Rongxin Cataloge

2015 CATALOGUE
Dongguan Rongxin Silicone Technology CO.,LTD

About us
Our Products
 Mold Making Tin-Cure Silicone Rubber
 Shoe Soles Silicone Rubber
 Mold Making Platinum-Cure Silicone Rubber
 RTV2 Life Casting Silicone Rubber
 Condensation Electronic Potting Silicone Rubber
 Addition Electronic Potting Silicone Rubber
 Polyurethane Rubber
 Easy Casting Molding Silicone Putty
 Polyurethane Resin For Casting/Polyurethane Plastic
Our Package
Our Certificate

About Us
Dongguan Rongxin Silicone Technology Co.,Ltd is founded in 1999. and located in Tangxia, Dongguan.We
are a polymer material manufacturer who is integrated in R&D, production and sales. And we have set up
Shenzhen Rongxingda Polymer Material Co.,Ltd in 2012.
Our products are with high quality and have gotten ISO, ROHS,REACH and SGS MSDS etc certificated.our
customers are from all over the world. Specially, in America, Europe, and Southeast Asia, many customers
are keeping a long term cooperation with us.

MOLD MAKING TIN-CURE SILICONE RUBBER
Condensation tin cure silicone are two-component materials
which cure at room temperature (RTV) to flexible, high
tear-strength rubbers.
It can be poured onto models or they can be made brush-able
by adding a thixotropic additive.
Characteristics:
• Easy to use
• Use tin catalyst
• Reproduce intricate details
• Resist tearing with repeated use
• Provide good resistance to most chemicals
• Offer variable cure times at room temperature
• Flexible to reduce de-molding and stress problems
• High duplication times(e.g.800-1000times for gypsum products),
• High resistance to high temperature and aging(resist -60 to 200℃)
Application:
• Artificial stone products molding,Wax casting
• Lighting & candles,soap crafts,stationery gifts,crafts industry
• Making molds for gypsum,GRC,concrete,resin products etc
• Casting for Statue,Buddha,Christmas ornaments,sculptures,
figures etc
• Unsaturated rein crafts,epoxy resin crafts, poly resin crafts,polyester resin
• Decoration building mold making (cornice,column, balustrade, ceiling, pedestals,
fountains, mantels, wall ornament, planter,furniture decorative etc.)
Take a closer look at your Cure options
Working and Cure Times at Room
Temperature (25°C)
Curing Agent
Appearance
Base/curing agent
Mixing Ratio,
By Weight
Pot life Time
mins
De-mold Time
Tin-4
clear 100:2 60-70mins 12 hours
clear 100:3 40-45mins 5-6 hours
Notice:
All the parameters and catalyst can adjust according to customer`s specific requirements.
Typical properties

1. Medium Viscosity
2. Low viscosity
Package:
Part A(silicone):1kg/bottle,5kg/drum,20kg/drum,25kg/drum,and200kg/drum
Part B(catalyst):40g/bottle, 0.2kg/bottle,1kg/bottle , and 2kg/bottle.
Characteristics before curing Characteristics after curing
Item NO. Appearance Viscosity
(Mpa.s)
Hardness
(Shore A)
Tear strength
(KN/m)
Tensile
Strength(Mpa)
Elongation
break (%)
Linear
Shrinkage(%)
RX-805 White 13000±2000 5±2 ＞20 ＞2.6 ＞650 0.3
RX-810 White 14000±2000 10±2 ＞22 ＞3.0 ＞650 0.3
RX-815 White 16000±2000 15±2 ＞26 ＞3.2 ＞550 0.3
RX-820 White 18000±2000 20±2 ＞28 ＞3.6 ＞500 0.3
RX-825 White 20000±2000 25±2 ＞29 ＞3.8 ＞450 0.3
RX-830 White 20000±2000 30±2 ＞33 ＞4.0 ＞400 0.3
RX-835 White 20000±2000 35±2 ＞30 ＞4.5 ＞350 0.3
(Mpa.s)
Hardness
(Shore A)
Tear strength
(KN/m)
Tensile
Strength(Mpa)
Elongation
break (%)
Linear
Shrinkage(%)
RX-L05 White 8000±2000 5±2 ＞5 ＞1 ＞500 0.3
RX-L10 White 8000±2000 10±2 ＞8 ＞1.5 ＞500 0.3
RX-L15 White 8000±2000 15±2 ＞18 ＞2.5 ＞500 0.3
RX-L20 White 9000±2000 20±2 ＞20 ＞2.8 ＞450 0.3
RX-L25 White 10000±2000 25±2 ＞22 ＞3.0 ＞400 0.3
RX-L30 White 11000±2000 30±2 ＞25 ＞3.0 ＞350 0.3

