This guide covers: written contract terms and Incoterms selection (POINT 01), T/T payment structures and FX risk management (POINT 02), freight mode selection and PCB-specific packaging requirements (POINT 03), customs classification and required import documents (POINT 04), and communication discipline with Chinese manufacturers (POINT 05).
Verbal agreements with overseas suppliers, even well-intentioned ones, create ambiguity that surfaces at the worst possible moment — when something goes wrong. Every commercial term that matters to you should be documented in writing before the first order is placed.
What to Agree in Writing Before the First Order
Price and currency — USD is standard for China-origin PCBs. State the currency explicitly and agree how exchange rate risk is handled if pricing is locked over a multi-month contract.
Delivery schedule and lead time — State the production lead time in business days from order confirmation, and the date by which goods must ship. Distinguish between "lead time to ready" and "lead time to delivery at your door."
Minimum order quantity (MOQ) — Agree the MOQ and the price breaks for higher volumes. Confirm what happens if you need a quantity below MOQ urgently.
Quality standard — Specify IPC Class 2 (commercial) or IPC Class 3 (high-reliability) as the applicable workmanship standard. Do not leave this unspecified.
Defect and rejection policy — What happens when boards fail incoming inspection? Agree the process for replacement, credit, or refund — including who pays return freight — before defects occur, not after.
Payment terms and schedule — Deposit percentage, balance trigger (before shipment vs after delivery), and bank details to be used for remittance.
NDA (Non-Disclosure Agreement) — For any design that represents proprietary IP, execute an NDA before sharing Gerber files, BOMs, or stackup specifications.
Incoterms: Four Terms You Need to Know
EXW
Ex Works
Seller: Makes goods available at their facility. That is all.
Buyer: Arranges and pays for all transport, export clearance, insurance, and import customs.
For experienced importers only
FOB
Free On Board
Seller: Delivers goods to the named export port and clears export customs.
Buyer: Pays for international freight, insurance, and import customs from the port of loading.
Common for established buyers
CIF
Cost, Insurance & Freight
Seller: Pays for freight and minimum insurance to the named destination port. Handles export clearance.
Buyer: Handles import customs clearance and pays duties, taxes, and delivery from destination port.
Recommended for first orders
DDP
Delivered Duty Paid
Seller: Bears all costs and risks to the named delivery location including import duties and customs clearance.
Buyer: Receives goods at door. Confirm import consumption tax (e.g. JCT) allocation in writing.
Maximum simplicity for buyer
For first-time cross-border PCB orders: CIF or DDP reduces your operational burden significantly — the manufacturer or their freight agent handles international transport and freight insurance. DDP is the most straightforward option if the manufacturer can offer it, but confirm in writing whether import consumption tax (Japan: 10% JCT) is included or remains your responsibility. This single detail affects your landed cost calculation.
Telegraphic Transfer (T/T, or wire transfer) is the standard payment method for cross-border PCB orders. Understanding the typical payment structure — and how it evolves as the supplier relationship matures — helps you negotiate terms that protect both parties.
New Supplier — First Orders
30% deposit / 70% before shipment
The most common structure for new supplier relationships. The deposit signals genuine intent; the balance due before shipment ensures the manufacturer is paid before goods leave their control. Risk is shared: you are exposed on the deposit, the manufacturer is exposed until the balance arrives.
Some manufacturers request 50/50. This is negotiable; 30/70 is the more common market standard for first orders at production volume.
Established Relationship
NET 30 or NET 45 after shipment
Once you have a track record of on-time payment over several orders, most manufacturers will negotiate open account terms — typically NET30 (full payment 30 days after goods ship) or NET45. This removes the pre-payment constraint and aligns payment timing with your own cash flow.
Moving to open account terms typically requires 3–5 successful transactions under deposit terms. Raise it proactively; manufacturers rarely initiate this conversation.
Managing Foreign Exchange Exposure
USD-denominated pricing is standard for China-origin PCBs. This creates FX exposure when you pay in JPY or EUR. Three practical approaches:
Forward exchange contracts: Lock a USD/JPY (or USD/EUR) rate with your bank for a future payment date. Eliminates rate uncertainty but requires committing to a payment date. Appropriate when order volume and timing are predictable.
