Why do plastic trolley case manufacturer quotes vary so much?

Answer: Mostly wheels, handle and tooling: PU adds over 20 yuan, brands differ threefold, and amortisation falls from 210 to 14 yuan.

Is a 500 unit MOQ fixed?

Answer: Usually. Below 500 the tooling and changeover break the price; for a trial, ask about a shared mould with a colour change.

Does lead time start at order or sign-off?

Answer: At sign-off. The 30 to 35 days a plastic trolley case manufacturer quotes covers production after T2, so add 10 days for the model and 18 for T1.

Buy the tool or amortise it?

Answer: Buy it if the model stays for years; amortise it to test the market, with ownership and delisting terms written down.

What does an audit most often miss?

Answer: Compound source. Presses are visible, regrind ratio is not. Ask for batch records and pull one case for a drop test.

Plastic Trolley Case Manufacturer: Price, MOQ and Lead Time

Quick answer: A plastic trolley case manufacturer quotes one number, so split it into material, wheels, labour, tooling and margin. A 24 inch PP body at 500 units carries 42,000 yuan of tooling, or 84 yuan a unit; prototype 10 days, trial moulding 18, production 30 to 35.

How the Quotation Breaks Down
MOQ and Mould Amortisation
Prototype and Trial Moulding Milestones
Lead Time and Press Loading
Factory Audit and Pre-Shipment Inspection
FAQ

1. How the Quotation Breaks Down

A plastic trolley case manufacturer quotes a single figure, and the first job is to open it. Two 24 inch PP bodies at 78 and 96 yuan differ far more in wheels, handle and amortisation than in resin.

Cost item	Share	Basis
Body material	40 to 45%	4.2 kg net, 6% scrap
Wheels and handle	15 to 20%	per set, PP or PU
Moulding and assembly	12 to 16%	press cycle
Tooling	6 to 10%	mould cost over volume
Overhead and margin	10 to 14%	inspection, paperwork

The wheel set runs from 11 to 34 yuan: PU wears 0.4 mm over 8 km, PP 0.9 mm and marks tiles.

2. MOQ and Mould Amortisation

MOQ follows tooling: a 24 inch mould at 42,000 yuan is recovered over the first order, so 500 units is the threshold at 84 yuan a unit.

Plastic trolley case manufacturer: close-up of a black case corner, lid seam meeting the base, a moulded bumper over the joint, in side light

Volume	Tooling per unit	Unit price	Lead time
200	210 yuan	128 to 146 yuan	25 days
500	84 yuan	78 to 96 yuan	30 days
1000	42 yuan	66 to 82 yuan	35 days
3000	14 yuan	58 to 72 yuan	45 days

Changeover is the hidden charge: 4 to 6 hours on a 1000 tonne press, 6 to 8 on a 1250 tonne. Buy the tool and it travels with the buyer; amortise it and the contract needs a no-delisting clause.

3. Prototype and Trial Moulding Milestones

A plastic trolley case manufacturer prototypes twice: the 10-day model confirms parting line, latch feel and handle travel; the 18-day T1 sample shows sink, weld lines, warpage and fit. Approving the model before cutting steel saves more rework than the ten days costs.

Sign the T1 sample against a list: walls 2.8 to 3.2 mm over twelve points with a 2.6 mm minimum, lid gap 0.6 to 1.0 mm, handle at 5000 cycles with under 2 mm play, wheels at 20 kg over 8 km with axle rise under 15 °C.

Colour causes the arguments. One compound change moves ΔE to 1.2, so sign under D65 with five cases side by side and keep three plaques: maker, buyer, third party.

4. Lead Time and Press Loading

Lead time at a plastic trolley case manufacturer follows the press: a 1250 tonne machine runs a 24 inch body at 95 seconds a shot, about 750 units a day over two shifts, so 3000 units take four machine days and six with changeover.

Plastic trolley case manufacturer: black case open, liner cut for a laptop, charger and mouse, egg-crate foam in the lid, two latches, castors below

Milestone	Days	Deliverable
Model approval	10	appearance model
T1 trial	18	first shots, report
T2 rework	12	revised samples
Production	30 to 35	inspected lot

A 40HQ holds 640 assembled 24 inch cases. Peak season runs August to October, so fix order and colour by late July or a 500 unit lot stretches from 30 to 50 days.

5. Factory Audit and Pre-Shipment Inspection

An audit of a plastic trolley case manufacturer covers presses, moulds, compound and test gear. Press count above 1000 tonnes decides whether one-piece bodies over 24 inches are possible; mould records show cavity damage; regrind above 15 percent drops faster in a drop test.

Pre-shipment runs AQL 2.5 on lid gap, latch force, handle play, wheel rotation and colour, with three cases to a 1.2 m drop and salt spray on hardware for 48 hours at grade 9.

Conclusion

The hard part is not the discount but the arithmetic: cost lines make quotes comparable, amortisation turns MOQ into a calculation, and written milestones make lead time enforceable. Quoted on those terms, a plastic trolley case manufacturer hands over a sheet that adds up.

This article discusses only the container (case body) side of specifications and design intent, and does not cover any handling, loading or use of the contents.