Flex-Stock · Vendor Managed Inventory
We hold your packaging stock and ship per call-off, on your production schedule.
Flex-Stock is JMP's vendor-managed inventory (VMI) program for automotive suppliers: we make your packaging in advance, hold it as a buffer in our warehouse, and deliver exactly when your line needs it.
In short: we hold the stock
Vendor managed inventory (VMI) is a scheme where the supplier — not you — manages your stock: producing ahead, holding a buffer, and replenishing as you use it. For packaging, that means we produce and hold your carton box and polybag stock in advance, then ship it per call-off exactly when your line needs it — so you're not tying up floor space on bulk stock, and you're not stopping the line because packaging arrived late. JMP's packaging VMI program is called Flex-Stock.
Read more: what is VMI for packaging.
How Flex-Stock works
Four steps. Packaging stock becomes our job; your line never waits.
- 1 Produce ahead
- 2 Buffer stock in JMP warehouse
- 3 Call-off on schedule
- 4 Your production line
Why automotive suppliers use packaging VMI
Your floor stays clear
The packaging buffer sits in our warehouse, not on your production floor. You pull what you need.
The line keeps running
Packaging is ready before you need it. No line waiting on late cartons or polybags.
One vendor, two packagings
Carton box and polybag under one QC standard and one delivery schedule — not two suppliers pointing fingers.
Packaging we manage in this program
Corrugated carton box →
RSC, die-cut, custom flute & sizing, from 500 pcs.
PE/PP polybag →
Automotive-component polybags, thickness matched to your part.
Learn more: automotive & VMI articles · about JMP
What does holding your own packaging stock cost?
Holding packaging stock rarely reads as a cost — no invoice arrives for it each month. The warehouse space and the cash sitting in a stack of cartons are paid for all the same. Enter your own numbers below; everything is calculated in your browser and nothing is sent anywhere.
Estimated cost of holding it yourself
- Warehouse space
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- Capital tied up
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- Total per month
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- Total per year
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Fill in the numbers above to see the result.
This result comes purely from the numbers you entered — it is not a quote and not a JMP estimate. What Flex-Stock offers is simple: the buffer stock moves into our warehouse, so the cost above stops being yours.
The method in full: Flex-Stock vs holding your own stock — warehouse cost
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Our buffer warehouse
Your packaging buffer, held in our warehouse.
We produce ahead and hold the buffer in our warehouse — you pull per call-off on your production schedule, and your floor space stays free.
- Produced ahead, held in our warehouse
- Pulled per call-off on your line schedule
- Warehouse load and stockout risk shift to us
Before you decide
Three questions that almost always come first: what holding your own stock actually costs, when VMI is the wrong answer, and what automotive packaging demands that ordinary packaging does not.
Flex-Stock vs holding your own stock: costing packaging warehousing Holding packaging stock yourself looks cheaper — until you cost the warehouse space, the cash tied up, and the changeover risk. How to compare it against a VMI program. 
Packaging VMI (Vendor Managed Inventory): how it works, when it doesn't Your supplier holds the packaging buffer, you call it off against your line. How it works, what it asks of you, and when VMI is the wrong answer. 
The complete guide to automotive packaging Why automotive packaging is different: many SKUs, batch traceability, and the risk of a stopped line. Packaging types, PO specs, and how to pick a supplier that can actually deliver. 
Still wondering about something?
Check the frequently asked questions.
MOQ, custom, flute, polybag, and the Flex-Stock program — answered short and direct.