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Declaration of Metal Conflict-Free Metal

At Yun Industrial Co., Ltd. dba: ACME PCB Assembly, we are fully committed to ethical sourcing and responsible business practices throughout our entire supply chain. We proudly declare that all metals used in our production processes are Conflict-Free, ensuring that none of our materials contribute to human rights violations or illegal trade activities.

Our Commitment to Responsible Sourcing

ACME PCB Assembly takes a proactive approach to ensure that metals such as Gold (Au), Tungsten (W), Tantalum (Ta), Cobalt (Co), and Tin (Sn) used in our electronic assemblies are not sourced from mines or suppliers involved in conflicts within the Democratic Republic of the Congo (DRC) or neighboring regions. We conduct continuous audits, supplier verifications, and compliance assessments to ensure that all materials are obtained through legitimate and ethical trade channels.

Our team works closely with suppliers who adhere to the guidelines established by the U.S. Dodd-Frank Wall Street Reform and Consumer Protection Act (Section 1502) and the OECD Due Diligence Guidance for Responsible Supply Chains of Minerals from Conflict-Affected and High-Risk Areas.

Verified Conflict-Free Supply Chain

As a U.S.-registered company, ACME recognizes that trade routes originating directly from the DRC or transiting through Rwanda, Burundi, Uganda, Tanzania, and Kenya are classified by the United Nations Security Council as “non–conflict-free.” To maintain transparency and accountability, we ensure that none of our metal sources are connected to these regions or any non-governmental military groups.

We hereby confirm that all metals used in ACME PCB Assembly products are Democratic Republic of Congo Conflict-Free.

Quality, Integrity, and Customer Partnership

Our commitment to conflict-free sourcing reflects our broader mission—to be a trusted partner to our clients by consistently providing superior quality products, competitive pricing, and on-time delivery. As a full-service contract electronics manufacturer, we offer both Surface Mount (SMT) and Thru-Hole (PTH) assembly capabilities, supported by state-of-the-art equipment and a team dedicated to ethical, sustainable production.

By choosing ACME PCB Assembly, customers can have confidence that every board we produce meets the highest standards of quality and integrity—both technically and ethically.

Flexible Circuit board

Trends in PCB Technology 2025: HDI, Flexible PCBs & Embedded Components

The world of printed circuit board (PCB) technology is evolving rapidly. As design demands grow denser, smarter, and more compact, three trends are defining the next generation of electronics: High-Density Interconnect (HDI), Flexible & Rigid-Flex PCBs, and Embedded Components. At Board Assembly, we’re keeping a close eye on these advances to ensure our clients stay ahead of the curve.

1. HDI: Packing More into Less

HDI technology enables PCBs with tighter trace spacing, smaller vias, buried and blind vias, and multiple layers of interconnects. These capabilities support miniaturization while maintaining signal integrity. In fact, Ultra-HDI is pushing the envelope even further, with features like microvias smaller than 2 mil and dense layer stacking becoming more commonplace in 2025.

For applications in high-speed communication, computing, and mobile devices, HDI is indispensable. It allows more functionality per square millimeter and reduces signal path length, which helps with high-frequency performance.

2. Flexible & Rigid-Flex PCBs: Form Meets Function

Rigid-flex and flexible PCBs bridge the gap between rigid boards and adaptable electronics. As IoT, wearables, and foldable electronics grow in importance, demand for flexible interconnects is rising sharply.

These flexible circuits allow boards to bend, fold, or conform to shapes, reducing connector count, saving space, and improving reliability. Designers are combining rigid and flex segments into single boards (rigid-flex) to gain mechanical stability where needed and flexibility where required.

In 2025, we’re seeing material innovations: thinner substrates, more durable flex films, and improved adhesion layers, all designed to survive repeated bending cycles and harsh environmental conditions.

3. Embedded Components: The Next Level of Integration

Embedded component technology involves placing passive and sometimes active devices (resistors, capacitors, ICs) within the layers or substrate of a PCB rather than on its surface. This approach reduces board surface complexity, shrinks form factors, and improves performance by shortening signal paths.

