences and Design Trade-offs](https://www.loongtion.com/resources/emmc-vs-ufs-industrial-tradeoffs.html): A technical comparison of eMMC and UFS for embedded and industrial storage, covering interface fundamentals, command... - [What Is eMMC? Embedded MultiMediaCard Glossary](https://www.loongtion.com/resources/emmc.html): eMMC (Embedded MultiMediaCard) is an integrated flash storage solution combining NAND flash, a controller, and a JEDE... - [Loongtion DDR3 DRAM chip: Integration and Selection Guide](https://www.loongtion.com/resources/loongtion-ddr3-dram-chip-integration-and-selection-guide.html): A practical guide to selecting and integrating Loongtion DDR3 DRAM chip components for industrial embedded designs, c... - [Industrial SD and microSD Storage — Protocol and Selection Notes](https://www.loongtion.com/resources/sd-industrial-storage-overview.html): A guide to SD and microSD card protocols, industrial-grade attributes, and key integration considerations for embedde... - [NOR Flash for Boot and Firmware Storage in Industrial Devices](https://www.loongtion.com/resources/nor-flash-boot-storage-basics.html): A practical guide to using NOR Flash for boot and firmware storage in industrial embedded systems, covering execute-i... - [DDR Memory PCB Layout Best Practices for Rugged Systems](https://www.loongtion.com/resources/ddr-pcb-layout-best-practices.html): Practical layout guidelines for DDR3/4/5 in industrial and embedded systems, covering signal integrity, length matchi... - [NVMe BGA SSDs for Solder-Down Embedded Storage: A Hardware Design Guide](https://www.loongtion.com/resources/nvme-bga-ssd-embedded-design.html): A practical guide to integrating NVMe BGA SSDs into embedded designs, covering PCB layout, power sequencing, thermal... - [M.2 NVMe SSDs for Industrial Computing: A Selection Guide](https://www.loongtion.com/resources/m2-nvme-industrial-ssd-overview.html): Compare Loongtion M.2 NVMe industrial SSDs with DRAM cache. This guide focuses on the DRAM-cache series for peak perf... - [Integrating Industrial eMMC 5.1 in Embedded Systems: A Practical Guide](https://www.loongtion.com/resources/industrial-emmc-integration-guide.html): A step-by-step guide to integrating Loongtion Industrial eMMC 5.1 devices into embedded designs, covering hardware co... - [LPDDR4X for Low-Power Industrial Platforms: A Technical Guide](https://www.loongtion.com/resources/lpddr4x-low-power-industrial-memory.html): Explore how LPDDR4X memory meets the demands of space-constrained, battery-powered industrial devices. This guide cov... - [Wide-Temperature Industrial Storage — Common Engineering Questions](https://www.loongtion.com/resources/wide-temperature-storage-faq.html): Engineering answers for wide-temperature (-40°C to +85°C) industrial memory and storage: NAND behavior, qualificati... - [What are the guidelines for trace impedance (e.g., 40Ω or 50Ω) for DDR3 signals and the required trace width for a given stack-up?](https://www.loongtion.com/resources/what-are-the-guidelines-for-trace-impedance-e-g-40ohm-or-50ohm-for-ddr3.html): Practical answer covering common impedance targets for DDR3 and guidance on trace width based on stack-up, referencin... - [Is it acceptable to use through vias instead of blind or backdrilled vias for DDR3 routing to reduce PCB costs?](https://www.loongtion.com/resources/is-it-acceptable-to-use-through-vias-instead-of-blind-or-backdrilled-via.html): A practical field answer for engineers weighing cost vs. signal integrity: through vias can work for DDR3 if timing m... - [How do I compensate for an unbalanced number of vias in DDR3 routing, and what are the signal integrity implications?](https://www.loongtion.com/resources/how-do-i-compensate-for-an-unbalanced-number-of-vias-in-ddr3-routing-and.html): Practical techniques to compensate for unbalanced vias in DDR3 PCB routing and the resulting signal integrity effects... - [Why Does DDR3 Memory Have a BGA Footprint with Two Columns of Pads and an Empty Column?](https://www.loongtion.com/resources/what-is-the-reasoning-behind-the-unique-bga-footprint-of-ddr3-memory-pac.html): The DDR3 BGA footprint uses two columns of pads with an empty column to improve signal integrity, simplify board rout... - [Can I swap data wires (e.g., connect DQ0 on the CPU to DQ1 on the memory) on the data bus between the CPU and a DDR3 x16 memory for routing optimization?](https://www.loongtion.com/resources/can-i-swap-data-wires-e-g-connect-dq0-on-the-cpu-to-dq1-on-the-memory-on.html): Swapping individual DQ lines between CPU and DDR3 x16 memory is not recommended for standard designs. Within a byte l... - [For DDR3 