SHOE SOLES SILICONE RUBBER
Shoe soles silicone rubber is generally named as two-part silicone rubber that vulcanizes at room temperature.
Part A is a flow able liquid,part B is the catalyst.
Characteristics:
• Easy to use
• Use platinum catalyst
• Cures at room temperature within 3-4 hours
• Good tensile and tear strength, low shrinkage
• Good resistance to weather, temperature, aging, acid
• An exceptional fluidity and good operability, easy to remold
Application:
• shoe molds
• sand casting
• sole sampling
• plaster models
• simple products
• products with non-complex patterns
Take a closer look at your Cure options
Temperature (25°C)
Curing Agent
Appearance
Base/curing agent
Mixing Ratio,
By Weight
Pot life Time
mins
De-mold Time
Tin-4
clear 100:2 60-70mins 12 hours
Typical properties
Characteristic before curing Characteristic after curing
Mpa.s
Hardness
Shore A
Tear strength
(KN/m)
Tensile
Strength(Mpa)
Elongation
break (%)
Linear
Shrinkage(%)
RS15 white 12000±2000 15±2 ＞13 ＞2.5 ＞450 ≤0.3
RS20 white 12000±2000 20±2 ＞15 ＞2.8 ＞400 ≤0.3
RS25 white 12000±2000 25±2 ＞17 ＞3.0 ＞350 ≤0.3
RS30 white 12000±2000 30±2 ＞19 ＞3.0 ＞300 ≤0.3
Package:

Part A(silicone):1kg/bottle,5kg/drum,20kg/drum,25kg/drum,and 200kg/drum.
Part B(catalyst):1kg/bottle,and 2kg/bottle.
MOLD MAKING PLATINUM-CURE SILICONE RUBBER
Addition platinum cure molding silicone rubber is a two component, which are easy to use platinum catalyst mixed
1A:1B or 10A:1B by weight and vulcanizes at room
temperature.
Characteristics:
• Easy to use
• Almost nil shrinkage
• Excellent non-stick effect
• High degree of precision in reproduction
• High dimensional stability over time and non-deform ability
• Food grade silicone (environmental,odorless and nontoxic)
• High resistance to high temperature and aging(resist -60
to 200℃)
• High chemical resistance to aggressive components of some
types of resins
• Good tear strength (this feature ensures higher resistance to
wearing and shearing)
Application:
• PU resin casting
• Foot health, insole casting
• General mold making
• GRC and concrete molding
• Superior manual mold design
• Food grade molding application
• Rapid prototyping(urethane casting/silicone tooling/vacuum casting)
Curing agent
Temperature (25°C)
Curing Agent
Appearance
Base/curing agent
Mixing Ratio,
By Weight
Pot life Time min De-mold Time
P10 clear 10:1 30-45 min 6-8 hours
P11 clear 1:1 30-45 min 6-8 hours

