Sustainably cultivated across our southern Thailand plantations, precision-processed under strict ISO standards, and exported to Tier-1 industrial manufacturers in over 10 countries worldwide.
Over 70 years of sustainable rubber cultivation
Kobkiat Ingredients Co., Ltd. is a core member of the Kobkiat Global Family/Operations. Founded by Ms. K Prompalad, our company draws upon more than 70 years of generational family experience in rubber cultivation and agricultural excellence in southern Thailand.
Headquartered in Phatthalung, we operate hundreds of rai of rubber plantations paired with state-of-the-art processing facilities. We are committed to continuous technological innovation, meticulous human resource development, and responsible forestry that protects Thailand’s ecosystems.
Through our global group structure, we maintain independent offices and facilities in over 10 countries, sharing one unified promise: Reliable delivery, customer focus, and uncompromising quality control.
Over 7 decades of tree genetics, tapping craft, and coagulation science.
Mooney viscosity, PRI, and dirt aperture validation on every lot.
Seamless logistics covering 10+ nations across Europe, Asia, and Americas.
Synergy with biomass wood pellets, organic fertilizer, and oil recycling.
Manufactured with modern processing technology and stringent batch-by-batch laboratory control.
Liquid Latex
High-grade centrifuged latex from fresh field rubber. Formulated into High Ammonia (HA 100) and Low Ammonia (LA 200) varieties with optimal colloidal stability and low sludge content.
Sheet Rubber
Manufactured through controlled coagulation and wood-smoke combustion. Distinguished by its golden-amber luster, distinctive ribbed drying pattern, high elasticity, and superior resistance to fatigue.
Block Rubber
Technically specified natural rubber (TSR) processed by shredding, cleaning, and heat-baking into uniform 33.33 kg compressed bales. Exceptionally consistent mechanical properties for modern industrial compounding.
Official lab parameters tested in accordance with international ISO methods and the Thai Department of Agriculture Rubber Division.
| Spec / Technical Parameter | Kobkiat — HA 100 (High Ammonia) | Kobkiat — LA 200 (Low Ammonia) | ISO 2004:1997 (E) Standard | Testing Method |
|---|---|---|---|---|
| Dry Rubber Content (DRC), %, (m/m), min | 60.0% | 60.0% | 60.0% | ISO 126 |
| Total Solid Content (TSC), %, (m/m), min | 61.5% | 61.5% | 61.5% | ISO 124 |
| Non-Rubber Solid, %, (m/m), max | 1.6% | 1.6% | 2.0% | Calculated (TSC - DRC) |
| Alkalinity (as NH₃), %, (m/m) on latex concentrate | 0.60% min | 0.29% max | 0.60% min (HA) | ISO 125 |
| Mechanical Stability Time (MST), seconds, min | 800 sec | 800 sec | 650 sec | ISO 35 |
| Copper Content, mg/kg of total solids, max | 8 mg/kg | 8 mg/kg | 8 mg/kg | ISO 8053 |
| Coagulum Content, %, (m/m), max | 0.05% | 0.05% | 0.05% | ISO 706 |
| Sludge Content, %, (m/m), max | 0.10% | 0.10% | 0.10% | ISO 2005 |
| Manganese Content, mg/kg of total solids, max | 8 mg/kg | 8 mg/kg | 8 mg/kg | ISO 7780 |
| KOH Number, max | 0.65 | 0.65 | 1.0 | ISO 127 |
| Volatile Fatty Acid (VFA) Number, max | 0.03 | 0.03 | 0.20 | ISO 506 |
| Spec / Technical Data | Kobkiat — RSS 1 (Premium) | Kobkiat — RSS 2 | Kobkiat — RSS 3 |
|---|---|---|---|
| Dirt content on 44µ aperture, max % wt | 0.019% | 0.023% | 0.013% |
| Nitrogen, max % wt | 0.52% | 0.36% | 0.45% |
| Ash content, max % wt | 0.35% | 0.45% | 0.384% |
| Wallace Rapid Plasticity (P₀), min | 40.0 | 34.0 | 52.2 |
| Volatile matter, max % wt | 0.52% | 0.85% | 0.32% |
| Plasticity Retention Index (PRI), min % | 86.3% | 95.6% | 72.4% |
| Mooney Viscosity ML (1'+4') 100°C | 69.5 | 62.7 | 81.1 |
| Spec / Technical Data | Kobkiat — STR 5L | Kobkiat — STR 5 | Kobkiat — STR 10 | Kobkiat — STR 20 |
|---|---|---|---|---|
| Dirt content (max % wt) | 0.05% | 0.05% | 0.10% | 0.20% |
| Ash content (max % wt) | 0.40% | 0.50% | 0.75% | 1.00% |
| Nitrogen content (max % wt) | 0.60% | 0.60% | 0.60% | 0.60% |
| Volatile matter (max % wt) | 0.80% | 0.80% | 0.80% | 0.80% |
| Initial Plasticity (P₀, min) | 30 | 30 | 30 | 30 |
| PRI Index (min) | 60 | 60 | 60 | 50 |
| Official Thai Colour Marker | Light Green | Light Green | Brown | Red |
Unlike open-market commodity traders, Kobkiat Rubber operates an accredited in-house testing laboratory at our Phatthalung facility. Every batch is cataloged and tested before dispatch, ensuring exact lot-to-lot consistency.