By embedding components, PCB designers can reduce external solder joints, minimize parasitic inductance, and better manage circuit density. This trend is especially relevant for compact, performance-sensitive sectors like aerospace, medical devices, and wearable electronics.

Printed Circuit Board FabricationWhy These Trends Matter for Your Projects

  • Smaller form factors: More capability in less space.

  • Better performance: Shorter interconnects, cleaner signal paths, less noise.

  • Reliability & durability: Fewer external interconnects, more mechanically robust designs.

  • Modern applications: These technologies enable cutting-edge devices in AI, 5G, IoT, and more.

At Board Assembly, we support HDI, flexible, rigid-flex, and embedded-component assemblies to meet the demands of tomorrow’s electronics. Whether you’re prototyping or producing in volume, we’re ready to partner with you.

Turnkey Yun Industrial

An Overview of Board Assembly’s Full Turnkey Solutions

 

pcb assemby turnkeyWhen it comes to printed circuit board (PCB) manufacturing, the terms “full turnkey” and “turn-key assembly” are often synonymous with efficiency, quality, and convenience. At Board Assembly, we offer comprehensive solutions that cater to every aspect of PCB production. Our full turnkey services are designed to streamline the entire process, from initial design and prototyping to final production and testing, ensuring that every product meets the highest standards of quality and reliability.

What is Full Turnkey in PCB Assembly?

Full turnkey PCB assembly refers to a process where the manufacturer, like Board Assembly, takes complete responsibility for all aspects of the production. This includes procuring the raw materials, managing the supply chain, manufacturing the PCB, and handling quality control and testing. By opting for a full turnkey solution, clients can save time and reduce costs by avoiding the need to coordinate multiple vendors or manage various stages of the assembly process.

At Board Assembly, our full turnkey services start with a detailed understanding of the client’s needs. Our team of experts collaborates closely with clients to understand their project requirements, budget constraints, and timelines. From there, we handle everything, including sourcing high-quality components from trusted suppliers. Our extensive network of suppliers ensures that we can source the best materials at competitive prices, further optimizing the cost-effectiveness of the production process.

The Advantages of Turn-key Assembly with Board Assembly

One of the key benefits of choosing Board Assembly’s turn-key assembly services is the level ofRecycling Unused PCB control and oversight we provide throughout the entire production process. By managing every aspect of the assembly in-house, we can ensure stringent quality control measures are in place. Each PCB goes through rigorous testing and inspection phases, utilizing advanced equipment to detect any potential defects or inconsistencies. This meticulous attention to detail ensures that every circuit board that leaves our facility is of the highest quality.

Another advantage of our turn-key assembly solutions is the speed and efficiency with which projects can be completed. Because we handle every stage of the process, from design to delivery, we can significantly reduce lead times. This is particularly beneficial for companies operating in fast-paced industries where time-to-market is critical. By reducing production times without compromising on quality, Board Assembly helps clients stay competitive in their respective markets.

A Focus on Quality and Customer Satisfaction

At Board Assembly, quality is not just a buzzword; it’s a fundamental aspect of our business philosophy. Our full turnkey solutions are built around the idea of delivering superior quality products that meet or exceed customer expectations. We achieve this by implementing a robust quality management system that adheres to industry standards and continuously seeks to improve our processes.

Our commitment to customer satisfaction goes beyond just delivering a product. We provide ongoing support and services to our clients, ensuring they have everything they need to succeed. Whether it’s assistance with design optimization, troubleshooting, or after-sales support, our team is always ready to help. By choosing Board Assembly’s turn-key assembly services, clients gain a partner who is as invested in their success as they are.

Why Choose Board Assembly for Your Turn-key Needs?

Choosing a reliable partner for PCB assembly is crucial to the success of any electronic product. Board Assembly stands out in the industry due to our comprehensive full turnkey services that combine quality, speed, and cost-effectiveness. With our extensive experience and state-of-the-art facilities, we can handle projects of any size or complexity, ensuring that all your needs are met under one roof.

By opting for Board Assembly’s full turnkey solutions, you’re choosing a hassle-free, efficient, and reliable way to bring your products to life. With a proven track record and a commitment to excellence, Board Assembly is your go-to partner for all your PCB assembly needs.