Typical properties
Translucent Addition Silicone Rubber (1:1)
(Mpa.s)
Hardness
(Shore A)
Tear strength
(KN/m)
Tensile
Strength(Mpa)
Elongation
break (%)
Linear
Shrinkage(%)
RX-1500 Translucent 3000±2000 0±2 ＞18 ＞3.0 ＞800 ≤0.1
RX-1505 Translucent 4000±2000 5±2 ＞20 ＞3.2 ＞800 ≤0.1
RX-1510 Translucent 5000±2000 10±2 ＞22 ＞3.6 ＞650 ≤0.1
RX-1515 Translucent 6000±2000 15±2 ＞26 ＞3.8 ＞500 ≤0.1
RX-1520 Translucent 7000±2000 20±2 ＞28 ＞4.0 ＞480 ≤0.1
RX-1525 Translucent 8000±2000 25±2 ＞29 ＞4.5 ＞450 ≤0.1
RX-1530 Translucent 10000±2000 30±2 ＞33 ＞5.0 ＞430 ≤0.1
RX-1535 Translucent 15000±2000 35±2 ＞36 ＞5.5 ＞380 ≤0.1
RX-1540 Translucent 18000±2000 40±2 ＞40 ＞6.0 ＞330 ≤0.1
RX-1545 Translucent 6000±2000 45±2 ＞36 ＞3.5 ＞200 ≤0.1
Transparent Addition Silicone Rubber (10:1)
Mpa.s
Hardness
Shore A
Tear strength
(KN/m)
Tensile
Strength(Mpa)
Elongation
break (%)
Linear
Shrinkage(%)
RX-1300 Transparent 25000±5000 0 >12 >1.0 >650 ≤0.1
RX-1305 Transparent 20000±5000 5±2 >14 >1.5 >550 ≤0.1
RX-1310 Transparent 15000±5000 10±2 >16 >5.0 >500 ≤0.1
RX-1315 Transparent 15000±5000 15±2 >18 >5.0 >480 ≤0.1
RX-1320 Transparent 20000±5000 20±2 >22 >5.0 >450 ≤0.1
RX-1325 Transparent 20000±5000 25±2 >25 >5.0 >450 ≤0.1
RX-1330 Transparent 25000±5000 30±2 >30 >6.0 >400 ≤0.1
RX-1335 Transparent 30000±5000 30±2 >33 >6.0 >400 ≤0.1
RX-1340 Transparent 50000±5000 40±2 >36 >6.0 >380 ≤0.1
Package:
Part A(silicone):1kg/bottle,5kg/drum,20kg/drum,25kg/drum,and 200kg/drum.

RTV2 LIFE CASTING SILICONE RUBBER
Addition cure liquid silicone rubber/skin safe
DS series is a stable, high performance platinum cure silicone
rubber specifically designed for creating silicone makeup
appliances and skin effects that can be mixed 1A:1B by weight
or volume and cure at room temperature with negligible
shrinkage. Cured DS series is very strong and very “stretchy”.
It will stretch many times, it’s original size without tearing and will
rebound to its original form without distortion.
Characteristics:
• Easy to use
• Non-vacuum
• High degree of precision in reproduction
• Almost non shrinkage
• Good heat stability and weather ability(resist -60 to 250℃)
• Low compression set,great stability and ability to resist extreme temperatures of heat and cold.
Application:
• Makeup
• Sex toys
• Plaster, wax, resin and concrete
• Body breast enhancers
• Other soft silicone products
Curing agent
Typical properties
Characteristic before curing Characteristic after curing
Mpa.s
Hardness
Shore A
Tear strength
(KN/m)
Tensile
Strength(Mpa)
Elongation
break (%)
Linear
Shrinkage(%)
DS10 translucent 4000±1000 10±2 ＞22 ＞3.6 ＞650 ≤0.1
DS20 translucent 5000±1000 20±2 ＞28 ＞4.0 ＞480 ≤0.1
DS25 translucent 6000±1000 25±2 ＞29 ＞4.5 ＞450 ≤0.1
DS30 translucent 6000±1000 30±2 ＞33 ＞5.0 ＞430 ≤0.1
Temperature (25°C)
Curing Agent
Appearance
Base/curing agent
Mixing Ratio,
By Weight
Pot life Time De-mold Time
T01 clear 1：1 30-40 s 2 min
T02 clear 1：1 3 min 30 min
T03 clear 1：1 10-15 min 1.5-2 hour

Addition cure liquid silicone rubber/supper soft
SS00 series is a platinum-catalyzed silicone that are versatile and easy use. It is mixed with 1A:1B by weight
Or volume and cured at room temperature with negligible shrinkage. Low viscosity ensures easy mixing and de-airing.
SS00 series are currently available in six different hardness: shore 00-03, shore 00-10, shore 00-20, shore 00-30, shore
00-40, shore 00-50. They are suitable for a variety of application including making prosthetic applications, cushioning for
orthotics and special effects application.
Characteristics:
It has good electrical performance,chemical stability with features of water proof, non-toxic, easy operation
and non-vacuum. It can meet requirement of the mechanical strength even under a very low hardness.
Application:
• Latex mattress
• Robot skin etc machine skin
• Sex toys
• Body organs
• Prosthetic application
• Cushioning for orthotics
• Other soft silicone products
Typical properties
Mpa.s
Hardness
Shore A
Tear strength
(KN/m)
Tensile
Strength(Mpa)
Elongation
break (%)
Linear
Shrinkage(%)
SS00-03 White 6000±2000 00-03 >5 >1 >800 ≤0.1
SS00-10 White 6000±2000 00-10 >6 >1 >850 ≤0.1
SS00-20 White 6000±2000 00-20 >8 >1 >900 ≤0.1
SS00-30 White 6000±2000 00-30 >10 >1 >850 ≤0.1
SS00-40 White 6000±2000 00-40 >12 >1 >800 ≤0.1
SS00-50 White 6000±2000 00-50 >14 >1 >750 ≤0.1
Package:

