Product quality
Every shipment is carefully matched to your confirmed order specifications. Comprehensive material testing and quality checks are conducted before dispatch, ensuring you receive exactly what you expect, every time.
Vietnam natural rubber exporter since 2001
Built for reliable
global supply.
Technically specified rubber, ribbed smoked sheets and concentrated latex. Supplied from Vietnam with consistent quality control, reliable export documentation and direct commercial support.
QualityConsistent specifications
ServiceOn-time delivery
ExperienceExporting since 2001
How we do business
Three principles behind every order.
Dependable service
We coordinate end-to-end production, packaging and logistics to deliver consistently and on-time, with direct communication from order placement through to shipment.
Proven experience
Exporting natural rubber since 2001 to markets across Asia, Europe and beyond, backed by transparent, accurate documentation at every stage.
About Khoi Nguyen Rubber
Commercial clarity, consistent quality and long term commitment.
2001Founded
25+Years exporting
30+Export markets
ISO 9001Quality standard
Founded in 2001, Khoi Nguyen Rubber is a Vietnam-based manufacturer and exporter of natural rubber, serving industrial buyers across Asia, Europe and beyond.
Our product range covers SVR grades (3L, 5, 10, 20, CV50, CV60), RSS1 and RSS3, and HA and LA concentrated natural rubber latex, produced in line with ISO 9001:2015 quality management principles.
We have supplied customers in Brazil, China, Ecuador, Egypt, Germany, India, Iraq, Japan, Jordan, Malaysia, Portugal, Russia, South Korea, Turkey, Uzbekistan, Yemen and other markets, many of whom order from us on a repeat basis.
Our network of established supply partners across Vietnam's major rubber producing regions allows us to match production sources, specifications and packing options to each buyer's requirements, from a single FCL to ongoing annual programmes.
Discuss your requirements →Our Mission
From enquiry to shipment: how an order moves.
Most orders begin with a specification and a target volume — from a single FCL to a recurring annual programme. We match that requirement against our network of supply partners across Vietnam's rubber producing regions, confirm grade, packing and price, and agree a delivery schedule before production is committed.
From there, the same team stays on the order through production, packing and loading, so a buyer is dealing with one point of contact rather than being handed between departments as the shipment moves from factory to port.
Vietnamese origin
Vietnamese origin, managed for international requirements.
Vietnam is one of the world's established natural rubber producers, with a growing base that has made it a consistent supply source for SVR, RSS and latex grades year-round. Buyers sourcing from Vietnam are typically choosing an origin with continuity of supply rather than a seasonal or single-harvest market. As a result, matching the right grade and specification to the right production source is the main technical decision in placing an order.
✓ Grade and specification matching
✓ Supply source selection
✓ Packing method selection
✓ Shipment scheduling
Our products
Rubber solutions for industrial buyers.
Our full range
SVR, RSS & Latex grades
All ten grades we export: six SVR block-rubber grades, RSS1 and RSS3 ribbed smoked sheets, and Latex HA and LA concentrated latex. Select a family above to filter, or open any grade below for full specifications.
SVR 3L
01
SVR 3L
Light colour technically specified rubber for gloves, medical and demanding applications.
SVR 3L is a technically specified natural rubber produced from fresh field latex rather than cup lump or coagulum, giving it the lowest impurity level and lightest, most consistent colour in our SVR range.
Applications: medical and surgical gloves, light-coloured rubber goods, adhesives, footwear components.
Origin: Vietnam. Form: baled block rubber. Colour: light (Lovibond ≤ 6). Quality system: ISO 9001:2015.
| Property | Specification | Test method |
|---|---|---|
| Dirt content, retained on 45 μm sieve (max % wt) | 0.03 | TCVN 6089:2004 (ISO 249:1995) |
| Ash content (max % wt) | 0.50 | TCVN 6087:2004 (ISO 247:1990) |
| Nitrogen content (max % wt) | 0.60 | TCVN 6091:2004 (ISO 1656:1996) |
| Volatile matter (max % wt) | 0.80 | TCVN 6088:2004 (ISO 248:1991) |
| Initial Wallace plasticity, Po (min) | 35 | TCVN 6092-2:2004 (ISO 2007:1991) |
| Plasticity retention index, PRI (min) | 60 | TCVN 6092-1:2004 (ISO 2930:1995) |
| Lovibond colour index (max) | 6 | TCVN 6093:2004 (ISO 4660:1999) |
| Mooney viscosity ML (1+4) at 100°C | Not specified | TCVN 6090:2004 (ISO 289-1:1994) |
| Cure | R | TCVN 6094:2004 (ISO 3419:1991) |
| Colour coding strip | Transparent | Not specified |
| Colour coding strip marker | Light Green | Not specified |
SVR 5
02
SVR 5
A high-quality, general-purpose grade with low impurity levels.
