Bulk stock for OEM customization, no pre-set fixed specification
1
4.5
4.5
Single vial of essence liquid
1
4.5
4.5
2.0ml per vial
1
20
20
Single vial per unit
1
4.5
4.5
Bulk stock for OEM customization
1
15
15
Per vial
1
20
20
Single vial for mesotherapy skin care
1
18
18
Per piece
1
15
15
Prices are the published unit prices in US dollars for the listed specification. Where a specification appears with a wide range, the spread almost always reflects pack size, concentration or the unit of sale rather than a pure price difference — open the individual listings before drawing a conclusion.
What to check before you order
Confirm the unit. The same specification may be sold per vial, per box, per pair or per set. Convert every quotation to a single unit before comparing.
Fix the concentration or fill. Where a specification lists options (for example two fill weights), state in writing which one your order refers to — this is the single most common source of a shipment that technically matches the product name but not the purchase order.
Ask for the documentation. A certificate of analysis and test report tied to the lot number is what lets you verify conformance on arrival.
Sample a new specification. If you are moving to a specification you have not bought before, order a sample lot first; the cost is small relative to the risk of a production quantity that cannot be used.
Selection logic that generally holds
For a first order, the lowest price is rarely the correct basis for a decision. A mid-range specification from a supplier who can state a consistent fill weight, provide documentation and hold the specification over repeat orders is normally the lower-risk choice, and it usually turns out cheaper once rework, claims or a failed batch are priced in. Reserve the lowest-priced small-pack listings for trial quantities where you are buying specifically to evaluate, not to consume.