Product Introduction:


We supply 2 types of 28mm food-grade PET preforms: short neck preforms and high neck preforms. The weight tolerance is ±0.3‑0.5g. The length of preforms varies with gram weight. Custom color by Pantone number is available for injection molding. New molds can be developed for special requirements.
28mm Short Neck Preform
Designed for blowing mineral water and non-carbonated beverage bottles. High precision thread ensures good cap matching. Made of low acetaldehyde food-grade PET raw material.
| 28 Short Neck | Neck Type | Weight | Length | Carton Size | Pcs/Carton |
|---|---|---|---|---|---|
| 28 Short Neck | Short Neck | 10g | 7.5cm | 533538cm | 1500 pcs/carton |
| Short Neck | 15.5g | 9cm | 49.53828cm | 1092 pcs/carton (interlocked packing) | |
| Short Neck | 17.5g | 9cm | 5336.537.5cm | 1000 pcs/carton | |
| Short Neck | 20.5g | 10cm | 5336.537.5cm | 860 pcs/carton | |
| Short Neck | 22.5g | 10cm | 5336.537.5cm | 860 pcs/carton | |
| Short Neck | 25g | 11cm | 5336.537.5cm | 720 pcs/carton | |
| Short Neck | 28g | 11cm | 5333.533cm | 600 pcs/carton (upright packing) | |
| Short Neck | 30g | 12.8cm | 5333.533cm | 512 pcs/carton | |
| Short Neck | 47g | 14.5cm | 5333.533cm | 448 pcs/carton | |
| Short Neck | 52g | 14.5cm | 5333.533cm | 428 pcs/carton |
28mm High Neck Preform
Suitable for carbonated drinks, sparkling water and still water. Reinforced neck thread to withstand internal pressure from carbonation, compatible with pressure-resistant caps. Made of low acetaldehyde food-grade PET raw material.
| 28mm High Neck | Neck Type | Weight | Length | Carton Size | Pcs/Carton |
|---|---|---|---|---|---|
| 28 High Neck | High Neck | 14g | 8.3cm | 5336.537.5cm | 1250 pcs/carton |
| High Neck | 15g | 8.3cm | 5336.537.5cm | 1250 pcs/carton | |
| High Neck | 21g | 10cm | 5336.537.5cm | 860 pcs/carton | |
| High Neck | 30g | 12.8cm | 5333.533cm | 512 pcs/carton | |
| High Neck | 32g | 12.8cm | 5333.533cm | 512 pcs/carton | |
| High Neck | 52g | 15cm | 5333.533cm | 428 pcs/carton | |
| High Neck | 55g | 16.4cm | 493828cm | 370 pcs/carton |
Download Full Detailed Specifications
The above is a brief overview of our production capacity. Complete data including models, weights, dimensions and carton packing quantities are available in the full specification sheet for download via the button below.
The file is categorized by product line with clear tables, which can be exported as PDF for catalog sharing and quotation reference with clients.
Product Advantages
- Food‑grade raw material: Made of qualified food‑contact resin, safe for food and supplement packing, compliant with international packaging standards.
- Stable molding performance: Uniform wall thickness, low defect rate, high yield during blow‑molding processing.
- Customizable specifications: Support multiple sizes, neck finishes and material options (PET / HDPE) to match your bottle project requirements.
- Consistent batch quality: Strict production control, stable performance across different production batches.
- Cost‑effective bulk supply: Competitive bulk pricing for large‑volume orders, helping buyers lower overall production cost.
- Good compatibility: Fits mainstream blow‑molding equipment, easy for factory mass‑manufacturing.
Our PET Preform and Plastic Bottle Sample Showroom
Our factory showroom displays a wide range of PET preforms and finished plastic bottles in multiple sizes and custom colors. Customers can view different specifications of food-grade packaging samples, including PET preforms for edible oil, beverage and protein powder containers. We support custom mold development and color matching for your packaging projects.


Packaging and Shipping
Packaging
- Preforms are packed in sturdy cartons with protective inner layers to avoid scratches and deformation during transit. Each carton is marked with product model, quantity and shipping information for easy warehouse management.
- Shipping Cost & Tariff Benefits of Bottle Preform Shipment
- Shipping bottle preforms instead of finished bottles brings obvious economic advantages for importers:
- Space saving: Preforms take much less container space compared with finished hollow bottles. More goods can be loaded per container, reducing unit freight cost.
- Lower import tariff: In many countries, bottle preforms enjoy more favorable tariff rates than finished plastic bottles. It helps importers cut customs duty expenditure significantly.
- Reduced damage risk: Compact preform shape is less prone to breakage and collision damage during long‑distance sea or air transport.
- Flexible local production: Buyers can blow‑mold preforms into finished bottles at local factories, realizing on‑demand production and cutting finished‑goods inventory pressure.
FAQ
What is the difference between short neck and high neck 28mm PET preforms?
Short neck preforms are mainly for mineral water and non-carbonated drinks. High neck preforms have reinforced threads for carbonated drinks and sparkling water to bear internal pressure.
Can you customize colors for 28mm PET preforms?
Yes. We support custom color by Pantone number for injection molding.
What is the weight tolerance of your PET preforms?
Our PET preform weight tolerance is ±0.3‑0.5g.
Can you develop new molds for special preform requirements?
Yes, we can develop new molds according to your custom requirements.
Our Certifications and Qualifications
“ISO 90012015 Quality Management System Certificate”
“Food Plastic Packaging Bottles Production Administrative Approval”
“Design Patent Certificate – Hair Dye Press Cap”
“Design Patent Certificate – Hair Dye Press Cap (2)”
“Utility Model Patent Certificate – Cosmetic Outer Cover Clamping Device”
“Utility Model Patent Certificate – New Cosmetic Packaging Bottle”
“Utility Model Patent Certificate – Easy-to-Fix Cosmetic Bottle”
“Utility Model Patent Certificate – Injection Mold for Internal Thread Bottle Cap”
“Utility Model Patent Certificate – Cosmetic Cap Directional Moving Structure”
“Utility Model Patent Certificate – Bottle Cap Forward & Reverse Correction Device”
“Utility Model Patent Certificate – Cosmetic Cap Screwing Equipment”
“Fourth session member unit certificate issued by Suzhou Daily Chemical Industry Association”
Get Your Wholesale Packaging Bottle Inquiry Solution
Tell us your requirement for capacity, color, logo printing. We will reply you within 24 working hours.