How does GreensTone Electronics handle part cross-referencing or replacements on turnkey PCB assembly orders?

After inspecting your Bill of Material, we transmit to the customer the parts we currently have in stock, which are usually low cost or free components. Our procurement team will give you suggestions regarding how to obtain cost savings in sourcing cross-referenced parts. This service is only advisory. The customer always makes the final decision.

For turnkey assembly orders, what is the process by which GreensTone Electronics procures components?

If we do not have inventory in stock, we order parts in volume per your Bill of Materials (BOM) so you obtain the highest level of cost savings. For hard-to-find or rarely used parts, we typically add 5% as spare parts to insure we have enough parts to manufacture your complete order. For order minimums, we contact the customer for approvals.

What are your turnkey lead times?

Total lead time includes part sourcing plus assembly lead time. We try to compress the total lead time by using our resources to accomplish work in a timely fashion. Once he have received your Gerber file and Bill of Material, we begin procuring your parts and preparing the stencil.

What is the minimum size for turnkey assembly orders?

As a general rule, we have no minimum order size. However, larger orders obtain greater cost savings.

What do you do with extra parts not used in the turnkey PCB assembly process?

We can maintain extra parts in stock to be used on future orders. But if you want the parts for your own testing, we can send them to you at no charge. Contact us about the extra parts when your PCBs are ready for shipment.

What information do I need to provide to initiate a turnkey PCB assembly order?

Gerber file(s) Bill of Material (BOM) in Microsoft excel (.xls) format that includes the vendors’ names, part numbers, ref designators, detailed part description and amount needed. Centroid data file Other specifications or instructions as needed.

What is included in a Centroid data file?

Created by a CAD system, a Centroid data file is a machine file that details the X, Y, side, top, bottom and rotation locations, as well as the reference designator that is used in PCB prototype fabrication and assembly.

Is GreensTone capable of manufacturing lead free PCB Assembly?

Yes. GreensTone’s production facilities has two additional assembly areas dedicated to lead free assembly.

Can GreensTone Electronics perform partial PCB assembly?

Yes. When you place a turnkey PCB assembly order, please make it know to our order entry team what components you prefer not to be assembled and ensure this preference is annotated in your bill of materials.

For multiple orders, how does GreensTone prefer parts to be kitted?

Place multiple kits in one shipping package with each order labeled by the appropriate order number. Shared parts should be marked by a label to indicate their common use. Increase the extra parts quantity by 5 percent for each separate order.

How do I need to label and package parts?

Label with the part number and reference designators per your BOM each tray, bag or container. Parts that require special storage requirements such as static or moister should be packaged appropriately. Seal or tap.

What does 'small quantity' mean in terms of batch size?

We take orders from 5 to 5000 for each production lot.e tightly all SMT parts. Loose parts can be damaged and can delay the production process.

What happens after we send you all the information?

Our project manager will get in touch with you via mail within 24 hrs. We will provide each of our customers with a username and a password in order for them to log into our customer database. Our customers will find all the information regarding their projects such as project status in MS Project format , order status, shipping information, RMA request and so on.

What is GreensTone' s payment term?

Our account-receivable payment policy ranges from T/T in advance to NET 45days depending on the length of business relationship with that specific customer.

FAQs

Do you source components from authorized distributors?

We procure components from official authorized channels. Counterfeit, refurbished and dismantled parts are strictly prohibited.

Will you replace components without confirmation?

Any alternative materials require written customer approval before use. No unauthorized replacement.

Do you support customer-supplied materials?

Yes. We offer PCBA assembly with customer-provided components.

Can you provide full material traceability?

Yes. Material batches are recorded in Oracle ERP, supporting complete traceability.

Do you provide free DFM review before production?

Free pre-production DFM analysis is provided to optimize manufacturability and reduce risks.

What design files do you accept?

We support Gerber, BOM and CPL files for prototype and mass production.

Can you help optimize circuit layout?

Our engineering team supports layout suggestions and design revisions.

What testing equipment do you have?

We are equipped with SPI, AOI and X-Ray to detect soldering quality and hidden defects.

Can you do conformal coating and aging testing?

Yes. Custom three-proof coating, aging and moisture-proof testing are available.

Do you follow IPC manufacturing standards?

