Reorder Point: When to Restock Your China Warehouse

Your reorder point should tell you when to buy more stock, before the units you can actually ship run out. For a store holding inventory in China, start with expected daily demand multiplied by the days from purchasing approval to warehouse release, then add a buffer. Check that trigger against both available stock and reliable incoming purchases. A supplier saying “in stock” is not the same as inspected inventory ready for your customer orders.

This guide is for sellers who reserve products in a China warehouse and ship individual parcels directly to customers. It helps you set a practical trigger for each variant, identify a delivery gap, and decide whether another purchase makes sense. It does not calculate ocean replenishment to an overseas warehouse, which needs its own timeline.

What does a reorder point actually tell you?

A reorder point is an inventory threshold that prompts a replenishment decision. It answers “When should I buy?” rather than “How many should I buy?” Those questions belong together, but combining them can hide expensive mistakes. A fast-moving product may need an early order without needing a huge order.

The basic calculation is straightforward: expected daily unit demand × replenishment lead time in days + safety stock. Shopify’s explanation of the formula uses these same inputs. Safety stock is extra inventory intended to absorb uncertainty; it cannot guarantee that every delay or demand spike will be covered.

Use one row per SKU, the code that identifies a particular sellable variant. A black small pouch and a blue large pouch should not share a trigger just because they sit on the same product page. If customers cannot accept one instead of the other, their stock is not interchangeable.

Count units you can release, not everything on the shelf

Begin with sellable units physically present, then subtract quantities already committed to customer orders. Keep damaged items, inspection holds, samples, and unapproved returns out of that figure. Otherwise, a stock report can look healthy while the next paid order has nothing available to ship.

Next, identify replenishment already on order. For the buying decision, an inventory position can combine available stock with confirmed incoming units, less any remaining unmet demand. Avoid subtracting the same customer commitment twice. Document whether your starting balance is gross physical stock or already net of allocations.

Incoming units need a separate expected release date. A purchase arriving after available inventory runs out cannot prevent that earlier gap, even if it makes the total look comfortable. Keep a dated view alongside the reorder point: today’s availability, demand until the next receipt, and the quantity expected to become usable then.

Ask your fulfillment partner how these states appear in its reports. UTS describes receiving, inspection, inventory preparation, and dispatch as separate steps in its fulfillment workflow. Agree which event makes stock available to orders rather than assuming every received carton is immediately ready.

Measure lead time until stock is ready to ship

For this model, the replenishment clock starts when you approve and fund the purchase. It ends when the warehouse releases the goods for fulfillment. Include supplier preparation, domestic transport, receiving, inspection, and any agreed labeling or bundling. Record waiting between those steps as well as active processing.

Customer parcel transit happens after dispatch and is a different clock. Adding that international delivery time to this warehouse replenishment calculation would mix two decisions. You still need a realistic customer delivery estimate, but it does not describe when replacement stock becomes available in China.

Use completed purchases to check the actual elapsed time. A supplier’s dispatch estimate alone omits the warehouse steps. When you have little history, request a dated plan and mark the estimate as provisional. Review the first receipts against it before relying on the figure for a larger campaign.

Custom packaging may be the slowest input. If a product is ready but its required mailer is not, your planned order cannot leave in the approved form. Confirm whether packaging must arrive first, whether an alternative is acceptable, and who can approve that change. Include the binding constraint in your reorder point assumptions.

Work through one variant before applying the formula widely

Suppose one variant sells eight units per day, replenishment takes twelve calendar days, and you choose a thirty-two-unit buffer. These are example assumptions, not a UTS quote or measured service level. The calculation is 8 × 12 + 32 = 128 units. Your reorder point is therefore 128 units for this variant under these conditions.

Now suppose there are 150 usable units in the warehouse and 30 are committed to paid orders. That leaves 120 available units. With no purchase already incoming, the inventory position is below the trigger. Review a replenishment order now; waiting for the physical count to reach 128 would overlook existing commitments.

