The Complete List of Suppliers for 1,4,5,8-Naphthalenetetracarboxylic dianhydride

CAS No.81-30-1 High purity Various Specifications naphthalene-1,4,5,8-tetracarboxylic acid CAS:81-30-1

Assay:98%min Appearance:white powder Package:By foil-alum bag or pap Storage:Place in a dry, ventilated place. Transportation:By courier, air or sea.  Application:intermediate 

Min. Order:1Gram

Supplier:Hangzhou Dingyan Chem Co., Ltd [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:99%min. Appearance:white powder Package:1kg/Export worthy packing; 25kg/drum Storage:In well-closed container, protected from light and in cool & dry place. Transportation:By Air, By Sea, By courier (door to door, DHL/FedEx/UPS) Application:R&D and production for pharmaceuticals and chemicals 

Min. Order:1Gram

Supplier:LIDE PHARMACEUTICALS LIMITED [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:99% purity Appearance:Light brown solid Package:According to the need to packing Storage:sealed,dry,low temperature Transportation:air,sea and courier Application:reagent 

Min. Order:1Gram

Supplier:Shanghai Minstar Chemical Co., Ltd [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride Manufacturer/High quality/Best price/In stock

Assay:98% Appearance:detailed see specifications Package:according to the clients requirement Storage:Store in dry, dark and ventilated place. Transportation:by sea or by air Application:It is an important raw material and intermediate used in Organic Synthesis, Pharmaceuticals, Agrochemicals and Dyestuff. 

Min. Order:1Kilogram

Supplier:Dayang Chem (Hangzhou) Co.,Ltd. [ China (Mainland)]

CAS No.81-30-1 81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:99.5% Appearance:white powder Package:As required Storage:room tempurature Transportation:by Sea Application:Organic Chemicals 

Min. Order:1Metric Ton

Supplier:HENAN NEW BLUE CHEMICAL CO.,LTD [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:99% Appearance:powder or liquid Package:according to customer requirements Storage:store in dry dark and ventilated place Transportation:By Sea/Air/Courier Application:It is an important raw material. 

Min. Order:10Gram

Supplier:Zibo Hangyu Biotechnology Development Co., Ltd [ China (Mainland)]

CAS No.81-30-1 High Quality 1,4,5,8-Naphthalenetetracarboxylic Dianhydride in stock

Assay:99% Appearance:Light yellow powder Package:25kg/drum Storage:Cool and dry place Transportation:by sea or by air, express for small quantity Application:CAS: 81-30-1 

Min. Order:1Kilogram

Supplier:Siwei Development Group Ltd. [ China (Mainland)]

CAS No.81-30-1 Naphthalene-1,4,5,8-tetracarboxylic acid dianhydride

Assay:99% Package:According client's requirements Storage:Sealed and preserved Transportation:By sea/By air/By courier Application:Chemical raw materials 

Min. Order:1Kilogram

Supplier:Hangzhou ZeErRui Chemical Co., Ltd. [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:99%min Appearance:detailed see specifications Package:According client's requirements Storage:Inert atmosphere,Room Temperature Transportation:By air(EMS or EUB or FedEx or TNT ect...) or by sea(FOB or CIF or CNF ect...)or according to your demand. Application:intermediates in organic synthesis  

Min. Order:1Gram

Supplier:Hangzhou Lingrui Chemical Co.,Ltd. [ China (Mainland)]

CAS No.81-30-1 Naphthalene-1,4,5,8-tetracarboxylic acid dianhydride/High quality/Best price/In stock

Assay:99% Appearance:Brown powder Package:According to customer requirements Storage:Sealed and preserved Transportation:Sea or Air Application:Medical research field 

Min. Order:1Gram

Supplier:Qingdao Beluga Import and Export Co., LTD [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride 81-30-1

Assay:99% Appearance:white Package:According yo your request Storage:Room Temprature Transportation:We will pack and ship according to your requirements Application:The pharmaceutical industry; Food additives; Catalyst; Agrochemical industry; Organic chemicals; Inorganic chemical 

Min. Order:1Kilogram

Supplier:Hebei Nengqian Chemical Import and Export Co., LTD [ China (Mainland)]

CAS No.81-30-1 Naphthalene-1,4,5,8-tetracarboxylic acid dianhydride/High quality/Best price/In stock

