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NT CAT PC-8 CAS No.:98-94-2 N,N-Dimethylcyclohexylamine Overview: Common Name: N,N-Dimethylcyclohexylamine Other Chemical Names: DMCHA; N,N-Dimethylcyclohex;LupragenN100Dimethylcyclohexy , lamine); N,N- Dimethylcyclohexylamine(LupragenN100); N- CyclohexyldimethylamineDimethylChemicalbooka , minocyclohexane; N,N- diMethylcyclohaxylaMine; Cyclohexanamine,N,N-dimethyl-; Cyclohexylamine,N,N- dimethyl-; Cyclohexylamine,N,N-dimethyl- MF： C8H17N MW： 127.23 CAS： 98-94-2 Typical Properties Appearance Form: clear, liquid Colour: colourless PH 12 at 5 g/l at 20 °C Melting point/freezing point Melting point/range: -60 °C Initial boiling point and boiling range 160 - 161 °C - lit. Flash point 43 °C - closed cup Upper/lower flammability or explosive limits Upper explosion limit: 19 %(V) Lower explosion limit: 3,6 %(V) Upper explosion limit: 19 %(V) Lower explosion limit: 3,6 %(V) Vapour pressure 0.0399kPa at 20 °C Vapour density 2.53 Relative density 0,87 g/cm3 at 25 °C Description NT CAT PC-8 is a tertiary amine used primarily to promote the urethane (polyol-isocyanate) reaction in a wide range of rigid foam applications. Applications NT CAT PC-8 is recommended for evaluation in a broad range of rigid foams. A major application is insulation foams, including spray, slabstock, board laminate and refrigeration formulations. NT CAT PC-8 is also used in rigid foam furniture frame and decorative parts manufacturing. It can be batched with the polyol or metered as a separate stream. Storage Information NEWTOP Chemical recommends that our catalysts be stored in a dry and cool area under appropriate ventilation conditions. Each container should be closed tightly to avoid contamination with moisture or other negative influences that could change the products’ performance in the end use. The optimum storage temperature is between 10 °C and 30° C. Lower and higher storage temperatures are not preferable and should be avoided. Shelf Life: 24 Months Standard Packaging: 170KG Steel Drum 850KG IBC Drum (Polycat 8, Niax C-8, Jeffcat DMCHA, Lupragen N100 Tegoamin DMCHA, PC CAT DMCHA, Toyocat DMCHA)

Minimum Order: 100

4-溴丁酸乙酯 CAS： 2969-81-5 Ethyl 4-bromobutyrate CAS： 2969-81-5 Overview: Common Name：Ethyl 4-bromobutyrate Other chemical name: 4- Bromobutanoicacid,ethylester;BrCH2CH2CH2C(O) , OC2H5;Butanoicacid,4- bromo-,ethylester;Ethylga , mma-bromoChemicalbookbutyrate;ETHYL4-BROMO-N- B , UTYRATE;ETHYL4-BROMOBUTYRATE;ETHYLGAMMA-BROMO-N-BU , TYRATE;ETHYLG- BROMOBUTYRATE MF： C6H11BrO2 MW： 195.05 CAS： 2969-81-5 Melting Point: 98-100°C Boiling Point: 80-82°C/10mmHg(lit.) Density: 1.363g/mL at 25°C(lit.) Refractive Index: n20/D1.456(lit.) Flash Point: 195°F Storage Conditions：Keep in dark place ,Inertatmosphere, Roomtemperature Chloroform： (Sparingly), EthylAcetate (Slightly), Methanol (Sparingly) Form： Liquid Specific Gravity: 1.363 Color: Clear colorless to yellow Water Solubility: Immiscible purity: ≥97% Features and uses: Ethyl 4-bromobutyrate is a carboxylate derivative, which is colorless and transparent to yellow liquid. It can be used as Intermediates for epilepsy drugs. It can also used as a pesticide and pharmaceutical intermediate, and can be used in laboratory research and development process and chemical production process. Storage Information： Keep in dark place ,Inertatmosphere, Roomtemperature

