HDPE/COEX Bottle 500mL ø50mm Round Square-Shoulder with 2 Ridges – Specialized Packaging for Industrial Chemicals
In the segment of packaging specialized chemicals and specific solutions, possessing a smart, durable packaging design that optimizes warehousing space is always a top priority for manufacturers. The 300mL ø50mm Round Square-Shoulder HDPE/COEX Bottle with 2 Ridges is a premium, strategic product line from P H L Plastics.
At P H L, the HDPE/COEX category offers businesses two optimal choices tailored to their specific needs: the standard, robust HDPE Bottle line or the high-tech COEX Bottle line (featuring a 3-layer structure with an inner layer of EVOH material that possesses extremely strong chemical resistance, preventing cross-permeation entirely). Combined with breakthrough design improvements, this is definitively the solution to elevate your brand identity and provide absolute product protection for your enterprise.
1. Product Information
- Height (including cap): 194.40 mm
- Bottle Diameter: 73.80 mm
- Label Diameter: 72.60 mm
- Label Height: 103.50 mm
- Packaging Specification: 120 Bottles/bag
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2. Key Features
Outperforming conventional product lines on the market, the 300mL HDPE/COEX bottle possesses valuable technological advantages:
Modern Square-Shoulder Design: The square-shoulder form factor helps optimize stacking space inside shipping cartons, minimizing shaking and shifting during long-distance transport, while delivering an exceptionally strong and solid appearance.
Smart 2-Ridge Design – Secure Label Positioning: The bottle body is subtly integrated with upper and lower boundary ridges that act as a shield to protect the decal layer. This design prevents labels from getting scratched due to friction, ensuring they remain firmly attached and wrinkle-free to fully honor your brand identity.
Tamper-Evident (Guarantee) Lock for Absolute Security: The bottle neck integrates a secure tamper-evident ring combined with an ultra-tight cap, allowing consumers to easily recognize that the product remains 100% intact from the factory, preventing leakages, counterfeiting, or tampering with the liquid inside.
Solution Synchronization with P H L Ecosystem:
- Degassing Valve Integration: Featuring a standard ø50mm neck diameter, the bottle pairs perfectly with our collection of caps equipped with degassing valves (one-way vents)—a golden solution that releases natural gas pressure build-up from chemicals, completely preventing bloating or denting of the bottle during warehousing.

- Full Volume Spectrum: Belonging to a comprehensive ecosystem, this square-shoulder line offers maximum uniformity for your brand, available in a full range of capacities from large to small, including: 1300mL – 500mL – 300mL – 100mL.
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- 3-Layer COEX Technology (EVOH Inner Layer): For the COEX bottle line, the superior EVOH barrier layer on the innermost side effectively resists aggressive chemicals and organic solvents, blocking vapor diffusion and protecting the internal liquid quality from degradation over time.
3. Ideal Practical Applications
Thanks to the flexibility between HDPE and COEX (EVOH) materials, this product serves as an irreplaceable companion across multiple fields:
- Agricultural Chemicals: Highly suited for containing premium foliar fertilizers, liquid micronutrient fertilizers, plant growth regulators, or concentrated biological compounds with highly corrosive or gas-producing properties.
- Veterinary, Aquaculture & Livestock Chemicals: Specifically designed for packaging liquid veterinary medicines, aquaculture environmental treatment formulas, concentrated probiotics, or powerful disinfectants.
- Other Industrial Sectors: Exhibits excellent resistance to harsh solvents, making it ideal for use as packaging for printing inks, industrial paints, dyeing auxiliaries, high-tech lubricants, or long-term chemical laboratory samples.
With over a decade of experience, P H L proudly stands as one of Vietnam’s leading manufacturers and suppliers of plastic bottle packaging.
We continuously innovate to deliver high-quality – efficient – and sustainable packaging solutions that meet the growing demands of the market.
Our Commitment to Making a Difference:
- ISO 9001:2015 Certified Quality: Each product undergoes strict control for durability, leak-resistance, chemical compatibility, and appearance.
- Continuous Technological Innovation: We invest in automation systems, advanced color-blending technology, in-house design, and precision mold manufacturing to optimize both productivity and aesthetics.
- Dedicated Service – Professional Support: The P H L team supports clients from product design to final delivery with care and professionalism.
- Environmental Commitment – ISO 14001:2015 Certified: We follow eco-friendly manufacturing processes, energy-saving practices, and full compliance with environmental regulations.
- Cost-Effective, Value-Driven Solutions: Our optimized production ensures competitive pricing without compromising quality or performance.
- Diverse Product Range: From PET and HDPE bottles to COEX bottles, plastic jerry cans, and PP caps – we serve various industries including agrochemicals, cosmetics, fertilizers, chemicals, and food products.
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