Assay:99.0% Appearance:liquid Package:Grams, Kilograms Storage:Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials. Transportation:According to customer request Application:For R&D and commerical use 

Min. Order:100Gram

Supplier:Chemlyte Solutions [ China (Mainland)]

CAS No.81-30-1 Factory price high quality 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:99% Appearance:Light yellow powder Package:25kg/drum Storage:R.T Transportation:Express/Sea/Air Application:1,4,5,8-Naphthalenetetracarboxylic dianhydride can be used as a chemical and pharmaceutical intermediate, which can be used in laboratory research and development and chemical and pharmaceutical synth 

Min. Order:1Kilogram

Supplier:Hangzhou Sartort Biopharma Co., Ltd [ China (Mainland)]

CAS No.81-30-1 Naphthalene-1,4,5,8-tetracarboxylic acid dianhydride/High quality/Best price/In stock

Assay:99% Appearance:White Powder Package:25kg/drum, also according to the clients requirement Storage:Store In Dry, Cool And Ventilated Place Transportation:By Sea Or By Air Application:It is widely used as a thickener, emulsifier and stabilizer 

Min. Order:1Kilogram

Supplier:EAST CHEMSOURCES LIMITED [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:98% Package:According to customer requirements Transportation:by sea or by air Application:chemical synthesis 

Min. Order:25Gram

Supplier:Shanghai Scochem Technology Co., Ltd. [ China (Mainland)]

CAS No.81-30-1 [2]Benzopyrano[6,5,4-def][2]benzopyran-1,3,6,8-tetrone

Assay:99% Appearance:White fine powder Package:according to the clients requirement Storage:Store in dry dark and ventilated place Transportation:Transportation by express, air, sea; port mainly to Qingdao / Tianjin / Shanghai, or according to customer needs to send different ports and aviation. Application:It is an important raw material. 

Min. Order:1Kilogram

Supplier:Shandong Hanjiang Chemical Co., Ltd. [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:HPLC鈮?8% Appearance:powder Storage:Sealed in dry,Room Temperature Transportation:by express or by sea Application:for pharma use 

Min. Order:0

Supplier:Hangzhou Shanyi Biotechnology Co., Ltd. [ China (Mainland)]

CAS No.81-30-1 naphthalene-1,4,5,8-tetracarboxylic acid

Assay:99% Appearance:powder Package:Depended Storage:Stored in shaded, cool and dry places Transportation:Handle with cares to avoid damaging the packages. Protect them from sunshine or rain. We can send by Fedex, by ship or by plane according to international rules. Application:pharma intermediate 

Min. Order:0

Supplier:Antimex Chemical Limied [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:99% Appearance:White powder Package:200/Kilograms Storage:Sealed and preserved Transportation:By sea Application:Fine chemical intermediates, used as the main raw material for the synthesis of various pesticides, medicines, surfactants, polymer monomers, and antifungal agents 

Min. Order:0

Supplier:GIHI CHEMICALS CO.,LIMITED [ China (Mainland)]

CAS No.81-30-1 Isochromeno[6,5,4-def]isochromene-1,3,6,8-tetraone

Assay:99% Appearance:Solid Storage:Protect from light and keep dry Application:Pharmaceutical intermediates 

Min. Order:0

Supplier:ORCHID CHEMICAL SUPPLIES LTD [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:鈮?9% Application:Chemical intermediate 

Min. Order:0

Supplier:HANGZHOU TIANYE CHEMICALS CO., LTD. [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:98% Application:For research use only. 

Min. Order:0

Supplier:HEBEI SHENGSUAN CHEMICAL INDUSTRY CO.,LTD [ China (Mainland)]

CAS No.81-30-1 [2]Benzopyrano[6,5,4-def][2]benzopyran-1,3,6,8-tetrone

Assay:98%min Appearance:Off-white to light yellow powder Package:According to the clients requirement. Storage:Keep in cool place. Application:Pharmaceutical intermediates 

Min. Order:0

Supplier:Hangzhou J&H Chemical Co., Ltd. [ China (Mainland)]

CAS No.81-30-1 cas 81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:99% Appearance:Off-White to Light Beige Solid Package:A variety of packing ways for your choice Storage:Keep it in dry,shady and cool place Transportation:by Sea, by Air, by Land/EMS/TNT/DHL/ Application:Pharma;Industry;Agricultural;chemical reaserch 