For more information on how Board Assembly can support your project with our full turnkey solutions, visit our website at BoardAssembly.com and reach out to our team today.

By focusing on full turnkey and turn-key assembly services, Board Assembly provides a seamless, all-inclusive solution that enhances efficiency, reduces costs, and delivers high-quality PCBs to clients worldwide. Whether you’re a startup or an established enterprise, we have the expertise and resources to bring your vision to life with precision and excellence.

Cable Harness Assembly

ACME PCB Assembly Offers Cable Harness Services

Cable Assemblies include one or more wires that run together in a single sleeve with a connector or plug on each end.  Cable assemblies could be groups of wires or cables bundled together.  They are wrapped in a thermoplastic or vinyl sleeve, cable assemblies are ideal for directing groups of wires and cables around obstacles.

Cable assemblies are designed to perform specific functions that is determined by the plugs, terminals, and connectors that are found on each end.  They are used in most electronic applications, everything from flat panel displays to the automotive electronic system to integrated cockpit systems to simple LED lighted clothing, costumes and accessories.

What Do You Use Cable Assemblies For?

Cable assemblies intersect or interconnect different circuits or electrical paths, so they work together to transmit signals or power.  They usually only have two ends to connect point A to point B.

Ethernet Cable HarnessFor example, ethernet cable assemblies are designed to provide service supporting bandwidth speeds up to 10 Gigabit Ethernet, such as large data centers, military field units, and medical facilities.  For those applications that require a lightweight, smaller assembly that can transmit clearly and rapidly over great distances, support greater bandwidths, with high voltage isolation, then fiber optic cable assemblies would meet those needs.  A few of the industries that utilize fiber optic cable assemblies, include aerospace, automotive, industrial, medical, and military applications.

Cable harnesses are more complex in nature and may require different machinery and tools to be consistent with production. Creating slits and windows in cables demand specialized equipment to handle the various conductors within the insulation.  We

Located in Carson, California, ACME PCB Assembly utilizes top of the line technology from Schleuniger to perfectly cut, strip, and process any wire or cable you need. After 25 plus years in the business, ACME PCB Assembly has the experience to be your contract manufacturer for cable & wire harness projects. As an IPC-A-610 certified assembler with a certified trainer in house, you can be rest assured the cables and wires that come out of ACME will exceed the standards.

cable assemblies, cable harness assembly, cable harness service Los Angeles, cable harness

thru hole YUN INDUSTRIAL

Why Consider Using Through Hole Printed Circuit Boards?

Why Consider Using Through Hole Printed Circuit Boards?

In the printed circuit board business, there are two primary ways to mount components onto the circuit board: through-hole mounting and surface mounting. Through-hole mounting is the older technology and requires the circuit board manufacturer to drill holes through the PCB and place leads into the holes. More recently, surface mounted technology has taken over the field.

Through-Hole Components

Through-hole components come in one of two types of leads, radial and axial. Axial through-hole components run along the axis of symmetry of the component while radial components protrude in parallel from the same surface on a board.

Components of Surface Mount Technology

When you look at any modern PCB design, you will see SMT technology in most instances. Surface mount technology (SMT) is the most commonly used technology today. These types of boards and components have very small or no leads at all as their primary purpose is to be soldered directly on the surface of a PCB during the design process. This method allows for components to be much smaller, allowing for greater density and better overall performance on a smaller circuit board.

With surface mounting offering so many benefits, why even consider through hole flex printed circuit boards?

The reason is that through hole mounting offers stronger mechanical bonds. This makes through hole flex printed circuit boards the better option for devices that are designed to undergo major stresses, like sudden accelerations, collisions, or extreme temperatures. This makes them worth considering for military, automotive, and extreme sports applications.

Yun Industrial Acme PCB Assembly is capable of two types of printed circuit board assembly services. They are full and partial turn-key services. Full turn-key covers all aspects of PCB fabrication and assembly, including manufacture of PCBs, parts procurement, quality inspections, and final PCB assembly.