High-Reliability PCB Assembly

From prototyping to volume production, we offer a one-stop solution encompassing SMT (Surface Mount Technology) + THT (Through-Hole Technology) + testing + packaging, with a specialized focus on the fields of smart meters, energy, industrial applications, and IoT.

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Why Choose Our PCBA Services?

🎯 Deep Industry Expertise
We have an in-depth focus on the fields of smart meters, AMI (Advanced Metering Infrastructure) systems, and power terminal equipment. Familiar with the process standards of State Grid/China Southern Power Grid, we can precisely meet the customized PCBA requirements of the smart meter industry.
🔧 Comprehensive Full-Process Coverage
Our services cover the entire process, including SMT placement (from 01005 to BGA), THT insertion, conformal coating, Functional Circuit Testing (FCT), burn-in testing, and more, enabling one-stop delivery.
📊 Flexible Capacity Adaptation
We support rapid delivery of small-batch prototypes (1–100 pcs) and can also undertake medium to large-scale production (monthly capacity of over 500K points), catering to needs at different stages.
✅ Stringent Quality Assurance
Certified with ISO 9001 / IATF 16949, we employ full-process inspections using AOI (Automated Optical Inspection) + X-Ray + ICT (In-Circuit Testing) to ensure a product yield rate of ≥99.5%.
🤝 Supply Chain Collaboration
We offer value-added services such as procurement of smart meter-specific chips, Vendor Managed Inventory (VMI) management, and obsolete material handling, reducing clients' supply chain costs.
⚡ Rapid Response and Delivery
We provide accurate quotes within 48 hours, deliver prototypes in as fast as 5 days, and expedite bulk orders as needed, with an on-time delivery rate of ≥99%, meeting the urgent delivery requirements of smart meter industry bidding.

Our Service Capabilities: Placement Capability

Component Types:

Resistors/Capacitors (starting from 01005), QFN, LGA, BGA (pitch ≥ 0.2mm), connectors, relays, etc.

Board Support:

FR-4, aluminum-based boards, high-frequency boards, thick copper boards (≤ 12 oz)

Process Capability:

Maximum Size 510 × 460 mm, Placement Accuracy: ±0.025 mm

Testing and Post-Processing

AOI (Automated Optical Inspection)

100% inspection for surface defects such as component misalignment, dry soldering, and wrong component placement.

X-Ray Inspection

Non-destructive testing for BGA/hidden solder joints to ensure soldering quality.

Functional Circuit Testing (FCT)

Customized FCT fixture development to simulate real-world operating conditions and validate product functionality.

Conformal Coating

Application of conformal coating to enhance product resistance against moisture, dust, and corrosion.

Final Assembly and Packaging

Including barcode/serial number management and support for customized packaging solutions.

Industry application areas

Deeply engaged in high-reliability PCB assembly across multiple fields, adapting to full-scenario needs with precise processes to empower product upgrades in various industries!

Smart Electricity Meters

Full-process PCBA manufacturing for single-phase/three-phase smart electricity meters

Electricity Consumption Data Acquisition Terminals

Custom PCBA manufacturing for concentrators and collectors

Industrial Automation Controllers

PCBA Processing for PLCs and Industrial Control Boards

New Energy Monitoring Equipment

PCBA for Photovoltaic Inverters and Energy Storage BMS (Battery Management Systems)

IoT Communication Modules

PCBA for NB-IoT, LoRa, and HPLC Modules

Medical Equipment

PCBA for Patient Monitors, Blood Glucose Meters, and Medical Sensors

Automotive Electronics

PCBA for In-Vehicle Central Control Units, BMS (Battery Management Systems), and ADAS (Advanced Driver Assistance Systems) Modules

Aerospace Electronics

PCBA for Satellite Communication, Navigation Modules, and Aerospace Telemetry, Tracking, and Command (TT C) Systems

Cooperation process

Requirement Submission

Provide materials such as Gerber files, BOMs, coordinate files, and testing requirements.

DFM Review

Free engineering evaluation and manufacturability optimization suggestions.

Quotation Confirmation

Provide a detailed quotation and delivery schedule within 48 hours.

Prototyping/Pilot Production

Rapid delivery of functional prototypes within 5–7 days.

Mass Production

Strictly adhere to IPC-A-610 Class 2/3 standards.

Delivery and After-sales Service

Global logistics support + full traceability for quality assurance.

Successful Cases

Precision-Driven PCB Assembly for Multi-Field Full-Scenario Needs

Case 1: Mass Production of PCBAs for a European Electricity Meter Factory

We provided OEM services for smart electricity meter PCBAs to a leading smart electricity meter manufacturer in Europe, achieving a stable monthly production capacity of 20,000 units. We strictly adhered to international process standards, maintaining a product yield rate of over 99.8% and a 100% on-time delivery rate, thereby enabling our client to swiftly respond to power grid bidding requirements.

Professional PCB assembly service for smart meters

Case 2: Mass Production for a Smart Electricity Meter Solution Provider

We offered PCBA OEM services to a premier smart electricity meter solution provider in Europe, processing an order volume of 30,000 units. We strictly adhered to international process standards, maintaining a product yield rate exceeding 99.9% and achieving a 100% on-time delivery rate, thereby facilitating the client's swift market introduction.

