Direct-from-factory high-performance calendered films, specialized polymers, and medical components compliant with stringent international regulatory standards.
Jiangsu Dahai Plastics Co., Ltd., founded in 1996, is a premier, technologically advanced private enterprise specializing in the R&D and high-precision production of diverse polyvinyl chloride (PVC) films, custom-printed calendered films, and tailored polymer compounds. Over nearly three decades of growth, we have solidified our global reputation as an industry leader in manufacturing super transparent films, ordinary clear films, non-stick functional sheets, toy grade films, protective raincoat materials, cold-resistant membranes, electrical insulating tapes, decorative laminates, PEVA films, customized polymer granules, table spreads, medical-grade urine drainage bags, and high-purity enteral feeding bags.
Our expansive industrial campus covers an area exceeding 120,000 square meters, housing 20+ advanced imported environmental protection calender and extrusion production lines. Powered by a dedicated workforce of over 450 employees, of which 30% represent specialized technical engineers and quality management professionals, we possess the capabilities to achieve an annual polymer output exceeding 100,000 tons. Our production precision and output capacity achieve annual sales crossing the 1 Billion RMB (approximately 140 Million USD) milestone. Through regular capital injection and state-of-the-art technological adoption, we consistently deliver world-class materials to leading international distribution and manufacturing networks across North America, South America, Europe, Southeast Asia, and Africa.
Our strategic expansion initiatives target the construction of a next-generation intelligent manufacturing project dedicated specifically to new medical materials, optimizing product sterile boundaries, chemical resistance, and biostability.
Understanding the micro and macro economic indicators driving efficiency, raw material cost stability, and technological differentiation in Chinese polymer clusters.
The concentration of advanced polymer manufacturing in the Jiangsu province provides deep economic efficiencies. Dahai Plastics harnesses integrated localized supply chains, sourcing upstream vinyl resins, plasticizers, and stabilizers within a 100-kilometer radius. This geographic configuration insulates global buyers from raw material spot price fluctuations, ensuring structural pricing advantages that are impossible to duplicate in less integrated logistics regions.
Furthermore, China's vast energy and petrochemical integration facilitates highly reliable supply guarantees. Our facility runs continuous calendering processes with multi-zone temperature controls, minimizing thermo-oxidative degradation. The output achieves mechanical and optical parity with premium European and Japanese manufacturers while sustaining high yield speeds and reduced overhead costs.
We do not merely supply generic sheets; our technical department engineers compound formulations to match target Shore hardness levels ranging from semi-rigid (Shore D 60) to extremely soft and flexible (Shore A 45). Our plasticization technology introduces customized stabilizers including Calcium-Zinc (Ca-Zn) systems for medical and eco-conscious food-contact applications, as well as specific monomeric and polymeric plasticizers (such as DOTP, DINP, and DOA) engineered for migration-free durability in low-temperature climates.
Across our project portfolio, the cumulative registered capital stands at 40 Million USD, with total operational assets exceeding 140 Million USD. Equipped with 20 imported environmental protection processing systems, our actualized annual maximum processing capacity reaches up to 150,000 tons under peak operational cycles.
Our sales networks reach over 400 cities across 12 domestic provinces, while our international direct export footprint actively serves multi-national corporations across more than 10 global destinations. In keeping with international requirements for cleanrooms, bio-compatibility, and sterile packaging, our future trajectory centers on the massive rollout of intelligent manufacturing systems designed to serve the global medical diagnostics and container markets.
Fostering forward-looking material science research, safety, and client transparency.
Make green materials, create a good and healthy life! We strive to balance high industrial productivity with ecological responsibility by pioneering bio-based plasticizers and zero-VOC calendered films.
To become the domestic polymer material application industry leader, to build a world-class brand recognized globally for quality, reliable logistics, and engineering ingenuity.
Independent innovation, intelligent future! Team style: people-oriented, safety first. Implementing rigorous work-safe protocols and continuous education for all engineering teams.
Integrity, pragmatic, efficient, win-win! Cultivating multi-decade commercial partnerships built on rigorous technical audits, exact specifications, and dependable lead times.
From cleanroom-fabricated medical collection bags to high-durability architectural structures, our materials perform flawlessly in challenging environments.
Our commitment to quality assurance is rooted in scientific rigor. Jiangsu Dahai Plastics Co., Ltd. operates in-house laboratories accredited by the China National Commission for Conformity Assessment (CNAS). These facilities house advanced testing apparatus to track chemical composition, polymer degradation, plasticizer migration, and physical properties.