Minimum Order: 10 long tons

PU Catalyst: BDMA (benzyldimethylamine) CAS:103-83-3 Over view: Common Name: Benzyl Dimethyl Amine Other Chemical Names: N,N-Dimethylbenzylamine, Benzenemethamine, N,N- dimethyl-;Benzenemethanamine,N,N-dimethyl- , ;Benzylamine, Physical and chemical properties: Appearance Form: transprant light yellow liquid Odour no data available PH 10 at 10 g/l at 20 °C Melting point/freezing point Melting point/range: -75 °C - lit. Initial boiling point and boiling range 181 - 184 °C at 1.020 hPa - lit. F , lash point 53 °C - closed cup Evaporation rate no data available Flammability (solid, gas) Upper explosion limit: 6,3 %(V) Upper/lower flammability or explosive limits Lower explosion limit: 0,9 %(V) Relative density 0,9 g/cm3 at 25 °C Water solubility soluble Partition coefficient: noctanol/water log Pow: 1,87 Molar formular C9H13N Molar mass 135.21 Features and uses: A liquid tertiary amine catalyst. Can improve foam cure and demolding time. It is an excellent candidate to consider for use in water-NCO reaction in rigid polyurethane foams. BDMA is typically suitable to replace DMCHA in formulations using a high level of water as blowing or co-blowing agent can reduce surface friability and improve adhesion of foam to substrates. BDMA promotes the urethane reaction and is commonly used in high-water rigid foam applications to reduce friability. It has a characteristic but low amine odor, and is soluble in water and in most organic solvents. BDMA is used in flexible slabstock and rigid foam applications. It promotes the urethane reaction and is commonly used in high-water rigid foam applications to reduce friability. BDMA is also used for flexible slabstock foam applications. Storage Information ： Recommends that our catalysts be stored in a dry and cool area under appropriate ventilation conditions. Each container should be closed tightly to avoid contamination with moisture or other negative influences that could change the products' performance in the end use. Package: 180KG/Steel Drum (DABCO BDMA/Niax BDMA/ PC Cat NP60/ Addocat DB/ Jeffcat BDMA/ Lupragen N103)

Minimum Order: 100

Pu catalyst: K-15 Active ingredients: CAS:3164-85-0 Overview: Common name: Potassium isooctanoate solution Other Chemical names: Potassium2-ethylhexanoate,99.9%(metalsbasis),7 , 5%w/wsoln.;PotassiuM2- ethylhexanote;PotassiuM2 , -Ethylhexanoatehydratate;KaliumOctoate;Potassium2- , ethyChemicalbooklhexanoatesolution,75wt.%solut , ion,99.9%tracemetalsbasis;2- ethyl-hexanoicacip , otassiumsalt;2-ETHYLHEXANOICACIDPOTASSIUMSALT;POTA , SSIUM2- ETHYLHEXANOATE Solution Physical and chemical properties: Appearance: Liquid. Color: Colorless. Odor: No odor. Relative density: 1.13 (water=1) Vapor pressure: < 19.20 mmHg at 21 °C Density: 70.544 lb/ft3 (1.13 g/cm3) at 70 °F (21 °C) Point Boiling Point/Range: > 572 °F (> 300 °C) Flash point: 137.78 °C Viscosity: 6000~1200mPas(25 °C) Water solubility: completely dissolved. Product use: Polyurethane catalyst Features and uses: Used in the production of rigid isocyanate foams.  K-15 is a solution of potassium-salt in diethylene glycol. It promotes the isocyanate reaction and is used in a wide range of rigid foam applications. For better surface curing, improved adhesion and better flow alternatives, consider TMR-2 catalysts. K-15 is an excellent and cost-effective isocyanate catalyst. Its high conversion rate has established it as the catalyst of choice in a number of rigid applications. Storage Information Recommends that our catalysts be stored in a dry and cool area under appropriate ventilation conditions. Each container should be closed tightly to avoid contamination with moisture or other negative influences that could change the products' performance in the end use. Package: 200KG/Steel Drum

