Why Chinese Suppliers Raise Prices After Quoting: Quote Validity and Raw Material Costs

You requested a quotation in one month, took a few weeks to arrange the money and the import paperwork, and when you finally confirm the order the supplier writes back: “Sorry, material cost has gone up, the new price is higher.” It is one of the most common frustrations Bangladeshi importers report when buying from China, and it often feels like a negotiation trick. Sometimes it is. Often, though, it reflects how Chinese factories actually price products that depend on volatile raw materials.

Understanding the mechanics behind price revisions will help you tell the difference between a genuine cost change and opportunism, and will help you write quotations and contracts that make surprises less likely.

Why Chinese quotes carry a validity period

Most formal quotations from Chinese suppliers state a validity period, and many proforma invoices repeat it. The reason is that a large share of a product’s cost can be raw material that the factory has not yet bought. A cable manufacturer quoting you today will buy copper later, at whatever the market price is then. A steel shelving factory will buy coil or sheet after you confirm. A plastics factory will buy resin pellets whose price follows oil and petrochemical markets.

When a factory quotes, it is effectively estimating what those materials will cost when it actually purchases them. A validity period is its way of limiting how long it carries that risk. Once the period expires, the quote is no longer a commitment — it becomes a reference. Importers who treat an old quotation as a fixed price are often the ones who feel misled.

Which products are most exposed to raw material swings

Not every product carries the same risk. The higher the raw material share of the final price, and the more that material is traded on open markets, the more likely you are to see a revision. Products that commonly fall into this group include:

• Electrical cables and wiring — copper and aluminium conductors make up much of the cost.
• Steel products — racking, shelving, fasteners, pipes, structural parts, wire mesh.
• Plastic goods — household items, containers, packaging, where resin is the main input.
• Paper and corrugated packaging — pulp and recycled fibre prices move the cost of cartons and paper products.
• Solar panels and batteries — components whose input costs have historically moved sharply.

By contrast, products where labour, design, tooling or brand make up most of the price — complex electronics assembly, finished garments with heavy trim work, branded machinery — tend to have more stable pricing within a short window. That does not mean they never change, but the trigger is usually something else, such as a component shortage or exchange rate movement.

Other legitimate reasons a price can change

Raw material is the headline reason, but not the only one. Before you push back, check whether any of these apply:

• Exchange rate. Factories pay workers and local suppliers in RMB but quote you in USD. A significant move in the USD/RMB rate changes their margin. Our article on the USD rate and your import cost covers the Bangladesh side of the same issue.
• Changed specification. Small changes you requested — a thicker gauge, a different colour, extra packaging — can have a real cost even if they look minor.
• Changed quantity. A quote built for one quantity may not hold for a smaller confirmed order, especially if it changes how material is bought or how lines are set up. See our guide on MOQ for why.
• Export tax treatment. Changes to China’s export VAT rebate for a product category can affect factory pricing; our explainer on the export VAT rebate covers how.
• Changed Incoterm. Moving from EXW to FOB, for example, shifts inland trucking and export handling onto the supplier.

How to tell a genuine revision from a pressure tactic

A genuine cost-based revision usually has a few recognisable features. The supplier can point to which material moved, the increase is roughly proportional to that material’s share of the product, and the timing lines up with the expiry of the quote. A pressure tactic tends to look different: an increase announced only after you have paid a deposit, a vague reason with no breakdown, or a revision that coincides with you revealing a tight deadline.

It is reasonable to ask the supplier to explain the change. A useful question is simply: “Which component or material changed, and by how much does that affect the unit cost?” Serious factories can usually give a rough breakdown. You can also cross-check by asking one or two other suppliers for a fresh quote on the same specification — our guide on comparing quotes from multiple Chinese suppliers explains how to make that comparison fair.

Contract clauses that reduce the risk

You cannot remove commodity risk, but you can decide in advance how it is shared. Useful approaches include:

• Lock the price at deposit. State in the proforma invoice or contract that the price is fixed once the deposit is received, regardless of later material movements. Many factories accept this for a reasonable production window, because they buy material shortly after the deposit.
• Confirm within the validity period. If your LC or financing takes time, plan the confirmation date backwards from the quote expiry rather than hoping the supplier will be flexible.
• Use an indexed clause for long contracts. For repeat orders over many months, some buyers agree a formula linking price to a published metal or resin index. It is fairer to both sides, but it needs careful wording.
• Define what is included. Packaging, labels, testing and inland delivery should be written into the quote so they cannot be added later as separate “cost increases.”

If you pay by letter of credit, remember that the LC amount and unit price must match the final invoice, so a late price change can mean amending the LC. Our guide to the proforma invoice covers what to lock down before you open one.

Mistakes that make price surprises worse

• Sitting on a quote. Using a quote that is several months old as the basis for your budget almost guarantees a gap.
• Paying a deposit without a fixed price. Once money moves, your negotiating position weakens. Agree the final price first.
• Accepting a revision without written confirmation. If you agree a new price on a call, make sure the revised proforma invoice reflects it exactly, including quantity and specification.
• Forgetting the knock-on effect. A higher unit price raises the customs assessable value and therefore the duties and taxes you pay in Bangladesh. Re-check your total landed cost before accepting.

Planning your purchase timeline around quote validity

The practical lesson is that your internal process — arranging funds, opening an LC, getting any required permits — should be lined up before you ask for final quotations, not after. Use early quotes for budgeting, but request a fresh, dated quote when you are genuinely ready to confirm, and confirm promptly. For seasonal products, our monthly import planning calendar helps you start that process early enough.

A sourcing agent who speaks with factories daily can often tell you whether a quoted increase is in line with what other suppliers are doing, and can negotiate the wording of price-lock clauses on your behalf. That is part of what our China team handles for clients.

Every product, factory and shipment is different, so we do not publish fixed fees or timelines for sourcing and price negotiation. Tell us what you are importing and ask us for a quote built around your needs. You can also browse our full list of services, see how our China sourcing and buying agent service works, or explore products in our shop.