CONDENSATION ELECTRONIC POTTING SILICONE RUBBER
Tin cure electronic potting silicone rubber is a two-component materials which cure at room temperature (RTV) (heating
curing)and molding organic silicone materials.
According to 100:10 (weight ratio or the volume in the thorough mixing proportion of A and B two components, products will
be in A certain time, form of the elasticity of curing buffer material.
Applications:
Suitable for general potting material for power supplies, connectors, sensors, industrial controls and transformers.
Features:
•UL 94V-0
• water proof
•Good flow-ability
•inflaming retarding
•Moderate thermal conductivity
•Room temperature or heat accelerated cure
Composition:
• 10 to 1 Mix Ratio
• Tin curing agent
• Polydimethylsil
Typical properties
Before
curing
Item NO. 3300 3303 3305
Appearance transparent black White
Viscosity Mpa.s part A 2000 2500 2500
part B 20 20 20
Density(g/cm3) part A 1.02 1.02 1.02
part B 0.86 0.90 0.90
After
curing
Hardness Shore A 20-23 25-30 25-30
Elongation break% 150 150 150
Tear strength(KN/m) 1.8 1.8 1.8
Tensile Strength(Mpa) 0.5-1.5 0.5-1.5 0.5-1.5
Volume resistivity/Ω.cm ≥1014
≥1014
≥1014
Break down voltage(kv/mm) ≥15 ≥15 ≥15
Specific inductive capacity(50Hz) 2.7-3.3 2.7-3.3 2.7-3.3
Dielectric loss factor(50Hz) ≤0.02 ≤0.02 ≤0.02
Thermal conductivity ≥0.2 ≥0.6 ≥0.6

Curing agent
Package:
ADDITION ELECTRONIC POTTING SILICONE RUBBER
Addition platinum cure electronic potting silicone rubber, also called addition-cure silicone, are two-component materials,
a room temperature/heating curing and molding organic silicone materials.
According to 1:1 (weight ratio or the volume in the thorough mixing proportion of A and B two components, products will
be in A certain time, form of the elasticity of curing buffer material.
Applications:
•Suitable for general potting material for power
supplies, connectors, sensors, industrial controls
and transformers.
Features:
•UL 94V-0
• water proof
•Good flowability
•inflaming retarding
•Moderate thermal conductivity
•Room temperature or heat accelerated cure
Benefits:
• Rapid, versatile cure processing controlled by temperature
• Can be considered for uses requiring added flame resistance
Composition:
• 1 to 1 Mix Ratio
• Polydimethylsiloxane
• platinum curing agent
Typical properties
Temperature (25°C)
Curing Agent
Appearance
Base/curing agent
Mixing Ratio,
By Weight
Pot life Time
mins
De-mold Time
E02 clear 10：1 30-40mins 4-6hrs
E03 clear 10：1 50-60mins 8-10hrs

