Production Capacity and Line Booking: Planning Around Peak Season
A factory's capacity is usually stated as an annual figure, which is the least useful number for planning a specific launch. What matters is the availability of a particular line during a particular week, and that is a scheduling question rather than a capability one. Brands that understand how the calendar works get better dates and fewer surprises.
Capacity Is Line Hours
A production line's output depends on the product. The same line might fill one hundred thousand units of a simple lotion in a shift and eight thousand units of a two-phase serum in a jar with a dropper. Changeover time, cleaning requirements, the number of fill heads, the pack format and the number of SKUs in the run all change the rate. So a capacity figure quoted in units implies assumptions about the product, and those assumptions should be stated.
The more precise unit is line hours, and the practical question is: how many line hours does this order consume, including changeover and cleaning?
Why Factories Book Slots
A factory with a hundred customers cannot start every order the day it arrives. Production is planned in blocks, and a block is allocated to a customer for a defined window. Once allocated, it is difficult to move without disrupting everyone else. That is why an order placed in good time gets a comfortable slot and a rushed one gets either a premium price or a date after the next available gap.
The Cosmetic Calendar
Demand for manufacturing is seasonal in ways that are easy to underestimate.
- The weeks before Lunar New Year. Manufacturing in mainland China slows or stops for a period around the new year, and the weeks immediately before it are the busiest of the year as customers try to ship before the break. The weeks after it take time to return to full output as staff return and supply chains restart.
- Northern hemisphere spring. Sun care, self-tan and lighter body products are produced in the first half of the year for the summer season, which loads the calendar from February onwards.
- Late summer and early autumn. Brands building stock for the fourth quarter and the holiday season book capacity at the same time, and gifting sets add packaging and assembly work on top of production.
- January to March. For many cosmetics brands this is a quieter manufacturing window, which can be an advantage for a launch that does not depend on a seasonal date.
What Consumes a Slot
Four things occupy line time beyond the filling itself:
- Changeover and cleaning. Moving from one product to another requires cleaning to a defined standard, and the time depends on the previous product and the sensitivity of the next one.
- Component readiness. Bulk can be made before packaging arrives, but filling cannot. A slot with missing components is wasted, and factories increasingly hold the slot only against a confirmed component delivery date.
- Quality release. Some plants require bulk release before filling, which inserts a waiting period into the schedule.
- Multi-SKU runs. A range of six shades with a changeover between each consumes substantially more line time than the same total volume in one shade.
How to Secure the Date You Want
The most effective step is early communication of an approximate volume and date, before the formula is final. Factories plan better with a forecast that may change than with a late confirmed order, and most will give a provisional hold. A deposit against the booking converts the hold into a commitment.
Beyond that, three practical moves help. Share a forecast for the following twelve months even when it is uncertain, because it allows the factory to plan raw material purchases around it. Be flexible on the week rather than the month, since a two-week window is much easier to slot than a single day. And avoid adding SKUs late, because the extra changeovers come out of the same allocation.
Where Peak Season Pricing Comes From
Prices sometimes rise for orders that must be produced in a peak week, and the reason is usually genuine: overtime, expedited raw material freight, or displacing another customer's slot. Whether the premium is acceptable is a commercial decision, but a brand should be able to see what it is paying for. A premium quoted without explanation is worth questioning.
Warning Signs in Capacity Claims
A factory that claims unlimited availability in its busiest month is either small enough not to have that problem or is not being accurate. Claims of very high output with a very short lead time should be tested against the number of lines, the shift pattern and the actual product. Ask how many lines the product will run on, what the changeover time is, and what the current booking lead time looks like for the coming quarter. A manufacturer operating under ISO 22716 and GMP systems will have production planning records that make these answers concrete. OEM COSMETICS ODM publishes booking lead times by category, plans around the Lunar New Year shutdown, and holds provisional slots against a forecast so a brand can lock a launch date before the formula is fully settled.
Talk to our team: WhatsApp +86 18709713948 · Email adon@oemcosmeticsodm.com · Website www.oemcosmeticsodm.com