layout, what is the acceptable skew tolerance (e.g., 25 mils) within a net class, and does the reset line require length matching?](https://www.loongtion.com/resources/for-ddr3-layout-what-is-the-acceptable-skew-tolerance-e-g-25-mils-within.html): Practical answer for DDR3 layout: skew tolerance within a net class depends on signal group (e.g., data vs. address/c... - [How do I properly length-match the different signal classes (address/command/clock vs. DQ/DM/DQS) for DDR3 routing?](https://www.loongtion.com/resources/how-do-i-properly-length-match-the-different-signal-classes-address-comm.html): Practical guidelines for length-matching DDR3 signal groups: address/command/clock vs. DQ/DM/DQS. Covers why matching... - [What are the minimum number of PCB layers required for proper DDR3 fanout and routing to keep costs down?](https://www.loongtion.com/resources/what-are-the-minimum-number-of-pcb-layers-required-for-proper-ddr3-fanou.html): Loongtion documentation does not specify a minimum PCB layer count for DDR3. General engineering practice recommends... - [Systemd Boot Optimization: Why dev-mmcblk0p2.device Takes 4.5 Seconds on an Embedded eMMC System?](https://www.loongtion.com/resources/systemd-boot-optimization-dev-mmcblk0p2-device.html): Learn why the dev-mmcblk0p2.device unit delays boot by 4.5 seconds and how to optimize eMMC initialization using kern... ## Whitepapers - [Industrial DDR3 Memory Selection Guide](https://www.loongtion.com/resources/industrial-ddr3-memory-selection-guide.html): Engineering guide for selecting industrial-grade DDR3 DRAM chips for embedded and rugged applications. - [Industrial DDR4 Memory Selection Guide](https://www.loongtion.com/resources/industrial-ddr4-memory-selection-guide.html): Selection criteria, reliability factors, and specification tables for industrial DDR4 DRAM chips. - [Industrial DDR5 Memory Selection Guide](https://www.loongtion.com/resources/industrial-ddr5-memory-selection-guide.html): Industrial DDR5 DRAM chip overview for next-generation embedded platforms. - [Industrial LPDDR4X Memory Guide](https://www.loongtion.com/resources/industrial-lpddr4x-memory-guide.html): Low-power LPDDR4X DRAM chip selection guide for space-constrained industrial designs. - [Industrial eMMC 5.1 Storage Guide](https://www.loongtion.com/resources/industrial-emmc-5-1-storage-guide.html): Industrial eMMC 5.1 whitepaper covering endurance, temperature grades, and BGA integration. - [Industrial NVMe BGA SSD Guide](https://www.loongtion.com/resources/industrial-nvme-bga-ssd-guide.html): BGA NVMe SSD selection for embedded systems requiring solder-down storage. - [Industrial M.2 NVMe Cacheless SSD Guide](https://www.loongtion.com/resources/industrial-m2-nvme-cacheless-ssd-guide.html): Cacheless M.2 NVMe architecture for deterministic industrial workloads. - [Industrial M.2 NVMe DRAM Cache SSD Guide](https://www.loongtion.com/resources/industrial-m2-nvme-dram-cache-ssd-guide.html): DRAM-cached M.2 NVMe SSD selection for high-performance industrial applications. ## News - [42mm M.2 2242 SATA SSD: The Unlikely Hero of 85°C Industrial Environments](https://www.loongtion.com/news/industrial-m2-2242-sata-ssd.html): News article - [Industrial vs. Consumer 2.5-inch SSDs: Why the Price Gap? Four Core Differences That Determine Reliability](https://www.loongtion.com/news/industrial-vs-consumer-25-inch-ssd-differences.html): News article - [Industrial eMMC pSLC: Technical Principles, Core Advantages and Industry Applications](https://www.loongtion.com/news/industrial-emmc-pslc-technology.html): News article - [Why M.2 SATA 2242/2280 SSDs, Obsolete in Consumer Market, Are Indispensable in Industry](https://www.loongtion.com/news/m2-sata-2242-2280-industrial-ssd.html): News article - [Enterprise SSD Selection for AI Scenarios: Stability Over Speed](https://www.loongtion.com/news/ai-enterprise-ssd-selection.html): News article ## Optional - [Industrial DDR4 for GCC Extreme Heat | Loongtion](https://www.loongtion.com/lp/ddr4-gcc-extreme): Regional or campaign landing page - [Industrial Memory Chips Manufacturer & Supplier | DDR3–DDR5, eMMC, NVMe BGA | Loongtion](https://www.loongtion.com/lp/industrial-memory-chips): Regional or campaign landing page - [Industrial M.2 NVMe SSD Manufacturer & Supplier | 2280 & 2242 | Loongtion](https://www.loongtion.com/lp/nvme-industrial): Regional or campaign landing page - [Industrial SATA DOM Manufacturer & Supplier | SLC Disk on Module | Loongtion](https://www.loongtion.com/lp/sata-dom): Regional or campaign landing page - [Serial number lookup](https://www.loongtion.com/serial-query): Product serial number verification tool