Can a Colored Protective Case order go below 500 pieces?

Answer: Yes, with the purge fee counted. Under 300 pieces it is charged per run and can exceed the unit cost.

Is amortizing tooling better than buying it outright?

Answer: Amortize when the first order is large and repeat volume uncertain; buy outright for a three-year plan.

Does a quoted IP67 include third-party testing?

Answer: Not by default. A factory record and a lab report are two documents; name the lab in the annex.

How do I claim on a shade mismatch within one lot?

Answer: Check for a tolerance ceiling and viewing conditions. With them, judge by Delta E; without them, you negotiate.

Should lead time be a total or in segments?

Answer: In segments, so you can point at the stage that slipped.

Colored Protective Case Purchasing: Six Numbers Behind a Quote

Quick answer: A Colored Protective Case quote stacks four cost blocks, then hides four boundaries behind them. Color minimums, tooling ownership, lead-time start dates and acceptance clauses decide whether two quotes compare at all. Pin the IP67 and MIL-STD-810H test items into the annex first.

What a Colored Protective Case Quote Is Made Of
Color Minimums: One Color per Run or Mixed Runs
Tooling Cost and Ownership: Who Pays, Who Keeps the Mold
Lead Time in Five Segments
Payment Terms and Six Quote Traps
FAQ

1. What a Colored Protective Case Quote Is Made Of

A Colored Protective Case is never priced as one figure. Four blocks stack up: material, molding, finishing, and packing with freight.

Material merges two accounts into one line: resin and masterbatch. Moving a shell from black to a light tone raises the titanium dioxide load, adding about 6 yuan per kilogram.

Certification is the block most often deleted. IP67 under IEC 60529 is a dust chamber plus immersion at one meter for 30 minutes, the case opened afterwards to check for ingress. The matching MIL-STD-810H methods are 507.5 humidity, 509.6 salt fog at 96 hours neutral and 516.8 shock at 40G peak over 18 drops. Name them in the agreement but not in the quote annex, and the factory ships on in-house sampling. A third-party run costs about 4,000 yuan.

Cost block	Priced by	Moves with	Often left out
Material	Weight times resin price	Wall thickness, ribs, masterbatch load	Masterbatch billed per color
Molding	Machine hour divided by output	Cavities, cycle, yield	Purge compound
Finishing	Labor minutes per station	Latch count, gasket, printing	Reassembly and rework
Packing	Volumetric weight	Stacking layers, carton size	Pallets and stretch film

2. Color Minimums: One Color per Run or Mixed Runs

Color is often treated as free. A dark-to-light switch means purging the barrel with compound equal to three times barrel capacity; a 250-tonne machine swallows about 25 kilograms per purge.

Colored Protective Case: closed black case from above at an angle, red latches either side of the finger-groove handle, hinge lugs on the rear rim

Minimums grow out of that purge. One color at 500 pieces is the usual threshold; below it the factory charges a purging fee or parks the order behind an identical color, turning 20 days into 45.

Single-color minimum: 500 pieces, or 300 with a purge fee
Purge compound: three times barrel capacity, about 25 kilograms
Combined-run wait: 7 to 21 days

3. Tooling Cost and Ownership: Who Pays, Who Keeps the Mold

Tooling follows cavity count: a single-cavity small case runs near 20,000 yuan, a four-cavity large one passes 80,000. What matters:

Milestones: 50 percent at kickoff, 50 percent after first-article approval
Ownership: invoice in the buyer name, contract granting inspection and removal
Life: P20 steel rated 80,000 shots, 718 steel rated 300,000
Storage: a mold left at the plant needs a written agreement with service intervals

Ownership is the expensive clause: when a buyer switches supplier, a mold that cannot travel must be cut again.

4. Lead Time in Five Segments

Lead time is not a number like 30 days; it is five segments with their own start conditions.

Colored Protective Case: black closed case from the side, flat lid, red latch at each front corner, curved handle, hinge lugs and corner ribs

Segment	Days	Starts when	Typical delay
Material prep	7	Shade code and deposit arrive	Masterbatch lands 3 to 5 days late
Molding	12	Resin and mold both on press	Color change holds the machine
Assembly	5	Shells pass full inspection	Latches or gaskets short
Packing	3	Assembly finished	Pallets missing
Inspection	2	Packing finished	Lab booking queue

The five segments add to 29 days on a clean run. Write segments into the contract, not a total.

Factories write 30 days after deposit, yet deposit and masterbatch arrive three to five days apart; start the clock at written shade confirmation.

5. Payment Terms and Six Quote Traps

Thirty percent deposit and seventy percent against a bill of lading copy is common. Terms of 30 days net add two to three percent, hidden in the price.

Six traps, by frequency:

Tooling excluded, added at signature
Masterbatch priced as black, actual color surcharged
Quoted on theoretical weight, overweight billed to the buyer
FOB and CIF mixed in one sheet
No validity date, so an old quote is repriced at new resin cost
Acceptance written as per sample, with no test items

Four close at inquiry stage: make the request a table and read blanks as excluded.

Conclusion

A Colored Protective Case purchase is not a price negotiation; it is four cost blocks plus four boundaries. Color sets the minimum quantity, tooling decides whether you can walk away. Pin the test items first, and the Colored Protective Case quotes you collect will finally compare.

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.