Equipped with Agilent GC gas chromatography systems, universal mechanical testers, digital gloss meters, and environmental chambers for cold-tolerance evaluation, we track and control variances down to the molecular level. Our QA protocols verify that every shipment meets regulatory frameworks including:
A comprehensive framework to guide raw material purchasing agents in optimizing delivery pipelines, testing methodologies, and supplier validation metrics.
In global supply chain management, purchasing flexible polymers from Chinese factories requires careful analysis of material formulations. B2B procurement managers should evaluate suppliers using this four-tier checklist:
| Evaluation Parameter | Technical Metric Target | Dahai Plastics Standard Level |
|---|---|---|
| Shore Hardness Range | 40A to 90A (Flexible) / 50D to 90D (Semi-Rigid) | Custom compounded via precision plasticizer ratios |
| Heavy Metal Limits | Cd < 100 ppm, Pb < 90 ppm (CONEG / RoHS limits) | Undetectable (Agilent GC Analyzed) |
| Cold Crack Resistance | No brittle failure at -20°C to -45°C | Exceeds -30°C for custom outdoor vinyl formulations |
| Thickness Tolerance | ± 0.01 mm across the film width profile | Under ± 0.005 mm utilizing automatic calender adjustment systems |
| UV Light Degradation | Delta E < 3.0 after 1000 hours UV exposure | Available with HALS (Hindered Amine Light Stabilizers) addition |
The flexible materials landscape is shifting toward circular and bio-safe chemistry. Dahai Plastics has prioritized technical R&D with domestic engineering universities. We focus on low-migration polymeric plasticizers that remain chemically stable within polymer chains even when exposed to high temperatures, lipids, or continuous mechanical stress. Our research supports medical device clients, preventing plasticizer elution in sterile parenteral nutrition feeding bags and dialysis tubes.
Detailed answers to help global sourcing managers make informed buying decisions regarding materials, compliance, and custom compounding options.
Calendering processes polymer compound through a series of heated, counter-rotating rollers to squeeze the plastic mass into thin, highly uniform sheets. Calendering is ideal for large-scale production of thin, transparent films, enabling close control over surface gloss, emboss patterns, and thickness consistency. Extrusion, conversely, forces molten plastic through a flat slot die, which is better suited for producing thicker sheets, laminates, and profiles. Dahai operates both systems, prioritizing high-efficiency calendering lines to maintain competitive wholesale pricing for high-yield runs.
We work exclusively with certified polymer and chemical supplier partners who verify their base raw materials. Every production lot undergoes rigorous internal and external laboratory audits. Our CNAS-accredited labs use gas chromatography-mass spectrometry (GC-MS) to confirm that restricted substances, heavy metals, and plasticizers are kept well below maximum regulatory limits, providing reliable compliance documentation for international logistics.
Standard PVC becomes brittle and cracks at low temperatures due to glass transition properties. To resolve this, our lab incorporates specialized low-temperature plasticizers, such as Di-octyl Adipate (DOA) or Sebacate derivatives. These formulations keep the polymer flexible and crack-resistant down to -30°C or even -45°C. This makes them ideal for polar shipping envelopes, protective industrial curtains, and winterized outdoor inflatables.
Yes. Our medical-grade materials, such as our medical urine bag films and enteral feeding bags, are manufactured under cleanroom conditions. We use specialized non-phthalate plasticizers (e.g., TOTM or DOTP) to minimize compound migration into aqueous bio-fluids. These films meet international medical safety standards, offering high weldability, clear visibility, and reliable sterilization performance.
Yes. We offer several surface treatment options, including super clear, frosted, glossy, and custom embossed textures. Our texturing process uses specialized calendering rollers that emboss patterns directly onto the hot sheet during production. These finishes improve scratch resistance, reduce surface sticking, and enhance the visual appeal of tablecloths, stationery, and packaging rolls.
This film is engineered for structural safety glass and architectural glazing. Under vacuum heat lamination, the film bonds glass layers together. If the glass breaks, the fragments adhere to the EVA film, preventing injury. The film also provides sound dampening, block UV rays, and protects interior spaces from thermal transfer.
A full range of rigid sheet rolls, transparent films, and customized chemical compounds engineered for high-demand industrial processing lines.
Dahai Plastic