Minimum Order: 100

PU catalyst： MB20 CAS#: 34364-26-6 Overview: Common Name: BISMUTH NEODECANOATE Other Chemical Names: Neodecanoicacid,bismuth(3+)salt;neodecanoicaci , d,bismuth(3++)salt;BISMUTHNEODECA NOATE;BIS , MUTH , (III)NEODECANOATE;bismuth(3+)neodecanoate;BISMUChe , micalbookTHNEODE CANOATE,TECH;Bismuth(III)n , eode , canoate,superconductorgrade~60%inneodecanoicac , id(< , br>15- 20%Bi);Bismuth(III)neodecanoate,super , conduct , orgrade a) Appearance and Properties: Liquid Color: light yellow transparent b) Boiling point, initial boiling point and boiling range 180 °C c) Flash point 158 °C - closed cup d) Evaporation rate No data available e) Flammability (solid, gas) no data available f) high/low flammability or explosiveness limits no data available g) Vapor pressure 0.60mmHg at 21 °C h) Vapour density No data available i) Density/relative density 1.22 g/cm3 at 25 °C j) water soluble insoluble k)n-octanol/water partition coefficient no data available l) Autoignition temperature no data available m) Decomposition temperature no data available n) Viscosity 50mPa.s at 25 °C Features and uses: MB20 is used as a catalyst in the polyurethane industry, showing high catalytic activity, and is widely applicable to spray, high density elastomer, and microcellular elastomer systems. Has the following characteristics: A powerful gel catalyst to promote the completion of the reaction in the later stage; It shows that the viscosity of the system is delayed when the level of intermolecular reaction is low in the early stage of the reaction; Environmentally friendly products that can replace lead and tin-containing catalysts; In the common polyurethane reaction system, the microcellular elastomer system and the high-density semi-rigid foam system enhance the stability of the system reaction. Acts as a co-catalyst with a tertiary amine to accelerate the urethane reaction and cure. Exhibits delayed viscosity build on front-end at low usage level while promoting excellent back-end cure. It is free of mercury, lead and dibutyl tin. Possesses low volatility with little or no odor. It has compatibility with common rigid and flexible foam polyols. It is an alternative to tin-based catalysts in flexible slabstock, high-density flexible foams, spray, microcellular, and rigid foam systems. Storage Information： Recommends that our catalysts be stored in a dry and cool area under appropriate ventilation conditions. Each container should be closed tightly to avoid contamination with moisture or other negative influences that could change the products' performance in the end use. Package: 25kg/Plastic Drum, 200KG/Steel Drum, 1000kg/IBC Drum

Minimum Order: 100

DMAEE CAS:1704-62-7 2-[2-(Dimethylamino)ethoxy]ethanol Overview: Common Name: 2-[2-(Dimethylamino)ethoxy]ethanol Other Chimical Names: 2-[2-(dimethylamino)ethoxy]-ethano;Ethanol, 2-2- (dimethylamino)ethoxy-;N,N-Dimethyl-2-(2-& , lt; , br>aminoethoxy)ethanol;Dimethylaminoethoxye , thanol; , N,N- Dimethyldiglycolamine;Texacat ZR-70 MF： C6H15NO2 MW：133.19 CAS： 1704-62-7 Physical and chemical properties: Form: liquid Odour: mild, amine-like Colour: colourless to yellow pH value: 11.5 ( 1.. g/l) Melting point: No data available Boiling point: 235 °C ( 1.13 hPa) Vapour pressure: < 1 mbar ( 25 °C) Density: 0.9549 g/cm3 ( 20°C) Relative density: 0.9549 ( 20 °C) Partitioning coefficient n -1.21 (calculated) octanol/water (log Pow): Viscosity, dynamic: 1. mPa.s ( 25 °C) Solubility in water: Molar mass: 133.19 g/mol Features and uses: PC-37 is colorless or light yellow liquid at room temperature, soluble in water; PC-37 is a low odor reactive catalyst for rigid packaging foam. Its structure contains active hydrogen, which can react with -NCO and combine into the system, so the smell of finished products is greatly reduced. NT CAT PC-37 can also be used for molding soft foam and polyether polyurethane soft block foam. Storage Information: Store in a cool and ventilated warehouse. Keep away from fire and heat. Protect from direct sunlight. Keep container sealed. It should be stored separately from oxidant and edible chemicals, and mixed storage is forbidden. Firefighting equipment of corresponding variety and quantity shall be provided. Package: 190KG/Steel Drum (PC37, PC-37, POLYCAT 37/Jeffcat ZR-70/DABCO DMAEE/Lupragen N107/ Toyocat RX3/equal)

