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SERIES / BRAND

LOONG-FLEX®.
Certified soft para-aramid UD, engineered as a real program platform.

LOONG-FLEX® is presented as Asia’s premier certified soft para-aramid UD platform, built for lighter, softer, and more repeatable ballistic protection programs.

LOONG-FLEX material visual
LOONG-FLEX® PLATFORM

Certified soft para-aramid UD, engineered as a real program platform.

LOONG-FLEX® is Sinofibra’s flagship soft ballistic material platform, centered on certified para-aramid UD technology for lighter, softer, and more consistent armor systems, with supplementary PE UD options available for selected lightweight architectures.

NIJ / VPAM / GA
Reference Standards

LOONG-FLEX® is framed around internationally legible ballistic testing and qualification language.

150 / 180 / 235 gsm
Core Armor Tiers

Representative para-aramid UD routes spanning accessible, flagship, and ultra-light body-armor programs.

Platform Notes

Built to move from body armor to flexible vehicle protection without leaving the UD logic behind.

LOONG-FLEX® stays focused on certified soft para-aramid UD, lower weight, softer handling, and conversion-ready ballistic formats. The core story stays compact here so the structural diagrams below can do the heavier explanatory work.

Certified soft para-aramid UDLightweight soft armor insertsFlexible ballistic panelsVehicle-protection laminatesArmor conversion inputs
UD Structure Logic

Technical structure, visualized instead of over-explained.

LOONG-FLEX® moves from fiber orientation and resin-matrix control into 2-ply and 4-ply laminate routes, then into a conversion-friendly roll format for real ballistic manufacturing work.

01 / UD Core Stack
Fiber + Matrix Working as One
01 / UD Core Stack
Active View

Fiber + Matrix Working as One

This cross-sectional diagram shows the LOONG-FLEX® logic clearly: unidirectional para-aramid fibers are stabilized between high-performance polymer film and resin layers so the laminate can stay light while still managing ballistic energy efficiently.

Unidirectional fibersPolymer film / resin matrixCore energy-dissipation logic

Products under LOONG-FLEX

FAB

SJ200-160S UHMWPE Soft Armor UD

A high-value UHMWPE unidirectional soft armor material designed for NIJ IIIA vests that need a balanced mix of protection, flexibility, and cost efficiency.

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FAB

SJ280-160S Lightweight UHMWPE UD

A mid-premium UHMWPE UD option for lightweight soft armor programs where low weight and strong fragment resistance matter more than entry-level pricing.

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FAB

SJ300-160S Conformable UHMWPE UD

A high-tenacity UHMWPE UD developed for soft armor systems that require strong conformability, low areal weight, and premium wearer comfort.

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FAB

SJ400-130S Ultra-Light UHMWPE UD

The lightest premium option in the Sinofibra soft armor lineup, built for elite NIJ IIIA systems that prioritize minimum weight with top-tier fiber performance.

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ARM

SU99-120H Entry Hard Armor UD

A cost-conscious UHMWPE hard armor UD built for entry-level hard plates, shields, and ceramic-backed structures where affordability is a key driver.

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ARM

SJ100-240H Heavy Hard Armor UD

A dense UHMWPE hard armor laminate for pressed ballistic plates and shield systems that need dependable stiffness, thickness, and ceramic-backer compatibility.

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ARM

SJ200-240H Balanced Hard Armor UD

A balanced hard armor UHMWPE UD that blends fragment resistance, plate efficiency, and manageable system weight for ceramic-backed rigid armor builds.

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ARM

SJ280-110H High-V50 Hard Armor UD

A thinner high-tenacity hard armor UHMWPE UD designed to push fragment V50 performance while keeping laminate thickness under control.

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ARM

SJ300-110H Premium Hard Armor UD

A premium high-tenacity hard armor UHMWPE UD created for advanced plates and rigid composite systems that target higher ballistic efficiency and lighter build strategies.

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FAB

SA-2150 Aramid Soft Armor UD

A cost-effective para-aramid soft armor UD for mainstream vest projects that need dependable NIJ IIIA behavior with straightforward assembly economics.

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FAB

SA-2135 High-Density Aramid Soft UD

A high-density para-aramid soft armor UD for programs that want fewer layers to reach target protection while keeping assembly more efficient.

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FAB

SA-3180 Ultra-Light Aramid Soft UD

A standout para-aramid soft armor UD engineered as an especially light solution against .44 Magnum SJHP, making it a strong candidate for weight-sensitive vests.