SVR 5 is a general-purpose technically specified natural rubber produced from a broader range of field material than SVR 3L, with no colour restriction.
Applications: general and industrial rubber manufacturing, where consistent physical properties matter more than appearance.
Origin: Vietnam. Form: baled block rubber. Grade type: technically specified rubber. Quality system: ISO 9001:2015.
| Property | Specification | Test method |
|---|---|---|
| Dirt content, retained on 45 μm sieve (max % wt) | 0.05 | TCVN 6089:2004 (ISO 249:1995) |
| Ash content (max % wt) | 0.60 | TCVN 6087:2004 (ISO 247:1990) |
| Nitrogen content (max % wt) | 0.60 | TCVN 6091:2004 (ISO 1656:1996) |
| Volatile matter (max % wt) | 0.80 | TCVN 6088:2004 (ISO 248:1991) |
| Initial Wallace plasticity, Po (min) | 30 | TCVN 6092-2:2004 (ISO 2007:1991) |
| Plasticity retention index, PRI (min) | 60 | TCVN 6092-1:2004 (ISO 2930:1995) |
| Lovibond colour index (max) | Not specified | TCVN 6093:2004 (ISO 4660:1999) |
| Mooney viscosity ML (1+4) at 100°C | Not specified | TCVN 6090:2004 (ISO 289-1:1994) |
SVR 10
03
SVR 10
A versatile grade widely used in tyres and general rubber goods.
SVR 10 is a general-purpose technically specified rubber for high-volume manufacturing, with wider tolerances than the SVR 3L and SVR 5 grades.
Applications: tyre components, general rubber goods manufacturing, where volume and consistent bale-to-bale behaviour matter most.
Origin: Vietnam. Form: baled block rubber. Grade type: technically specified rubber. Quality system: ISO 9001:2015.
| Property | Specification | Test method |
|---|---|---|
| Dirt content, retained on 45 μm sieve (max % wt) | 0.08 | TCVN 6089:2004 (ISO 249:1995) |
| Ash content (max % wt) | 0.60 | TCVN 6087:2004 (ISO 247:1990) |
| Nitrogen content (max % wt) | 0.60 | TCVN 6091:2004 (ISO 1656:1996) |
| Volatile matter (max % wt) | 0.80 | TCVN 6088:2004 (ISO 248:1991) |
| Initial Wallace plasticity, Po (min) | 30 | TCVN 6092-2:2004 (ISO 2007:1991) |
| Plasticity retention index, PRI (min) | 50 | TCVN 6092-1:2004 (ISO 2930:1995) |
| Lovibond colour index (max) | Not specified | TCVN 6093:2004 (ISO 4660:1999) |
| Mooney viscosity ML (1+4) at 100°C | Not specified | TCVN 6090:2004 (ISO 289-1:1994) |
SVR 20
04
SVR 20
A consistent, cost-effective grade for high-volume industrial production.
SVR 20 is produced from a blend of coagulum latex, cup-lump ('bowl') latex and tree-lace ('braid') scrap rather than fresh field latex, giving it the widest impurity tolerance in our SVR range.
Applications: tyres, tyre-repair products, anti-vibration components, railway rubber.
Origin: Vietnam. Form: baled block rubber. Grade type: technically specified rubber. Quality system: ISO 9001:2015.
| Property | Specification | Test method |
|---|---|---|
| Dirt content, retained on 45 μm sieve (max % wt) | 0.16 | TCVN 6089:2004 (ISO 249:1995) |
| Ash content (max % wt) | 0.80 | TCVN 6087:2004 (ISO 247:1990) |
| Nitrogen content (max % wt) | 0.60 | TCVN 6091:2004 (ISO 1656:1996) |
| Volatile matter (max % wt) | 0.80 | TCVN 6088:2004 (ISO 248:1991) |
| Initial Wallace plasticity, Po (min) | 30 | TCVN 6092-2:2004 (ISO 2007:1991) |
| Plasticity retention index, PRI (min) | 40 | TCVN 6092-1:2004 (ISO 2930:1995) |
| Lovibond colour index (max) | Not specified | TCVN 6093:2004 (ISO 4660:1999) |
| Mooney viscosity ML (1+4) at 100°C | Not specified | TCVN 6090:2004 (ISO 289-1:1994) |
SVR CV50
05
SVR CV50
Constant-viscosity grade with a softer starting viscosity, for stable, predictable processing.
SVR CV50 is a constant-viscosity natural rubber, chemically stabilized during processing to hold a steady Mooney viscosity rather than drifting with storage age as standard TSR grades can. Purity matches SVR 3L; it is the softer-starting option between our two CV grades, reducing pre-mastication needs.
