What goes wrong when a custom protective case quotation omits the revision?

Answer: No fixed basis; a latch seat 3 mm out cannot assemble.

Who sets the 1.5 ΔE limit?

Answer: The buyer, by application: 1.0 to 1.5 for visible parts, 2.0 for structural.

Should tool cost be separate or amortised?

Answer: Separate, so ownership and the 24-month storage term can be written down.

Can the AQL clause simply quote the standard?

Answer: No. Name the level, code letter, AQL per class.

How much does the pallet clause move the price?

Answer: Four to seven percent. Mark pallet, film, strapping and fumigation included or not.

Custom Protective Case Quotation: Seven Spec Clauses

Quick answer: A custom protective case quotation needs seven testable clauses: drawing revision, resin grade and regrind cap, colour chip and ΔE limit, wall and load, packing, tool ownership, and AQL acceptance. Without them a price is only a number.

Why a Custom Protective Case Quotation Must List Every Clause
Drawing Number and Revision Lock the Price Basis
Resin Colour and Wall Thickness Clauses
Packing Method and Tooling Ownership
Intellectual Property and AQL Acceptance
FAQ

1. Why a Custom Protective Case Quotation Must List Every Clause

Most custom protective case quotations arrive as one page: material PP, price 128, lead time 25 days, rest built to drawing. It hides differences at comparison and delivers them at the dock: colour two steps off, a pallet 45 more each.

A clause earns its place only if an inspector can pass or fail it with a caliper or sampling table. Good appearance fails; a 1.5 ΔE shift passes it.

Clause	What it must state	What breaks without it
Drawing and revision	Number, letter, issue date	Old revision moulded
Resin grade	Grade, supplier, regrind cap	Cold-drop cracks
Colour	Chip code, light source, ΔE cap	Visible batch shift
Size and load	Tolerances, wall range, method	Stack collapse
Packing	Inner wrap, carton count, pallet	Pallet billed later
Tooling	Cost, ownership, storage term	Tool stuck in plant
IP and acceptance	Rights, secrecy, AQL	No claim basis

2. Drawing Number and Revision Lock the Price Basis

The drawing number sits on line one and is the first thing dropped. One pattern often changes twice in six months: 15 mm taller, then a double-row latch seat. Two revisions, 8 to 12 percent apart.

Custom Protective Case Quotation: white case flat on a galvanised shelf, two white latches and a folding handle, scuffed corner, warehouse aisle behind

Write it with a letter, JZ-PC-2418 Rev.C, plus issue date and page count; changes travel by ECN, repricing fixed at five working days. If Rev.C altered the latch insert, that tool cost gets its own line; first-article inspection cites the quotation, not the wall copy.

3. Resin Colour and Wall Thickness Clauses

A resin clause in a custom protective case quotation names grade, supplier and regrind cap. PP alone says little: homopolymer and copolymer differ two-fold in low-temperature impact. A 15 percent regrind ceiling is common; above it cracking at minus 20 °C rises.

Colour rests on a chip: RAL 7035 or Pantone 418C, signed before the tool is cut, three chips kept by buyer, moulder and tool room, judged under D65 at ΔE 1.0 in a batch, 2.0 between.

Clause	Example wording	Checked by
Resin	PP copolymer K8003, regrind 15% max	Feeding record
Colour	RAL 7035, batch ΔE 1.0, lot ΔE 2.0	Spectrophotometer
Wall	2.6 to 3.0 mm at midpoints and corners	Ultrasonic gauge

Size is more than three numbers. Outers carry 600 x 400 x 230 mm plus or minus 2 mm; wall reads at four midpoints; load is 80 kg static for 24 hours, read after unloading.

4. Packing Method and Tooling Ownership

Packing in a custom protective case quotation answers four things: inner wrap, units per carton, pallet, fumigation. A workable line: PE bag each, 20 mm pearl foam on corners, five-ply carton of four cases, 1.2 x 1.0 m pallet of 16 cartons, three film wraps, two straps.

Custom Protective Case Quotation: gloved worker pressing grey foam into a red case on a bench, red and black cases stacked left, wrapped pallets behind

Tooling decides the exit two years later, so the custom protective case quotation lists cost separately with amount, payment stage and owner. Where the buyer owns it, the buyer code is engraved on the side, the moulder stores it 24 months, and 60 days notice releases it.

5. Intellectual Property and AQL Acceptance

In a custom protective case quotation, drawings stay with the buyer; the moulder gets a licence for this order only. Secrecy runs three years; a buyer tool may not run a third party's product.

Acceptance cites GB/T 2828.1 with inspection level, sampling plan and an AQL per class; without examples two shifts grade a case two ways. Leak testing at 20 kPa held 90 seconds without decay is a major defect. Lots of 501 to 1200 pieces take code letter J and a sample of 80.

Class	Examples	AQL	Disposition
Critical	Seal breakthrough, broken hinge	0	Lot rejected
Major	Latch not seating, leak failure	1.0	Return or sort
Minor	Sink marks, flash, colour off	2.5	Concession

Conclusion

These clauses turn agreement into steps an inspector can repeat. The drawing fixes revision, resin and ΔE fix appearance, wall and load fix structure, packing and tooling fix cost. Written in full, a custom protective case quotation carries its own evidence.

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.