Change the example: 100 additional units are confirmed for release in five days. The inventory position becomes 220, but you should still test the timing. At eight units per day, those five days consume 40 of the 120 available units. The expected receipt fits within that coverage, assuming demand and the release date hold.

If the same receipt is eighteen days away, the picture changes. Current availability covers only fifteen days at the assumed rate. The incoming purchase raises the total but leaves a potential gap. Contact the supplier or fulfillment partner about that specific gap before placing another order that could arrive just as late.

Choose a buffer you can explain and afford

A useful buffer reflects the uncertainty that matters for the variant. Look at late receipts, swings in daily orders, inspection failures, and missing packaging. Thirty-two extra units at eight units per day represent four days of expected demand. That is a planning choice, not evidence of a particular probability of avoiding stockouts.

Keep demand and supply risks separate when discussing changes. If sales rise, update expected demand. If replenishment slows, update lead time. Putting both changes inside a larger safety-stock number makes it harder to explain why the trigger moved or when it should move back.

For a short-lived seasonal variant, surplus units can become harder to sell after the occasion. Compare the possible missed margin with cash committed, markdown exposure, and any applicable storage or handling costs. A bigger buffer is not automatically the better decision. Sometimes a smaller campaign is the more affordable response.

Check the full purchasing and fulfillment cost before committing. The UTS pricing page separates handling and optional services from shipping. Confirm the charges and materials relevant to your plan in the quote; a stock calculation does not tell you the landed cost or profit on the next purchase.

Adjust for a campaign without treating a forecast as a fact

Before a planned autumn promotion, use recent daily orders as a baseline and write a separate campaign scenario. If advertising, price, or product visibility will change, last month’s average may not describe the next two weeks. Do not assume a holiday label alone proves that demand will rise.

Consider three daily-demand assumptions: the current baseline, a plausible increase, and a downside case. Run each through the same lead-time calculation. This shows how much of the purchase depends on growth that has not happened yet. For a new variant, comparable products can inform a hypothesis, but cannot establish its demand.

Your reorder point should be reviewed when the underlying conditions change. Watch orders after the campaign begins and compare receipts with their expected dates. A brief spike may not justify committing to another large batch; sustained demand and a confirmed supply plan provide stronger grounds.

Ask suppliers about their actual working dates and preparation capacity before relying on a calendar. Avoid promising customers that orders will arrive for an event until the selected parcel service and dispatch plan support that statement. Ordering inventory earlier reduces one risk but does not remove downstream delivery uncertainty.

Decide the purchase quantity separately

Reaching the trigger does not mean you should order the trigger quantity. Decide how far ahead you want the next purchase to cover demand, then account for available and confirmed incoming units. Check minimum quantities, carton multiples, cash available, and how long the product is likely to remain relevant.

Before another purchase, confirm the exact variant and approved specification. A cheaper replacement that changes size, material, or compatibility is a new decision, not an automatic refill. If you need sourcing help, use the purchasing service to discuss the specification and supplier options before approval.

Some stores deliberately buy in smaller batches while demand is uncertain. Others reserve stock once repeat sales justify the commitment. Compare the actual tradeoffs in your quote and workflow. Neither model makes sense solely because a spreadsheet cell has turned red.

Give your reorder point alert an owner and a next action

Keep a compact record containing SKU, available quantity, committed units, incoming quantity and release date, daily demand assumption, replenishment days, buffer, trigger, and last review date. Add the person responsible for responding. An alert without an owner is only a warning that everyone can overlook.

When a trigger fires, first reconcile stock and open purchases. Then confirm the supplier plan, evaluate any gap before the next receipt, and approve or decline a proposed quantity. Record the decision so another teammate does not place a duplicate order. If a receipt slips, reopen the timing check immediately.

Start with a few steady-selling variants and compare the plan with actual results. Keep the assumptions visible, use stock that is truly available, and revisit the numbers when demand or supply changes. A well-maintained reorder point gives you time to make a purchase decision while there are still options.