Applications: adhesives, engineering rubber goods.
Origin: Vietnam. Form: baled block rubber. Viscosity: Mooney 50±5. Quality system: ISO 9001:2015.
| Property | Specification | Test method |
|---|---|---|
| Dirt content, retained on 45 μm sieve (max % wt) | 0.02 | TCVN 6089:2004 (ISO 249:1995) |
| Ash content (max % wt) | 0.40 | TCVN 6087:2004 (ISO 247:1990) |
| Nitrogen content (max % wt) | 0.60 | TCVN 6091:2004 (ISO 1656:1996) |
| Volatile matter (max % wt) | 0.80 | TCVN 6088:2004 (ISO 248:1991) |
| Initial Wallace plasticity, Po (min) | Not specified | TCVN 6092-2:2004 (ISO 2007:1991) |
| Plasticity retention index, PRI (min) | 60 | TCVN 6092-1:2004 (ISO 2930:1995) |
| Lovibond colour index (max) | Not specified | TCVN 6093:2004 (ISO 4660:1999) |
| Mooney viscosity ML (1+4) at 100°C | 50±5 | TCVN 6090:2004 (ISO 289-1:1994) |
SVR CV60
06
SVR CV60
Constant-viscosity grade with a firmer starting viscosity, for stable, predictable processing.
SVR CV60 is a constant-viscosity natural rubber, chemically stabilized to the same tolerance as CV50 but at a firmer starting viscosity. Purity matches CV50.
Applications: adhesives, engineering rubber goods where the compound is calibrated around a higher starting viscosity.
Origin: Vietnam. Form: baled block rubber. Viscosity: Mooney 60±5. Quality system: ISO 9001:2015.
| Property | Specification | Test method |
|---|---|---|
| Dirt content, retained on 45 μm sieve (max % wt) | 0.02 | TCVN 6089:2004 (ISO 249:1995) |
| Ash content (max % wt) | 0.40 | TCVN 6087:2004 (ISO 247:1990) |
| Nitrogen content (max % wt) | 0.60 | TCVN 6091:2004 (ISO 1656:1996) |
| Volatile matter (max % wt) | 0.80 | TCVN 6088:2004 (ISO 248:1991) |
| Initial Wallace plasticity, Po (min) | Not specified | TCVN 6092-2:2004 (ISO 2007:1991) |
| Plasticity retention index, PRI (min) | 60 | TCVN 6092-1:2004 (ISO 2930:1995) |
| Lovibond colour index (max) | Not specified | TCVN 6093:2004 (ISO 4660:1999) |
| Mooney viscosity ML (1+4) at 100°C | 60±5 | TCVN 6090:2004 (ISO 289-1:1994) |
RSS1
07
RSS1
Premium Grade 1 ribbed smoked sheet.
RSS1 is the top visual grade of ribbed smoked sheet, produced by coagulating, sheeting, air-drying and smoking latex, then graded to the strictest criteria in the RSS system. It has the lightest, cleanest appearance of our RSS grades, free of spotting or blemish.
Applications: traditional sheet-rubber goods where appearance is specified alongside performance.
Origin: Vietnam. Form: ribbed smoked sheet. Grade: RSS1. Quality system: ISO 9001:2015.
| Grade Criteria | Result |
|---|---|
| Grade | RSS1 |
| Colour | Very light |
| Colour at packing | Very light |
| Opaque spotty | No |
| Spotty due to being excessively smoked | No |
| Spotty due to being oxidized | No |
| Singed sheet | No |
RSS3
08
RSS3
Standard commercial Grade 3 ribbed smoked sheet, widely traded internationally.
RSS3 is the standard commercial grade of ribbed smoked sheet, produced through the same coagulation, sheeting, air-drying and smoking process as RSS1 but graded to a more attainable visual standard. It is the RSS grade most commonly traded internationally.
Applications: general sheet-rubber goods, tyres, industrial rubber products.
Origin: Vietnam. Form: ribbed smoked sheet. Grade: RSS3. Quality system: ISO 9001:2015.
| Grade Criteria | Result |
|---|---|
| Grade | RSS3 |
| Colour | Light |
| Colour at packing | Light |
| Opaque spotty | Light |
| Spotty due to being excessively smoked | No |
| Spotty due to being oxidized | No |
| Singed sheet | No |
Latex HA
09
Latex HA
High-ammonia concentrated natural rubber latex for gloves, condoms and dipped goods.
Latex HA is a high-ammonia concentrated natural rubber latex, centrifuged from fresh field latex to raise its dry rubber content above field level. The ammonia charge stabilizes it during storage and transport.
Applications: gloves, condoms, other dipped-film goods.