All production follows standard IPC workmanship requirements.

Do you outsource most processes?

Core SMT production lines are in-house. Key processes are not outsourced.

What is your typical production lead time?

Standard lead time is short. Urgent prototype orders are supported.

Are there any hidden fees?

Quotations are transparent. Stencil fees and manufacturing costs are clearly listed without extra charges.

Do you offer discounts for repeated orders?

Yes. Long-term repeat orders are eligible for reasonable price optimization.

What is your production yield?

We maintain stable yield. Strict inspection is performed before shipment.

How to handle defective boards?

We support failure analysis, targeted rework and reasonable after-sales solutions.

Can you sign an NDA?

Yes. We sign NDA to protect customer drawings, BOM and project confidentiality.

Are your products RoHS compliant?

All finished products meet RoHS requirements for overseas export.

Do you provide full box build assembly service?

Yes, we offer one-stop box build assembly, including PCBA mounting, cable wiring, structural assembly and final packaging.

What kind of products can you assemble?

We assemble industrial controllers, water treatment equipment, smart home devices, New energy equipment ,lighting controller,alarm system,Garden care equipment,smart pet device,health monitoring device,out-door sports devices and electronic finished products.

Can you support low-to-medium volume box build?

Yes, both prototype trial assembly and mass box build are available.

Do you handle internal wiring and cable harness assembly?

We complete internal wiring, custom cable harness assembly and orderly routing.

Can you assemble plastic / metal housing?

Metal and plastic enclosure assembly, screw locking and fitting are supported.

Do you provide adhesive dispensing and thermal paste application?

Thermal paste dispensing, fixed gluing and insulation treatment are included.

Do you perform full functional testing after assembly?

Final functional testing, power-on testing and aging tests are conducted before shipment.

Can you customize burn-in aging test for finished units?

Customized aging cycles are available according to customer test standards.

How do you control defects during assembly?

Standard assembly SOP, inline inspection and final QC ensure stable quality.

Can you source structural parts, cables and housings?

We can source enclosures, connectors, wires and peripheral components.

Do you accept customer-supplied parts for assembly?

Yes, we provide assembly service with customer-provided parts.

Will alternative parts be used without confirmation?

No component substitution without customer’s written approval.

Can you do custom labeling, serial number printing?

Custom barcode, serial number labeling and product marking are supported.

Do you support neutral packaging or customized packing?

Neutral packing and customized gift box packaging are available.

Can you ship finished goods to overseas warehouses?

We support worldwide shipping and delivery to customer overseas warehouses.

Can you sign NDA for the whole assembly project?

NDA is available to protect your structural design and product information.

How to solve assembly quality problems after delivery?

We provide troubleshooting, rework and professional after-sales support.

Can you source housing, heatsink, cables and connectors?

We provide one-stop sourcing for enclosures, heat sinks, wires and mechanical parts.

Who is responsible for defective incoming parts?

We perform incoming QC. Defects from customer-supplied parts will be reported in advance.

Can you mix customer BOM and your sourced parts?

Mixed material supply is acceptable with clear incoming inspection.

Can you print serial number, QR code and barcode?

Custom SN, QR code and barcode labeling for unit traceability are supported.

Private label and custom packaging available?

Private labeling, neutral packing and customized customer packaging are offered.

Do you support anti-shock inner packaging?

EVA foam, anti-shock packaging protect finished units during overseas shipping.

Keep up to Date with The Latest News

News and articles related to Printed Circuit Board manufacturing, fabrication, and assembly. Helpful information from around the world.

Apr.26

The Lawn Mower PCB assembly The global lawn mower market is undergoing a profound shift toward electrification, intelligence, and low-carbon development. Driven by policy restrictions on gasoline engines, rising labor costs, and...

Apr.26

High-Performance Solar Charge Controller: Powered by Reliable PCBA & Full Box Build Solutions In the fast-growing renewable energy sector, solar charge controllers stand as an indispensable core component of off-grid solar systems, home solar power setups, RV solar installations, and industria...

Apr.26

Smart Household Waste Management: Market Trends & PCB Assembly Solutions Today, global household waste management is rapidly shifting toward intelligence, miniaturization, source reduction, and circular economy. Driven by strict environmental policies, urbanization, and up...