Minimum Order: 100

TMEDA (N,N,N',N'-Tetramethylethylenediamine) , CAS No.110-18-9 Over view Common Name: N,N,N',N'-Tetramethylethylenediamine Ot , her Chemical Names: N,N,N',N'-Tetramethylethane-1,2-diamine, electrophoresis grade;Four MethylEthylenediaMine;N,N,N',N'-TetraMethy , lethylenediaMine Molar formular C6H16N2 Molar mass 116.2 Physical and chemical properties: a) Appearance Form: Transparent colorless liquid b) Melting point/freezing point Melting point/range: -55 °C - lit. c) Initial boiling point and boiling range 120 - 122 °C - lit. d) Flash point 20 °C - closed cup e) Evaporation rate no data available f) Flammability (solid, gas) no data available g) Upper/lower flammability or explosive limits Upper explosion limit: 9,08 %(V) Lower explosion limit: 0,98 %(V) h) Relative density 0,775 g/cm3 at 20 °C i) Water solubility soluble j) Partition coefficient: log Pow: 0,3 Features and uses: NT CAT TMEDA is a colorless-to-straw, liquid, tertiary amine with a characteristic aminic odor. It is readily soluble in water, ethyl alcohol, and other organic solvent. It is used as an intermediate in organic synthesis. It is also used as a cross linking catalyst for polyurethane rigid foams. Storage Information NEWTOP Chemical recommends that our catalysts be stored in a dry and cool area under appropriate ventilation conditions. Each container should be closed tightly to avoid contamination with moisture or other negative influences that could change the products’ performance in the end use. Package: 160KG Steel Drum (Toyocat TE/ Kaolizer 11/ Dabco TMEDA)

Minimum Order: 100

NT CAT DMP-30 CAS: 90-72-2 Tris(dimethylaminomethyl)phenol Overview: Common Name: Tris(dimethylaminomethyl)phenol Other Chemical Names: Tris(dimethylaminomethyl)phenol,2,4,6-;2,4,6-& , lt; , br>TRI(DIMETHYLAMINOETHYL)PHENOL;a,a',a , '&# , 39;- Tris(dimethylamino)mesitol;ProChemicalbook , texNX3;TAP(aminophenol);VersamineEH30 ;Tris , -(di , methylaminemethyl)phenol;2,4,6-TRIS(DIMETHYLAMINO- , METHYL)PHENOL MF：C15H27N3O MW：265.39 , CAS：90-72-2 Typical Properties Appearance Form: clear, viscous liquid Colour: light yellow Initial boiling point and boiling range 130 - 135 °C at 1 hPa - lit. Flash point 124 °C - closed cup Vapour density 9,16 - (Air = 1.0) Relative density 0,969 g/mL at 25 °C Viscosity 120~250 Features and uses: NT CAT DMP-30 is a tertiary amine accelerator, commonly used in the production of epoxy resin and polyurethane products. NT CAT DMP-30 is commonly used in epoxy resin coatings, adhesives and other industries to accelerate the reaction in curing agent systems such as polyamide, polyether amine, anhydride, and reduce the reaction temperature. NT CAT DMP-30 addition amount accounts for 5-12% of the curing dose. Storage Information Recommends that our catalysts be stored in a dry and cool area under appropriate ventilation conditions. Each container should be closed tightly to avoid contamination with moisture or other negative influences that could change the products' performance in the end use. The optimum storage temperature is between 10 °C and 30 °C. Lower and higher storage temperatures are not preferable and should be avoided. Shelf Life: 24 months Standard Packaging: 200KG Steel Drum 1000KG IBC Drum (DABCO TMR-30, PC CAT NP30, K54)

