Amber Glass Vials on G.P.I. Threads: 18-400 to 45-400
Amber glass vials on G.P.I. threads from 18-400 to 45-400, 14.2 ml to 480 ml — the open standard where any screw cap or dropper still fits.
What we make

Range & specifications
Amber glass vials on G.P.I. threads from 18-400 to 45-400, 14.2 ml at the small end and 480 ml at the large, which covers a dropper bottle, a syrup vial and a mouthwash bottle from one family. The large sizes include 230 and 480 ml on 28-400, plus 33-400, 38-400 and 45-400 wide mouth vials for powders and capsules.
Why it fits as one unit
Because G.P.I. is the open standard, a screw cap, a dropper or a pour ring can come from any supplier and still fit. Send the fill volume and the thread you already run, and we confirm vial, liner and cap together.
Certifications behind this line
Amber G.P.I.400 Glass Vials are produced under our ISO 9001:2015 quality and ISO 14001:2015 environmental systems. The company also holds an ISO 13485:2016 medical-device certificate covering its spray pump lines.
- ISO 9001:2015 — quality management · 117 26 Q 2822 R2 02
- ISO 14001:2015 — environmental management · 117 26 E 1567 R2 02
All three are issued by Shanghai Inger Certification (ICAS). Verify any number on the CNCA registry (cx.cnca.cn).
Patents behind the design
This line sits inside a wider portfolio of 29 valid patents (invention and utility model) across spray pumps, lotion pumps, foam pumps and aerosol cans. Where a product family carries its own design patent, it is listed on the relevant page.
Every patent number links to its Google Patents record — assignee, abstract, claims, drawings and legal status — so a buyer can confirm ownership without asking for a certificate.
Frequently asked questions
What thread range is available?
G.P.I. 18-400 to 45-400, covering 14.2 ml to 480 ml.
Why choose G.P.I. threads?
They are an open standard, so a screw cap, dropper or pour ring from any supplier still fits.
Related reading
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See the full specification table and matched options, or send your requirements for a quotation.
amber glass vials — full specifications Request a quote