Case 3: Rapid Prototyping of PLC Modules for an African Electricity Meter Manufacturer

We provided 3G-PLC module PCBA development services for an electricity meter manufacturer in Africa, completing the entire process from DFM review, prototype production to functional testing within 7 days. This enabled the client to validate their product prototype 2 weeks ahead of schedule, accelerating their product launch timeline.

High-Reliability PCB Assembly Services - FAQs?

What process steps do your PCB assembly services cover?

We provide one-stop full-process services, including SMT assembly (supporting 01005~BGA packaging), THT through-hole soldering, conformal coating, Functional Test (FCT), burn-in test, finished product assembly and customized packaging. No need to cooperate with multiple suppliers, achieving a closed-loop delivery.

What customized process capabilities do you have for the smart meter field?

With years of in-depth experience in the electricity meter industry, we are well-versed in both domestic and international process standards. We can provide high-precision placement, anti-interference testing, and high/low-temperature aging verification for PCBAs specifically designed for electricity meters. Additionally, we support hardware-software integration and debugging with the core chips of electricity meters, meeting the stringent reliability requirements of electricity meter products.

Besides smart meters, which other industry sectors do you serve?

In addition to smart electricity meters, our services also cover six fields: energy, industrial automation, IoT communication, medical equipment, automotive electronics, and aerospace electronics. We can provide customized solutions according to the compliance standards of different industries (such as IATF 16949, RoHS).

What is your production capacity range? Can you support both small-batch prototyping and large-scale mass production?

We have flexible capacity adaptation capabilities, supporting small-batch rapid prototyping of 1~100 pcs with the fastest delivery in 5 days; at the same time, we can undertake medium and large-batch production with a monthly capacity of over 500K solder joints, meeting the full-stage needs of products from prototype verification to large-scale mass production.

How long does the entire process take from submitting requirements to receiving samples?

The standard process takes 7 working days: issue accurate quotation and DFM (Design for Manufacturability) analysis report within 48 hours → complete prototype production and testing in 3~5 days after order confirmation → finish logistics delivery in 1 day. Urgent needs can be negotiated to be delivered within 5 days.

Supplementary Note

If quality problems are found during the inspection stage, cooperation for the corresponding batch will be terminated immediately, the customer will be notified in a timely manner, and the inventory will be returned, with logistics costs borne by us; if found after cooperation (not due to storage reasons), verified by the technical team to be inherent quality problems of the inventory, settlement will not be made, and we will assist the customer in tracing the liability of the original factory to protect customer rights and interests.

How do you ensure the delivery lead time for bulk orders?

We adopt a standardized production scheduling system. The delivery cycle for bulk orders is 15~30 days depending on the order quantity. We also provide real-time order progress inquiry service with an on-time delivery rate of ≥99%, which can meet the urgent delivery needs of bidding projects.

What is your quality control system like? What is the product yield rate you can achieve?

We have passed ISO 9001 and IATF 16949 dual certifications. The whole process adopts three quality inspection checks: AOI (Automatic Optical Inspection) + X-Ray inspection + ICT (In-Circuit Test) to ensure the product yield rate ≥99.5%. All products are provided with complete quality inspection reports.

Do the products comply with environmental protection and industry regulatory requirements?

Yes, all our products comply with EU environmental standards such as RoHS/REACH. For the automotive electronics field, they can meet the requirements of IATF 16949 certification; for the electricity meter field, they comply with Q/GDW State Grid specifications, and we support providing corresponding compliance certification documents.

Can you provide component procurement services?

Yes. We have supply chain synergy advantages, providing purchasing services for electricity meter-specific chips and industrial-grade components. We also support VMI (Vendor Managed Inventory) and obsolete material disposal, helping customers reduce supply chain costs and inventory risks.

What will you do if the Gerber files I provide have manufacturability issues?

After receiving the files, we will provide free DFM review services, giving optimization suggestions for potential issues such as PCB layout, component selection, and soldering processes. On the premise of not affecting product functions, we will improve production efficiency and reduce costs.

What is the basic process for cooperation?

The cooperation process consists of 6 steps: Demand Submission (provide Gerber/BOM/test requirements) → DFM Review → Quotation Confirmation → Prototyping/Trial Production → Mass Production → Delivery & After-Sales. A dedicated engineer will follow up the whole process.

How do you handle quality issues that arise after product delivery?

We provide full-process after-sales guarantee. If non-human quality problems occur in the delivered products, return or exchange can be applied for within 7 days; we also provide 1-year free technical support. For process problems during product use, engineers will respond within 24 hours and give solutions.

Supplementary Note

Contact Us

Contact: Jimmy

Tel/WeChat : +8618682318008

E-mail : info@otomosemi.com

Whatsapp :+8618123677761

Addess : 601 Tianyue Building, No. 110 Shajing Central Road, Bao'an District

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Contact Us: 601 Tianyue Building, No. 110 Shajing Central Road, Bao'an District; info@otomosemi.com; 86-18123677761

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