Package:
POLYURETHANE RUBBER
Polyurethane rubber that are use to create flexible molds and tools for casting, forming, gypsum,concrete,
and texturing concrete,especially well for casting pigmented/colored concrete mold. It is a variety of mold making and
industrial applications with faster cured feature and 1:1 mixing ratio.
Advantage:
 Limitless design options for creating custom shapes, colors and textures.
 Make your stamped concrete look exactly like brick, flagstone, river rock, wood and more.
 Project Versatility - stamp concrete indoors or out to beautify courtyards, pool decks, driveways, stairways, patios
and more.
 Lower labor and material costs
 Time Savings – Complete any project in a fraction of the time vs. laying brick, stone, etc.
 Time Savings – Complete any project in a fraction of the time vs. laying brick, stone, etc.
Our softer Polyurethane Rubbers are great for products with deep undercuts and very irregular surfaces.Veneer stone,
decorative precast, and countertop edging are popular applications. Available in hardness ranging from Shore A10 to A40.
Our firmer Polyurethane Rubbers are great for products with fine detail and minimal undercuts. Popular uses include
Before
curing
Item NO. 1300 1303 1305
Appearance transparent grey White
Viscosity Mpa.s part A 1500 2800 2800
part B 1500 3200 3200
Density(g/cm3) part A 0.95-0.98 1.31-1.35 1.31-1.35
part B 0.95-0.98 1.33-1.36 1.33-1.36
Ratio(part A+part B) 1:1 1:1 1:1
Pot life at 25℃mins 60 60 60
De-molding time at 25℃ (H) 24 24 24
De-molding time at 50℃ (H) 4-6 4-6 4-6
De-molding time at 100℃ (H) 1-2 1-2 1-2
De-molding time at 150℃ (H) 0.5-1 0.5-1 0.5-1
After
curing
Hardness Shore A 30-40 30-40 30-40
Elongation break% 50-60 50-60 50-60
Tear strength(KN/m) 1.8 1.8 1.8
Tensile Strength(Mpa) 0.5-1.5 0.5-1.5 0.5-1.5
Volume resistivity/Ω.cm ≥1014
≥1014
≥1014
Break down voltage(kv/mm) ≥15 ≥15 ≥15
Specific inductive capacity(50Hz) 2.7-3.3 2.7-3.3 2.7-3.3
Dielectric loss factor(50Hz) ≤0.02 ≤0.02 ≤0.02
Thermal conductivity ≥0.3 ≥0.8 ≥0.8

concrete stamps, wet-cast paves and slabs,and countertop sink plugs. Available in hardness ranging from Shore A50 to
A60.Especially for no figure and undercuts,
available in hardness shore A60.
Typical properties
Package:
Per Kilogram:5kg/plastic drum,20kg/plastic drum,25kg/iron drum,27kg/iron drum,200kg/iron drum
Per Carton: 5kg drum, 20kg/carton
Per Pallet:20kg/carton,27carton/pallet ;25kg/drum,18 barrel or 24 barrel/pallet;200kg/drum,4 barrel/pallet
Notice:
 Shelf life of product is reduced after opening. Remaining product should be used as soon as possible.Immediately
replacing the lids on both containers after dispensing product will help prolong the shelf life of the unused product.
 A release agent is necessary to facilitate de-molding when casting into or over most surfaces.
 Liquid urethane are moisture sensitive and will absorb atmospheric moisture.
 Mixing tools and containers should be clean and made of metal or plastic. Materials should be stored and used in a
warm environment (73°F/23°C).
 Specification can according to customer’s specific requirements adjust.
Item NO. U10 U20 U30 U40 U50 U60
Appearance White/Beige White/Beige White/Beige White/Beige White/Beige White/Beige
A:B Mix Ratio 1:2/1:1 1:2/1:1 1:2/1:1 1:2/1:1 1:2/1:1 1:2/1:1
Pot life time(mins) 30 30 30 30 30 30
Hardness Shore A 10 20 30 40 50 60
Viscosity(cpa.s) 1000-2000 1000-2000 1000-2000 1000-2000 1000-2000 1000-2000
De-molding time(hrs) 16 16 16 16 16 16
Tear strength(Pli) 38 60 78 82 102 136
Tensile Strength(Psi) 200 200 500 522 588 880
Elongation break (%) 1000 1000 1000 660 400 480
Shrinkage(in.in) <0.001 <0.001 <0.001 <0.001 <0.001 <0.001