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ARM

SA-1233 Cost-Effective Aramid Hard UD

An entry-level aramid hard armor UD with competitive V50 performance and a cost profile suited to rigid composite plate programs.

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ARM

SA-2232 Flame-Resistant Aramid Hard UD

A rigid para-aramid hard armor UD that combines ballistic capability with excellent flame retardancy, making it suitable for structurally demanding armor builds.

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ARM

SA-3260 Advanced Aramid Hard UD

A higher-performing para-aramid hard armor UD for rigid plates and structural ballistic panels where stronger ballistic efficiency is required than entry-level woven solutions.

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FAB

SW-130T Lightweight Aramid Woven Fabric

A lightweight woven para-aramid ballistic fabric for flexible panel builds where low basis weight and clean weaving quality are priorities.

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FAB

SW-145H Balanced Aramid Woven Fabric

A balanced para-aramid woven fabric for soft armor inserts that need a dependable blend of tensile strength, drape, and ballistic efficiency.

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FAB

SW-175H High-Strength Aramid Woven Fabric

A heavier woven aramid ballistic fabric built for soft armor systems that favor robust tensile performance and fewer layers than lighter cloth options.

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FAB

SW-200T Plain-Weave Aramid Ballistic Fabric

A plain-weave para-aramid ballistic fabric for soft armor systems that want a traditional woven structure with strong tensile performance and scalable production behavior.

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FAB

SW-205T Twill Aramid Soft Armor Fabric

A proven twill-weave para-aramid armor cloth offering a high-value mix of tensile strength, stable ballistics, and easy soft-panel integration.

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ARM

SW-290T Helmet-Grade Aramid Fabric

A helmet-oriented woven para-aramid fabric optimized for thermoforming and rigid composite pressing, suitable for ballistic shells and hard panels.

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ARM

SW-410T Basket-Weave Helmet Fabric

A basket-weave para-aramid fabric tailored for helmet shells and hard armor composites that need strong structural behavior and stable V50 performance.

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ARM

SW-420T Twill Helmet Fabric

A twill-weave para-aramid helmet fabric tuned for rigid composite armor where shell forming, structural integrity, and ballistic performance all need to stay aligned.

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ARM

SW-460T Heavy Armor Woven Fabric

A heavy woven para-aramid ballistic fabric for hard armor panels and armored vehicle structures that need very high tensile strength and structural toughness.

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FIB

SF-529R Para-aramid Continuous Filament Yarn

High-tenacity PPTA continuous filament yarn developed for industrial textiles, tire cord and rubber reinforcement, and protective or industrial composite reinforcement.

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FIB

SF-529S Para-aramid Continuous Filament Yarn

General-purpose PPTA continuous filament yarn for industrial textiles, cord and rubber reinforcement, optical cable reinforcement members, and protective or industrial composites.

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FIB

SF-529S Colored Para-aramid Continuous Filament Yarn

Dope-dyed PPTA continuous filament yarn engineered for stable shade control and efficient color coding in industrial manufacturing workflows.

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FIB

SF-529V Colored Para-aramid Continuous Filament Yarn

Value-grade dope-dyed PPTA continuous filament yarn positioned for cost-sensitive industrial applications that still require stable color coding and reinforcement behavior.

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FIB

SF-629 Para-aramid Continuous Filament Yarn

High-tenacity and high-modulus para-aramid continuous filament yarn developed for ballistic textiles, soft armor fabrics, and reinforcement in protective composites.

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FIB

SF-629T Para-aramid Continuous Filament Yarn

Military and ballistic high-tenacity para-aramid continuous filament yarn developed for ballistic textiles, military protective equipment, and soft armor reinforcement.

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FIB

SF-YF529RC-1000D Para-aramid Filament Twisted Yarn

High-performance twisted para-aramid filament yarn engineered for tire and automotive reinforcement, especially for high-performance passenger car tire structures.

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FIB

SF-YF529RC-1500D Para-aramid Filament Twisted Yarn

Heavy-duty twisted para-aramid filament yarn for tire and automotive reinforcement where higher load-bearing capacity and thermal stability are required.

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FIB

SF-PP-1128 Para-Aramid Pulp

High-performance para-aramid fibrid pulp for reinforcement in composites, friction materials, and sealing systems.

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FIB

SF-PULP-1820 Para-Aramid Pulp

High-performance para-aramid pulp designed for composite reinforcement, friction materials, and seals where wear resistance and thermal stability are critical.

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