Short quote validity periods: Request that quotes be valid for 30 days or fewer. This limits the window during which exchange rate movements can erode the margin you priced at. Most manufacturers will accept 30-day quote validity as standard.
Rate revision trigger clause: For longer-term supply agreements, include a clause that triggers a price renegotiation if the USD/local currency rate moves beyond a defined threshold (e.g., ±5%). This is reasonable and professional — suppliers in the semiconductor and components space use this routinely.
⚠ Bank detail verification before every transfer: Business email compromise (BEC) fraud — where an attacker intercepts supplier communications and substitutes fraudulent bank details — is a real and growing threat in cross-border procurement. Before every first transfer to a supplier, and whenever bank details are updated, verify the SWIFT/BIC code and account number directly with your supplier contact through a separate channel (phone call or video call) — not by replying to the email that contained the bank details.
Choosing the Right Freight Mode
📦
Courier (DHL / FedEx / UPS)
2–4 days China → Japan
Higher cost per kg · door-to-door
Best for prototypes, small lots, urgent replenishment, and any shipment under ~30 kg where speed justifies the premium. Full tracking visibility throughout transit.
✈️
Air Freight
3–5 days + customs clearance
Medium cost · requires forwarder
Best for mid-volume production lots (30–500 kg) where speed is important but courier cost is prohibitive. Requires a freight forwarder to handle airline booking and import clearance.
🚢
Sea Freight (FCL/LCL)
10–18 days + port handling
Lowest cost per kg
Best for large production volumes (500+ kg / full-pallet or container loads) where transit time is planned for. LCL (less-than-container load) consolidation available for smaller shipments that do not justify a dedicated container.
PCB-Specific Packaging Requirements
PCBs are vulnerable to moisture, oxidation, electrostatic discharge, and physical deformation. Specifying packaging requirements in your purchase order — not as a verbal instruction — is the only way to ensure compliance across different shipments and production batches.
💧Vacuum-sealed moisture barrier bags with desiccant
Each panel or stack of boards should be individually vacuum-sealed in a moisture barrier bag (IPC/JEDEC J-STD-033 compliant) with silica gel desiccant inside. Include a Humidity Indicator Card (HIC) for high-layer-count boards or fine-pitch ENIG finishes. Moisture ingress causes oxidation and delamination that may not be visible on delivery but fails during reflow.
⚡ESD-protective (anti-static) inner wrapping
Boards must be wrapped in anti-static material, not regular bubble wrap or foam. Pink/black anti-static foam or ESD-rated bags are appropriate. Standard polyethylene bubble wrap is a triboelectric charge generator — using it on PCBs with exposed pads or surface components creates ESD risk.
📦Outer carton with impact cushioning
The outer shipping carton should include adequate cushioning — air pillows, foam pads, or bubble wrap — between the inner packages and the box walls. Boards that shift and impact during transit can warp, crack, or suffer edge damage. Specify minimum wall thickness for the corrugated outer carton if this matters for your boards.
🏷️Clear labelling per package
Each inner package should be labelled with: board name, revision, quantity, lot number, and date of manufacture. This is essential for traceability during incoming inspection and for lot segregation if a quality issue is later discovered affecting a specific production batch.
HS Classification and Duty Rates
| Board type | HS Code | Japan MFN tariff | Import Consumption Tax (JCT) | Notes |
|---|
Bare PCBs
(unassembled) |
8534.00 |
0% |
10% on CIF value |
Standard classification for manufactured substrates with no components. MFN rate is 0% under Japan's tariff schedule. |
Assembled PCBAs
(with components) |
8534 or
Chapter 85
Verify with broker |
Varies by function |
10% on CIF value |
Classification depends on the function of the completed assembly. Misclassification carries penalty risk — confirm with a licensed customs broker before importing assembled boards. |
Import Consumption Tax is always due: Even at a 0% import duty rate, Japan's Consumption Tax (JCT at 10%) applies to all imports. It is calculated on the CIF value of the shipment (cost + insurance + freight). This means a shipment with a CIF value of ¥500,000 incurs ¥50,000 in JCT regardless of the zero tariff rate. Include this in your landed cost calculation for every order — it is frequently omitted by buyers new to import procurement.