EASY MOLDING SILICONE PUTTY
RX silicone putty product is a new silicone compounds (platinum catalyst),
and strong ,flexible mold making material.This putty has a working time
of 4-20 minutes, cures in 20-60 minutes and exhibits no shrinkage after
curing. No releasing agent is necessary.
Silicone Putty Products is applied by hand to a variety of surfaces, is
mixed in equal amounts (1A:1B) by volume and is categorized as food-grade
safe so it can be used in some baking applications (can be heated up to
400F/204C)
Application:
Plaster, plaster mixes, concrete, wax, soap, low-melt metals, chocolate, ice cubes, resins and air dry clay and quick simple
flexible rubber molds.
Advantages:
 Ideal for small molds, excellent detail from original
 Strong, flexible, reusable molds
 Self releasing, no mold release agent required for most applications.
 FDA Compliant - Food Grade
 For use in jewelry making including pendants, charms and earrings.
 High heat range, up to 400 degrees Fahrenheit.
 No shrinkage.
Technical Data:
Item NO. Appearance Mix ratio
Working
time(min)
De-molding
time(min)
60-120℃
P04 white 1:1 4 20-30 5min
P20 white 1:1 20 60 10min
Instructions for use:
This product is mixed by hand. If you choose to wear gloves, wear vinyl gloves only.
Latex gloves will inhibit the cure of the rubber.
 Simply measure equal parts by volume of part A and part B into two separate equal sized balls.
 Knead part A and part B together with your hands until uniform in color (light blue). The heat from your hands will help
activate the product. Once the color is uniform, you are ready to begin your mold
 Press the kneaded mixture onto the surface of the object you wish to replicate
 Press firmly to ensure putty covers all surface areas. If covering a large surface, you may work in small sections and in
batches
 To eliminate air bubbles in your mold, begin pressing in the lowest surface points working outward to high points

Shelf life & Storage:
250g/500g/1kg bottle package.
12 months in unopened containers stored at room temperature(25℃)
Notice:
Do not eat. KEEP OUT OF REACH OF SMALL CHILDREN. Adult supervision recommended. Ingredients may cause eye
irritation, skin redness, and sensitization. If skin redness develops, discontinue use and wash affected area with soap and
water. If material gets into eyes, wash eyes with plenty of water.
POLYURETHANE RESIN FOR CASTING/ POLYURETHANE PLASTIC
RX-PU70-80 is a low viscosity casting that are beige or white color with ratio 1:1,polyurethane liquid casting plastic that has
a 2-3 minutes working time and 10 minutes de-mold time under the temperature 25℃.RX-PU70-80 are excellent for casting
decorative objects,prototypes,scale models, sculptural reproductions, duplicate masters.Production parts, fixtures, tools
and more.
Features:
1.Tough,non-brittle
2.1:1 mix by weight
3.Can be machined,drilled,sanded
4.Variable working time.
5.Easy mix and pour
Technical overview:
Preparation:
1.Safety materials should be stored and used in a warm environment(23℃).These products have a limited shelf life and
should be used as soon as possible.All Liquids urethane are moisture sensitive and will be absorb atmospheric moisture.
2.Mixing tools and containers should be clean and made of metal,lass or plastic.Mixing should be done in a well-ventilated
area.Wear safety glasses,long sleeves and rubber gloves to minimize contamination risk.
Item
NO.
Appeara
nce
Viscosity
Mpa.s
Hardnes
s
Shore D
Tear
strength
(KN/m)
Tensile
Strength
(Mpa)
Elongati
on break
(%)
Linear
Shrinkage
(%)
Working
Time(min)
De-molding
Time(min)
PU70
Beige/wh
ite
50-100 70 700 20 500 ≤0.1 3 30
PU80
Beige/wh
ite
50-100 80 700 20 500 ≤0.1 3 30

Important:
Shelf life of products is reduced after opening,.Remaining products should be used as soon as possible.Immediately
replacing the lids on both containers after dispensing product will help prolong the shelf life of the unused product.
Notice:
Cured reaction will rises the temperature, avoid touching.Avoid splashing into water.
OUR PACKAGE

The Promise
Whatever special kind of silicone rubber you need, look to Rongxin, If you want a rubber molding company that is
experienced enough to know the best manufacturing methods and dedicated to customer service enough to
provide value and attention to customers, then you've come to the right place!
We strictly abide by our "Customer First" principle, we provide high quality, innovative solutions to the evolving
needs of our customers and fast shipping. We will help you find what you need or make it for you!
No matter what your application, Rongxin's world-class technical personnel will help select and customize one of
our products to work for you. We’re that flexible.
Office Address: 804 Room, 8F, Tianfuxing Building, Liuxian Road, Longhua, Shenzhen, China
Factory Address: NO.16, Tianxin Industry Zone, Tangxia, Dongguan, China
Web: www.rtv-2.com Email: ivy@rtv-2.net
Tel: 0086-755-29815831 Mob: 0086-13421359156

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