VANTHER TOPPER

Blog / E-liquid OEM/ODM

How to Write a Custom E-liquid Brief

A complete brief lets a manufacturer assess feasibility, prepare the right samples, and quote the correct configuration. State what is fixed, what is preferred, and what may change after sampling. One brief should cover the product formula, pack format, approval steps, destination requirements, and expected order scale.

03

Changhan Technology

E-liquid formulation and laboratory work
E-liquid OEM/ODM · B2B buyer guide

Key Takeaways

01

Name the destination market, sales channel, product format, and compatible device before choosing a formula.

02

Specify nicotine type and strength, VG/PG range, flavor direction, and the sensory result you want to approve.

03

Set sample-round limits, approval criteria, and the records needed for the exact product and destination.

04

Quote filling, packaging, artwork, and commercial volumes together to avoid an incomplete price or lead-time plan.

Discuss your project
Section 01

Define the market and device

Start with the commercial use case. The same flavor profile can need different nicotine, viscosity, pack, or document planning when the device, buyer group, and destination change.

01

Destination and route to market

List each intended country or region, whether the product is for retail, wholesale, online sale, or a closed distribution network, and the planned launch timing. Ask the manufacturer to confirm which destination-specific information, testing, labeling review, or notifications may be relevant to the exact product and order; requirements can differ by market and change over time.

02

Device and product format

Name the device type: refillable pod, tank, disposable-compatible system, or another platform. Include coil resistance or recommended power range if known, plus whether the liquid is freebase, nicotine salt, shortfill, or nicotine-free. Viscosity and flavor intensity should be matched to the intended hardware.

03

Target buyer and price position

Describe the intended user preference in practical terms: entry-level, mainstream, premium, high-strength, low-strength, or nicotine-free. Provide the target wholesale or shelf-price band if it is available. This helps balance ingredient choices, bottle format, decoration, and minimum order quantity.

Section 02

Specify the formula and sensory target

Do not rely on a flavor name alone. Give the factory measurable ranges and a simple description of what the finished liquid should taste and feel like.

01

Nicotine system and strength

State freebase or nicotine salt, the requested strength in mg/mL or %, and every strength variant required. Identify the nicotine source preference only when it is important to your specification. If several markets are planned, separate the strength matrix by destination rather than assuming one version suits all.

02

VG/PG ratio and viscosity

Give the target ratio or an acceptable range, such as 50/50 or 70/30, and note whether the formula must work in a particular pod or tank. A wider range can improve formulation options, but it should not conflict with the filling process or device performance expected by your customers.

03

Flavor direction

Describe the flavor family, key notes, sweetness level, cooling level, and any notes to avoid. For example: ripe mango with light peach, medium sweetness, no ice, clean finish, and no candy or floral note. Supply benchmark products or retained samples where permitted, but identify them as references rather than a request to copy.

04

Sensory acceptance criteria

Set the approval language in advance: aroma on opening, first inhale, exhale character, throat sensation, cooling, sweetness, aftertaste, and color expectation. Distinguish must-have points from preferences. Ask for blind-coded samples if you want the internal team to judge them without bias.

Section 03

Plan samples and product records

Agree on decision makers, change limits, and required records before development begins.

01

Sample-round plan

State how many development rounds you expect, the quantity per variant, who will approve them, and the feedback deadline. For each round, record the sample code, formula version, fill date, reviewer comments, and approved or rejected status. Consolidate feedback from your team into one response.

02

Change control

Specify which changes require your written approval, such as nicotine strength, flavor concentrate, VG/PG ratio, bottle, cap, label text, or carton artwork. Once a sample is signed off, keep a dated approval record and define how any later material or artwork change will be communicated.

03

Product and shipment records

Request the documents and batch information relevant to the product, order, and destination, such as a specification sheet, batch or lot reference, ingredient or safety information where applicable, and packing details. Confirm their format, language, and timing with the manufacturer and, where needed, your local compliance adviser or importer.

Section 04

Set the fill, pack, and order plan

Include filling, presentation, packing, and replenishment requirements in the commercial brief, not just formula costs.

01

Filling format

State bottle material, nominal fill volume, bottle shape, cap type, nozzle, tamper feature, and whether you need a retail-ready unit, bulk bottle, or drum supply. Include any tolerance, labeling area, and packing orientation requirements that affect filling or transport.

02

Packaging and artwork

List the unit label, carton, shrink wrap, display box, master carton, barcode, language versions, and required warnings or symbols for the intended destination. Supply editable artwork files, color references, dielines if available, and a clear approval owner. Artwork should be reviewed for the exact market before production.

03

Commercial quantities and forecast

Provide the trial quantity, first production order, mix by SKU and nicotine strength, and a rolling forecast for the next three to six months if available. Ask for minimum order quantities by formula, bottle, printed component, and packaging level, because these may not be the same.

04

Quote basis and delivery

Ask for a quote that separates formula, filling, packaging, development, testing or documentation if applicable, and logistics assumptions. State the desired Incoterm, delivery location, preferred shipment mode, production lead-time expectation, and whether split deliveries are acceptable.

Buyer Checklist

Custom E-liquid Brief Checklist

1

Destination countries, sales channels, launch date, and target buyer profile

2

Device platform, liquid format, nicotine system, and strength matrix

3

VG/PG target or range, flavor direction, sensory benchmarks, and notes to avoid

4

Sample quantities, number of rounds, approvers, decision deadline, and version-control method

5

Required product, batch, packing, and destination-specific records for the planned order

6

Bottle, fill volume, cap, label, carton, barcode, language, and artwork requirements

7

Trial volume, production volume by SKU, forecast, delivery term, and delivery destination

Buyer Questions

FAQs

Question 01

What should I send with a custom flavor request?

Send a concise flavor description, sweetness and cooling level, unwanted notes, target device, and any permitted benchmark samples or photos of the reference product.

Question 02

Can one approved sample be used for every market?

Not automatically. Nicotine strengths, label content, pack format, and supporting records may need to differ by destination and order configuration.

Question 03

When should artwork be finalized?

Finalize it after the bottle and packaging specifications are confirmed, then approve a final proof before the production run starts.

B2B Project Enquiry

Prepare your e-liquid manufacturing brief

Send your target market, device, formula preferences, packaging specification, and expected volumes for an initial feasibility review and sample plan.

Send your project brief