Minimum Order: 100

NT CAT T CAS:2212-32-0 2-[[2-(dimethylamino)ethyl]methylamino]ethanol , Overview: Common name: 2-[[2-(dimethylamino)ethyl]methylamino]ethanol , Other chemical names: N,N,N’-Trimethyl-N’-(2-hydroxyethyl)-1,2-ethan , ediamine; N-[2-(Dimethylamino)ethyl]-N-methylet , hanolamine;CATALYSTJD-36;N,N,N''- Trime , thyl-N''-(2-hydroxyethyl)-ethyChemicalbook , lenediamine;DABCOT;2-[Methyl[2- (dimethylamino) , ethyl]amino]ethanol;N,N,N′-trieMthylaMinoethyl-N , ′- MethylaMinoehylanol;2-[[2-(dimethylamino)e , thyl]methylamino]etanol MF： C7H18N2O MW： 146.23 Typical Properties Flash Point, °C (PMCC) 89 Viscosity @ 25 °C mPa*s1 7 Specific Gravity @ 25 °C (g/cm3) 0.91 Water Solubility Soluble Calculated OH Number (mgKOH/g) 387 Appearance Pale yellow liquid CAS： 2212-32-0 < , br> Features and uses: Applications for NT CAT T include spray foam insulation, flexible slabstock, packaging foam, automotive instrument panels and other areas where a catalyst providing low residual odor or non-migrating performance is required. The usage levels of NT CAT T are dependent on the requirements of the particular application. When producing flexible or molded foams, it is recommended that NT CAT T be used in conjunction with a strong gelling catalyst such as 33-LV catalyst. Storage Information Recommends that our catalysts be stored in a dry and cool area under appropriate ventilation conditions. Each container should be closed tightly to avoid contamination with moisture or other negative influences that could change the products' performance in the end use. The optimum storage temperature is between 10 °C and 30 °C. Lower and higher storage temperatures are not preferable and should be avoided. Shelf Life: 24 Months Equal to Dabco T/Jeffcat Z-110/Lupragen N400/PC CAT NP80/Toyocat RX5

Minimum Order: 100

Model Number:UIYDI6075A136T174P200 Frequency Range:136~174MHz Bandwidth:40% Insertion Loss:0.5dB Isolation:22dB VSWR:1.2 Forwar , d Power:200W Reverse Power:100W Connector Type:TAB Temperature:-30~+70°C Dimension:60 , *75*28mm

Minimum Order: 1 bags

Model Number:UIYSC7A56T59 Frequency Range:5.6~5.9GHz Bandwidth:15% Insertion Loss:0.4dB Isolation:20dB VSWR:1.25 Avera , ge Power:15W Peak Power:100W Connector Type:SMT Temperature:-40~+105°C

Minimum Order: 1 bags

Model Number:UIYSC12A55T6 Frequency Range：5500~6000MHz Bandwidth:20% Insertion Loss:0.3dB Isolation:23dB VSWR:1.2 Forwar , d Power:30W Reverse Power:30W Connector Type:SMT Temperature:-40~+85°C

Minimum Order: 1 bags

Part Number: TST070WVBE-64 Display Mode: TFT LCD Resolution: 800x480 Manufacturer: China Interface Type: RGB interface Warranty: 1 year Operating Temperature: -20℃~70℃ Storage Temperature: -30℃~80℃

Minimum Order: 2 barrels

Part Number: TSM256128C- B Display Mode: TFT LCD Resolution: 256x128 Manufacturer: China Interface Type: 8600 Warranty: 1 year Operating Temperature: -20℃~70℃ Storage Temperature: -30℃~80℃

Minimum Order: 2 barrels