Min. Order:1Kilogram

Supplier:Hubei Jiutian Bio-medical Technology Co., Ltd [ China (Mainland)]

CAS No.81-30-1 High Purity 1,4,5,8-Naphthalenetetracarboxylic dianhydride/ NTDA/ Aids-125787

Assay:99% Appearance:White powder Package:10g/bag; 100g/bag; 1kg/bag Storage:Cool Dry Place Transportation:FOB/EXW/DDP/DAP/CIF/CIP Application:Pharmaceutical raw materials 

Min. Order:10Gram

Supplier:Xi'an Faithful Biotech Co., Ltd. [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:99.0% min Appearance:Highest quality appearance Package:25kgs/drum锛?00kg/drum锛汭BC TANK Storage:Keep in dry and well ventilated warehouse, keep sealed Transportation:By air and by sea Application:Extremely good quality, widely used in Pharmaceutical Industry, Food Industry, agricultural industry etc. 

Min. Order:1Kilogram

Supplier:Hangzhou Johoo Chemical Co., Ltd [ China (Mainland)]

CAS No.81-30-1 Naphthalene-1,4,5,8-tetracarboxylic acid dianhydride/High quality/Best price/In stock

Assay:鈮?9.0% Appearance:White powder Package:25kg drum/bag Storage:Keep in dry and cool place Transportation:by Sea, air and express Application:銆?Use 1 銆? A nutritional supplement. One of the essential amino acids in the human body. Because the price is higher than DL-methionine and the effect is equal, DL-methionine is often used. 銆?Use  

Min. Order:1Metric Ton

Supplier:KAISA GROUP INC [ United States]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:99% Package:box or opp package Storage:cool drum  Transportation:air or sea Application:1,4,5,8-Naphthalenetetracarboxylic dianhydride 

Min. Order:1Milligram

Supplier:weifang yangxu group co.,ltd [ China (Mainland)]

CAS No.81-30-1 CAS NO.:81-30-1

Assay:99% Appearance:white powder Package:drum Storage:Room temperature Transportation:By Sea/Air/DHL Application:Pharmaceutical intermediates 

Min. Order:0

Supplier:Henan Wentao Chemical Product Co., Ltd. [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:99% Appearance:powder Package:1kg/bag; 25kg/drum, or as customer's request. Storage:Far from fire and heat, keep in cool place Transportation:DHL, EMS, FedEx, TNT, AIR, SEA Application:Pharma grade & Food grade 

Min. Order:0

Supplier:DB BIOTECH CO., LTD [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:99 Appearance:powder, or liquid Package:Bottle, barrel, cargo, container, etc. Storage:Stored in room temperature, ventilated place Transportation:By air, ship, express, etc. Application:Pharmaceuticals, intermediates, APIs, custom synthesis, chemicals 

Min. Order:0

Supplier:LEAP CHEM Co., Ltd. [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride(NTDA)

Assay:99% Appearance:White to Off-White Solid Package:as your requirement Storage:Keep it in dry,shady and cool place Transportation:by Sea, by Air, by Land/EMS/TNT/DHL/ Application:Pharma;Industry;Agricultural;chemical reaserch 

Min. Order:0

Supplier:Wuhan Circle Star Chem-medical Technology co.,Ltd. [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:99% Application:API 

Min. Order:0

Supplier:Wuhan Bright Chemical Co., Ltd. [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:99% Application:API 

Min. Order:0

Supplier:Xian Changyue Biological Technology Co., Ltd. [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:99% Appearance:Off-white powder Package:25kg/drum Storage:Store in cool and dry place, away from sun light. Transportation:By sea or by air  Application:organic synthesis 

Min. Order:1Kilogram

Supplier:Henan Sinotech Import&Export Corporation [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride Double-ring compound

Assay:98% Appearance:white powder Package: according to customers' requirements Storage:2-8掳C Transportation:Air, sea, land transport Application: A monomer used for the synthesis of high-temperature polymer materials and an intermediate for dyes and pigments 

Min. Order:1Kilogram

Supplier:Baoji Guokang Healthchem co.,ltd [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:98% Appearance:Please contact us for product details Package:As per shipment requirement  Storage:Store in cool & dry place, stored in well-closed containers Transportation:air, sea Application:intermediate 

Min. Order:1Kilogram

Supplier:NANJING SUNNY PHARMATECH CO., LTD [ China (Mainland)]