Verifies viscosity, molecular weight distribution, and flow behavior under high thermal stress.
Measures thermal oxidation resistance and degradation stability during heavy mixing and vulcanization.
Ensures purity and absence of sand, wood, or metallic contaminants critical for aircraft tires and medical components.
Our concentrated latex, RSS sheets, and STR blocks serve demanding downstream manufacturing worldwide.
STR 20 and RSS 3 offer high tear strength, superior dynamic heat resistance, and low rolling resistance for commercial trucks and passenger tires.
Kobkiat HA 100 concentrated latex creates premium breathable, hypoallergenic, and high-resilience ergonomic mattresses and pillows.
Low non-rubber solids and ultra-clean centrifuging ensure superior elongation and microscopic barrier protection for surgical gloves and catheters.
High mechanical stability latex delivers durable abrasion-resistant palm dips for construction and warehousing protective gloves.
Compounded rubber blocks provide chemical-resistant, waterproof, and puncture-resistant safety boots and industrial aprons.
Uniform viscosity STR 5L and STR 10 enable precise molding of engine mountings, hydraulic fluid hoses, and airtight pipeline gaskets.
Low Ammonia (LA 200) latex serves as an eco-friendly binder for waterborne paints, carpet backings, and high-tack shoe adhesives.
Tailored packaging configurations engineered for intermodal sea freight, preserving latex purity and preventing contamination during transit.
Stainless steel ISO tank container designed for regional intermodal transit. Maximum thermal and physical protection.
Heavy-duty food-grade poly bladder in standard 20ft dry box. The most cost-effective solution for trans-oceanic liquid latex export.
80 drums per 20ft container (16.40 MT total). Securely strapped on export wooden pallets for easy factory decanting.
20 totes per 20ft container (up to 20 MT). Galvanized steel cage with bottom discharge valve for clean handling.
33.33 kg bales wrapped in low-density polythene, stacked and heavy-duty shrink-wrapped on wooden or steel export pallets.
Our logistics facility in Phatthalung connects seamlessly to deep-sea container ports (Songkhla Port and Laem Chabang Port). We handle complete export documentation, fumigation, phytosanitary clearance, and Certificates of Origin for hassle-free customs clearance worldwide.
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Sustainable agriculture that protects Thailand’s forest ecosystems while generating green energy.
By choosing Kobkiat FSC-certified natural rubber, our clients safeguard biodiversity and support fair livelihood for southern Thai farming communities.
Through Kobkiat Global Operations, non-productive rubber wood is converted into high-density wood pellets for clean industrial export energy.
Organic by-products from our sustainable farming integrate back into soil nutrition, eliminating synthetic chemicals and chemical run-offs.
Whether you require spot container pricing, annual contract supply, or customized technical specification sheets, our Phatthalung export team is at your service.
171 Moo 2, Na Not, Mueang Phatthalung District, Phatthalung 93000, Thailand
Submit your desired product grade and volume to receive an official FOB / CIF quotation within 12 business hours.