Required Import Documents
Commercial Invoice
States seller, buyer, HS code, board description, quantity, unit price, and total value in the transaction currency. Must match the actual transaction value — undervaluation is illegal and causes customs delays if challenged.
Packing List
Lists contents of each carton with dimensions, gross weight, and net weight. Customs uses this to verify the invoice against physical cargo. Discrepancies between the invoice and packing list cause holds.
B/L or Air Waybill
Bill of Lading (sea freight) or Air Waybill (air/courier) — the transport contract and title document. The customs broker needs this to identify and release the shipment. For courier shipments, the tracking number and AWB are typically sufficient.
Certificate of Origin
Required only when claiming preferential tariff treatment under a trade agreement (RCEP, EPA, etc.). For PCBs at 0% MFN duty, a CoO is generally not needed unless you are specifically claiming an additional preferential rate.
⚠ Document consistency is non-negotiable: The product description, HS code, quantity, and declared value must match exactly across the Commercial Invoice, Packing List, and transport document. A discrepancy of even one unit — or a vague product description on the invoice — will trigger a customs query, delay the shipment, and may result in examination fees. Review all documents from the manufacturer before goods depart, not after they arrive at your port.
The most common root cause of cross-border PCB quality failures is not a technical process problem at the factory — it is a specification that was transmitted ambiguously and received differently than intended. Communication discipline is not a soft concern; it is the most direct lever you have on outcome quality.
📧
Email — the written record
Use email for everything that matters
- All technical specifications and drawing revisions
- Order confirmations and price agreements
- Quality decisions — approved deviations, rejection notices
- Delivery schedule agreements and changes
- Any instruction that, if misunderstood, would cause a production error
💬
WeChat — for speed and access
Use WeChat for day-to-day liaison
- Status updates and quick clarification questions
- Notifying the supplier to check an email you just sent
- Time-sensitive exchanges where email latency creates problems
- Building relationship contact outside of business hours
Three Communication Practices That Prevent Expensive Mistakes
Write specifications in English, not verbal summaries. Chinese manufacturers work primarily with English-language technical documentation. A specification written in English and attached to the purchase order is unambiguous. A verbal description relayed through a sales contact — even a well-intentioned one — introduces interpretation error at every step of the chain.
Follow up every non-trivial WeChat exchange with an email summary. If you agreed a delivery date, approved a material substitution, or confirmed a design revision on WeChat, send a confirmatory email within the same business day. The sentence "Following our conversation today, we confirm: [X]" takes 30 seconds to write and creates a written record that WeChat history does not reliably provide in a dispute.
Start small, then scale. The first order with a new overseas supplier should be a small batch — even if the relationship appears promising and the price is attractive. Running a controlled first order confirms that the entire operational chain works — data submission, production, packaging, customs, payment — before you commit volume that creates real exposure if something breaks.
Language of technical documents: Prepare all fabrication notes, stackup specifications, and inspection criteria in English. If a Chinese manufacturer's sales team responds in Chinese or inserts Chinese-language notes into documents, request that the English version is the binding specification and ensure the Chinese content does not contradict it. English-language fabrication notes attached directly to the purchase order are the most reliable way to ensure what you specified is what gets manufactured.
Summary
Cross-border PCB procurement is operationally manageable when each function is approached systematically. Get commercial terms in writing before the first order. Choose Incoterms appropriate to your experience level — CIF or DDP for first-time importers. Structure payment to protect both parties. Specify packaging requirements explicitly. Build customs costs (including import consumption tax) into your landed cost calculation from the start. And treat email as the official record for every specification and agreement — WeChat is for speed, email is for substance. Run your first order at low volume, confirm the operational chain end-to-end, then scale.