CAS No.81-30-1 Top Pure CAS 81-30-1 with competitive price

Assay:99% Appearance:White powder Package: [Packaging]20mg, 50mg,100mg,1g,10g,100g,according to customers' requirements Storage: should be stored in a well-closed container at low temperature, keep away from moisture, heat and light. Transportation:1. Samples 1kg-10kg are shipped by international express. 2. 50kg-100kg of goods are transported by dedicated line logistics. 3. Cargo 100kg-1ton is transported by dedicated line logistics. Application:Raw materials in the pharmaceutical field 

Min. Order:10Kilogram

Supplier:Zhuozhou Wenxi import and Export Co., Ltd [ China (Mainland)]

CAS No.81-30-1 Naphthalene-1,4,5,8-tetracarboxylic acid dianhydride/High quality/Best price/In stock

Assay:99% Appearance:liquid or powder  Package:according to the clients requirement Storage:Dry and Cool Place  Transportation:UPS FedEx ,DHL,EXPRESS LINE Application:healing drugs 

Min. Order:1Gram

Supplier:Shandong Mopai Biotechnology Co., LTD [ China (Mainland)]

CAS No.81-30-1 Enke 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:98% Appearance:solid Package:DRUM Storage:normal temperature Transportation:AIR,SEA Application:mainly for medical use for R&Dpurpose use only 

Min. Order:1Kilogram

Supplier:Enke Pharma-tech Co.,Ltd. 锛圕angzhou, China 锛?/a> [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:99% Haccp,,Halal,SC US FDA GMP ISO14001 Appearance:As per Certificate of analysis and our TDS, MSDS Package:Export standard and according to the clients requirement Storage:Store in dry, dark and ventilated place;ISO / Kosher /GMP licence commercial bulk capacity factory in China Transportation:By AIR or by SEA GMP licence / US-FDA,South Korea-KFDA Application:It is an important raw material and intermediate for chemical industry. 

Min. Order:5Kiloliter

Supplier:Chemwill Asia Co., Ltd. [ China (Mainland)]

CAS No.81-30-1 (2S,3S)-2-amino-3-hydroxy-3-phenylpropanoic acid

Assay:97% Appearance:Powder or liquid Package:According to customer Storage:Store in a tightly closed container, in a cool and dry place. Transportation:Fedex,DHL,TNT,BY SEA and BY AIR Application:Medicinal Chemistry Biomedicine Pharmaceutical intermediates Chemistry experiment Biological experiments Chemical reagent For R&D use only. 

Min. Order:10Milligram

Supplier:Amadis Chemical Co., Ltd. [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-naphthalenetetracarboxylic dianhydride

Assay:99.0% Appearance:Clear, colorless liquid Package:according to your requirement Storage:Store in a dry, dark and ventilated place Transportation:by air/by sea /by train Application:lt is an important raw material and intermediate used in Organic Synthesis, Pharmaceuticals, Agrochemicals and Dyestuff. 

Min. Order:1Kilogram

Supplier:Suzhou Senfeida Chemical Co., Ltd [ China (Mainland)]

CAS No.81-30-1 Naphthalene-1,4,5,8-tetracarboxylic acid dianhydride/High quality/Best price/In stock

Assay:99% Appearance:white powder Package:drum or based on customers' requirement Storage:normal temperature storage Transportation:by sea, by air Application:We have different specifications for different applications 

Min. Order:1Metric Ton

Supplier:Bluecrystal chem-union [ China (Mainland)]

CAS No.81-30-1 Cas no.81-30-1 98% 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:98% Appearance:Off-White to Light Beige Solid Package:Grams, Kilograms Storage:Room Temperature Transportation:According to customer request Application:For R&D 

Min. Order:1Metric Ton

Supplier:Win-Win chemical Co.Ltd [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:99.3% Appearance:white or Almost colorless Package:2.5kg or 5kg Transportation:Air freight, sea freight, and express delivery Application:intermediate 

Min. Order:4Kilogram

Supplier:SHANGHAI T&W PHARMACEUTICAL CO., LTD. [ China (Mainland)]

CAS No.81-30-1 Acmec Isochromeno[6,5,4-def]isochromene-1,3,6,8-tetraone 500g

Assay:96% Appearance:See the datasheet Package:500g Storage:RT Transportation:By Express, Air and Road Application:Analytical reagent, biochemical reagent, standard 