Origin: Vietnam. Form: concentrated latex (60% DRC). Type: high-ammonia (HA). Quality system: ISO 9001:2015.
| Property | Spec limit | Test method |
|---|---|---|
| Total solids content, % (m/m) | ≥ 61.00 | TCVN 6315:2015 (ISO 124:2014) |
| Dry rubber content, % (m/m) | ≥ 60.00 | TCVN 4858:2007 (ISO 126:2005) |
| Non-rubber solids, % (m/m) | ≤ 1.70 | — |
| Alkalinity as NH3, % (m/m) | ≥ 0.60 | TCVN 4857:2015 (ISO 125:2011) |
| Mechanical stability time (MST), sec | ≥ 650 | TCVN 6316:2007 (ISO 35:2004) |
| Volatile fatty acid (VFA) number | ≤ 0.06 | TCVN 6321:1997 (ISO 506:1992) |
| KOH number | ≤ 0.7 | TCVN 4856:2015 (ISO 127:2012) |
| pH value | — | TCVN 4860:2015 (ISO 976:2013) |
| Coagulum content, % (m/m) | ≤ 0.03 | TCVN 6317:2007 (ISO 706:2004) |
| Sludge content, % (m/m) | ≤ 0.10 | TCVN 6320:2016 (ISO 2005:2014) |
| Copper content, mg/kg | ≤ 8 | ISO 6101-3:2022 |
| Manganese content, mg/kg | ≤ 8 | ISO 6101-4:2022 |
Latex LA
10
Latex LA
Low-ammonia, TMTD-free concentrated latex for foam, carpet backing and odour-sensitive applications.
Latex LA is a low-ammonia, TMTD-free concentrated natural rubber latex, produced by the same centrifugation process as HA but stabilized differently, avoiding both ammonia odour and the TMTD-linked nitrosamine concern some buyers screen for.
Applications: foam, carpet backing, other odour-sensitive applications requiring low residual ammonia.
Origin: Vietnam. Form: concentrated latex (60% DRC). Type: low-ammonia (LA), TMTD-free. Quality system: ISO 9001:2015.
| Property | Spec limit | Test method |
|---|---|---|
| Total solids content, % (m/m) | ≥ 61.00 | TCVN 6315:2015 (ISO 124:2014) |
| Dry rubber content, % (m/m) | ≥ 60.00 | TCVN 4858:2007 (ISO 126:2005) |
| Alkalinity as NH3 (LA), % (m/m) | ≤ 0.29 | TCVN 4857:2015 (ISO 125:2011) |
| Mechanical stability time (MST), sec | ≥ 650 | TCVN 6316:2007 (ISO 35:2004) |
| KOH number | ≤ 0.7 | TCVN 4856:2015 (ISO 127:2012) |
| Volatile fatty acid (VFA) number | ≤ 0.06 | TCVN 6321:1997 (ISO 506:1992) |
| Coagulum content, % (m/m) | ≤ 0.03 | TCVN 6317:2007 (ISO 706:2004) |
Export ready packing
Prepared for efficient handling and secure shipment.
We provide several export packing options according to product type, handling requirements and the buyer's preferred handling method at destination.
Ask about packingOur supply chain
Vietnamese plantation to global port.
Click any step below to see real photos, video, or detail from our own facility and shipping process.
Market Reference
Key prices and market developments in one place.
Daily reference prices from Osaka, SICOM and Shanghai, supported by a concise market summary for natural rubber buyers.
OsakaOSE RSS3 Futures
410.2 JPY/kg
OSE RSS3 Jun. 2026 · Night reference quote
SingaporeSICOM TSR20 / RSS3
230.4 US cents/kg
SICOM TSR20 Jul. 2026 · Settlement dated 8 June 2026
ShanghaiSHFE Natural Rubber
N/A
No public endpoint available
Exchange rates
Static reference, not live-updating
Energy
USD per barrel, static reference
The Osaka, SICOM and Shanghai quotes above are refreshed from our market feed when available. The exchange-rate and energy figures are static reference points for context, not a live feed, and are not updated in real time. All prices are reference indicators only — physical quotations depend on grade, specification, quantity, packing and shipment terms, contact us for a current offer.
Get in touch
Tell us what you need.
Message us directly on WhatsApp for a fast reply, or use our website assistant to identify a suitable product, prepare the required information and submit a structured inquiry to our commercial team.
Available 24/7 for initial questions
Product and packing guidance
Human review before any quotation
W
Direct business contactWhatsApp: +84 979 365 388
Office307B Nguyen Van Troi Street, Tan Son Hoa Ward, Ho Chi Minh City, Vietnam
Telephone+84 28 3844 5795
Emailinfo@khoinguyen.com
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