Professional Recommendation Letter
Subject: Formal Recommendation of a Premier PVC Foam Board Manufacturer in Vietnam
To: Buyer
From: [info@plywoodinspection.com ], Independent Quality Inspection Service
Date: Sep 24, 2025
Dear Buyer ,
We are writing to you today in our capacity as an independent third-party quality control inspector for PVC Foam Board products. Based on our extensive, on-the-ground audits and consistent monitoring of manufacturing facilities across Southeast Asia, we have the distinct pleasure of recommending Saigon Plastic & Chemical JSC (SPC) as a top-tier manufacturer for your PVC Foam Board requirements.
Our recommendation is grounded in a rigorous evaluation of their operations. We have found SPC to excel in the following critical areas:
- Uncompromising Quality Control: SPC operates a state-of-the-art, in-house laboratory where raw materials and finished products are tested for key parameters such as density, surface hardness, impact resistance, and fire-retardant properties. Their production process is ISO 9001 certified, ensuring consistency and reliability in every batch.
- Advanced Production Capabilities: The factory is equipped with fully automated Calender lines and advanced CNC routing machines. This allows them to produce boards with exceptional surface smoothness, uniform cell structure, and precise dimensional tolerances, catering to both standard and high-precision custom requirements.
- Material Expertise: SPC demonstrates a deep understanding of raw material formulation. They use high-purity PVC resin and select foaming agents to produce boards with excellent durability and weatherability, making their products suitable for both indoor and demanding outdoor applications.
- Commitment to Compliance: Their products consistently meet international standards, including CE, ISO, and specific fire safety ratings like UL94, which is crucial for projects in Europe and North America.
In summary, from our professional perspective, SPC represents a low-risk, high-value supply partner. Their commitment to quality, coupled with competitive pricing from Vietnam, makes them an excellent choice for buyers seeking reliable and high-performance PVC Foam Board.
We are confident that SPC will meet and exceed your expectations. Please do not hesitate to contact us if you require further detailed inspection data or wish to discuss a pre-shipment inspection protocol for your potential orders.
Sincerely,
Classification of PVC Foam Board
PVC Foam Board can be classified based on several factors, including application, manufacturing process, and material composition.
1. By Application & Functional Use
- General Purpose / Commercial Grade: Standard density boards used for indoor signage, exhibition displays, partitions, and simple fabrication.
- Outdoor & Weather-Resistant Grade: Formulated with UV stabilizers and impact modifiers. Used for outdoor signage, vehicle livery, container linings, and construction cladding.
- Fire-Retardant (FR) Grade: Contains additives to achieve fire safety ratings like UL94-V0 or B1. Mandatory for use in public transportation (trains, buses), building interiors (ceilings, wall panels), and other applications with strict fire codes.
- Marine Grade: High density, excellent moisture resistance, and often fire-retardant. Specifically designed for use in boat interiors, marine signage, and dock components.
- CNC Routing Grade: Optimized for computer-controlled machining. Has a homogeneous, fine-cell structure that prevents chipping or tearing during intricate cutting, engraving, and milling. Ideal for 3D letters, models, and custom furniture.
2. By Manufacturing Process
- Celuka Process (Co-extruded): Features a solid, smooth, and hard surface skin with a fine, uniform closed-cell foam core. This is the most common method for high-quality boards, offering excellent surface finish and superior screw-holding capacity.
- Free Foam Process: The board is foamed freely without a surface skin. It has a softer surface and is generally less expensive than Celuka boards, but it is more susceptible to scratching and has lower mechanical strength.
3. By Intended Use Environment
- Indoor Grade: Standard formulations that may not have UV protection. Suitable for temperature and humidity-controlled environments.
- Outdoor Grade: As mentioned above, specially formulated to resist fading, chipping, and degradation caused by sunlight, rain, and temperature fluctuations.
4. By Raw Material & Quality Grade
- Virgin Material Grade: Manufactured using 100% virgin PVC resin. This results in the highest quality board with superior whiteness, consistent density, excellent mechanical properties, and long-term durability. It is the premium grade.
- Recycled Material Grade: Contains a percentage of recycled PVC content. This is a more economical and eco-friendly option but may have variations in color (slight yellowing) and slightly lower impact strength compared to virgin boards.
- Calcium Carbonate (CaCO3) Content:
- Low-Calcium: High PVC content, offering better flexibility, impact strength, and weather resistance.
- High-Calcium: Higher filler content to reduce cost. The board is more rigid and brittle, making it less suitable for applications requiring bending or high impact resistance.