Min. Order:1bottle

Supplier:Shanghai Acmec Biochemical Technology Co., Ltd. [ China (Mainland)]

CAS No.81-30-1 Factory Supply naphthalene-1,4,5,8-tetracarboxylic acid

Assay:99% Appearance:powder or granule ( refer to COA) Package:25kgs/fiber drum Storage:Keep in a cool & dry place Transportation:by sea or by air Application:Librium, Valium 

Min. Order:0Metric Ton

Supplier:Ality Chemical Corporation [ China (Mainland)]

CAS No.81-30-1 Naphthalene-1,4,5,8-tetracarboxylic acid dianhydride/High quality/Best price/In stock

Assay:99% Package:According to the customer request Transportation:According to the customer request Application:intermediate of Antimicrobial agent and Antioxidant  

Min. Order:100Gram

Supplier:SHANGHAI SYSTEAM BIOCHEM CO., LTD [ China (Mainland)]

CAS No.81-30-1 low price 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:99% Appearance:colourless to light yellow liquid Package:R&D,Pilot run Storage:Room temperature Transportation:per client require Application:Used as dye intermediates 

Min. Order:0Metric Ton

Supplier:Hunan chemfish Pharmaceutical co.,Ltd [ China (Mainland)]

CAS No.81-30-1 Naphthalene-1,4,5,8-tetracarboxylic acid dianhydride

Assay:97% Appearance:white crystalline powder Package:according to the clients requirement Storage:Room temperature with sealed well Transportation:by sea or by air Application:Use as primary and secondary intermediate 

Min. Order:0

Supplier:BOC Sciences [ United States]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride 81-30-1

Assay:96% Appearance:solid or liquid Package:Foil bag; Drum; Plastic bottle Storage:in sealed air resistant place Transportation:by sea or air Application:Pharma;Industry;Agricultural 

Min. Order:0

Supplier:Hunan Russell Chemicals Technology Co.,Ltd [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride CAS No.81-30-1

Assay:99.90% Appearance:solid or liquid Package:As customer's requested Storage:sealed in cool and dry place Transportation:by courier/air/sea Application:Pharma Intermediate 

Min. Order:0

Supplier:Guangdong Juda Chemical Industrial Co.,Limited [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:HPLC鈮?8% Appearance:powder Storage:Sealed in dry,Room Temperature Transportation:by express or by sea Application:for pharma use 

Min. Order:0

Supplier:Falcon Life Sciences Pvt. Ltd [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride manufacturer

Assay:99% Appearance:white powder Package:According client's requirements Storage:keep sealed and keep from direct light Transportation:by express or by sea Application:pharmaceutical 

Min. Order:0

Supplier:Shanghai Yuanye Bio-Technology Co., Ltd. [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:98.5% Appearance:white/off-white or light yellow Package:aluminum bottle,glass bottle,PTFE bottle,cardboard drum Storage:Store in cool and dry place, keep away from strong light and heat. Transportation:by courier, by air, by sea Application:This product can be used in food/pharmaceutical/cosmetical industry 

Min. Order:0

Supplier:Suzhou Health Chemicals Co., Ltd. [ China (Mainland)]

CAS No.81-30-1 Naphthalene-1,4,5,8-tetracarboxylic acid dianhydride/High quality/Best price/In stock

Assay:99% Application:Naphthalene-1,4,5,8-tetracarboxylic acid dianhydride/High quality/Best price/In stock 

Min. Order:0

Supplier:Wuhan 90000 Lithium Industry and Trade Co., Ltd. [ China (Mainland)]

CAS No.81-30-1 1,4,5,8-Naphthalenetetracarboxylic dianhydride

Assay:98% Application:For research use only. 

Min. Order:0

Supplier:Qingdao Bravery International Trade Co., Ltd [ China (Mainland)]

CAS No.81-30-1 Naphthalene-1,4,5,8-tetracarboxylic Dianhydride (purified by subliMation)

Assay:98% Package:According to the demand of customer Storage:Sealed, dry, microtherm , avoid light and smell. Transportation:by air or by sea Application:Organic synthesis 

Min. Order:0

Supplier:Henan Allgreen Chemical Co.,Ltd [ China (Mainland)]

• Dayang Chem (Hangzhou) Co.,Ltd.
• HENAN NEW BLUE CHEMICAL CO.,LTD