Products

Suppliers
Filter Gallery
19,120

High Purity Alumina Powder

Products
Alumina Oxide Powder Aluminum Oxide Powder Polishing Powder White Powder Micro Powder Brown Corundum Powder

Sorry! No matches were found.

Ceramic Industry White Fused Alumina - High Purity White Fused Alumina Fine Powder

Ceramic Industry White Fused Alumina - High Purity White Fused Alumina Fine Powder

US $ 810-830 / Ton FOB
5 Tons (MOQ)
More
Main Products: White Corundum Abrasive, Brown Corundum Abrasive, Chrome Corundum Abrasive, Corundum Raw Materials, White Corundum Powder, White Corundum Sand, White Corundum Products
Contact Supplier
Since 2024
Zhengzhou Huazhijin Abrasive Co., Ltd.

Trading Company

Henan, China Since 2024
Chat Now Send Inquiry
Aluminum Oxide, Calcined Alumina Powder High Purity

Aluminum Oxide, Calcined Alumina Powder High Purity

US $ 970-1,100 / Ton FOB
3 Tons (MOQ)
More
Classification : Alumina
Contact Supplier
Audited Supplier Audited Supplier Since 2017
Zibo Gongbu Industry & Trade Co., Ltd.

Manufacturer/Factory

Shandong, China Since 2017
Chat Now Send Inquiry
High Purity 99.6% Calcined Alumina Powder for Stainless Steel Tableware Polishing Materials

High Purity 99.6% Calcined Alumina Powder for Stainless Steel Tableware Polishing Materials

US $ 460-1,500 / Ton FOB
1 Ton (MOQ)
More
Main Products: Aluminium Hydroxide, Frame Retardant Filler, Alumina Powder, Calcined Alumina, Aluminum Oxide, Zeolite, Polyaluminum Cholide, Ferrous Sulfate
Contact Supplier
Audited Supplier Audited Supplier Since 2020
Zibo Aotai New Material Technology Co., Ltd.

Manufacturer/Factory

Shandong, China Since 2020
Chat Now Send Inquiry
99.5% Min High Purity Calcined Alpha Alumina Oxide Powder for Refractory and Special Ceramic

99.5% Min High Purity Calcined Alpha Alumina Oxide Powder for Refractory and Special Ceramic

US $ 600-700 / Ton FOB
1 Ton (MOQ)
More
Material : Aluminum
Contact Supplier
Audited Supplier Audited Supplier Since 2019
ZIBO QIMINGXING NEW MATERIAL INCORPORATED CO., LTD.

Manufacturer/Factory

Shandong, China Since 2019
Chat Now Send Inquiry
China Factory High Purity 99.6% Calcined Alumina Powder for Stainless Steel Marble Polishing

China Factory High Purity 99.6% Calcined Alumina Powder for Stainless Steel Marble Polishing

US $ 460-1,500 / Ton FOB
1 Ton (MOQ)
More
Main Products: Aluminium Hydroxide, Frame Retardant Filler, Alumina Powder, Calcined Alumina, Aluminum Oxide, Zeolite, Polyaluminum Cholide, Ferrous Sulfate
Contact Supplier
Audited Supplier Audited Supplier Since 2020
Zibo Aotai New Material Technology Co., Ltd.

Manufacturer/Factory

Shandong, China Since 2020
Chat Now Send Inquiry
High Purity Calcined Alumina Oxide Alpha Powder From Zibo Manufacturer

High Purity Calcined Alumina Oxide Alpha Powder From Zibo Manufacturer

US $ 600-700 / Ton FOB
1 Ton (MOQ)
More
Material : Aluminum
Contact Supplier
Audited Supplier Audited Supplier Since 2019
ZIBO QIMINGXING NEW MATERIAL INCORPORATED CO., LTD.

Manufacturer/Factory

Shandong, China Since 2019
Chat Now Send Inquiry
China Manufacturer High Purity 99.9% Al2O3 Powder Spherical Alumina Powder

China Manufacturer High Purity 99.9% Al2O3 Powder Spherical Alumina Powder

US $ 580-1,800 / Ton FOB
1 Ton (MOQ)
More
Main Products: Aluminium Hydroxide, Frame Retardant Filler, Alumina Powder, Calcined Alumina, Aluminum Oxide, Zeolite, Polyaluminum Cholide, Ferrous Sulfate
Contact Supplier
Audited Supplier Audited Supplier Since 2020
Zibo Aotai New Material Technology Co., Ltd.

Manufacturer/Factory

Shandong, China Since 2020
Chat Now Send Inquiry
High Purity 99.99% Nano Aluminium Oxide Al2O3 Powder Alumina Powder

High Purity 99.99% Nano Aluminium Oxide Al2O3 Powder Alumina Powder

US $ 10-50 / kg FOB
1 kg (MOQ)
More
Form : Powder
Contact Supplier
Audited Supplier Audited Supplier Since 2020
Zibo Aotai New Material Technology Co., Ltd.

Manufacturer/Factory

Shandong, China Since 2020
Chat Now Send Inquiry
High Purity Aluminium Oxide Powder Nano Al2O3 Alumina Powder Price

High Purity Aluminium Oxide Powder Nano Al2O3 Alumina Powder Price

US $ 600-1,250 / Ton FOB
1 Ton (MOQ)
More
Main Products: Kaolin, Bentonite, Perlite, Vermiculite, Talc Powder, Tourmaline Powder, Alumina Powder, Sepiolite
Contact Supplier
Audited Supplier Audited Supplier Since 2018
Hebei Chuangsen Technology Co., Ltd.

Manufacturer/Factory

Hebei, China Since 2018
Chat Now Send Inquiry
High Purity 5n 99.99% Nano Aluminium Oxide Al2O3 Powder Alumina Powder Price

High Purity 5n 99.99% Nano Aluminium Oxide Al2O3 Powder Alumina Powder Price

US $ 10-50 / kg FOB
1 kg (MOQ)
More
Form : Powder
Contact Supplier
Audited Supplier Audited Supplier Since 2020
Zibo Aotai New Material Technology Co., Ltd.

Manufacturer/Factory

Shandong, China Since 2020
Chat Now Send Inquiry
High-Purity Brown Alumina Powder with Comfortable Price

High-Purity Brown Alumina Powder with Comfortable Price

US $ 699-899 / Ton FOB
1 Ton (MOQ)
More
Main Products: Boron Carbide, Brown Fused Alumina, White Corundum, Silicon Dioxide, Silicon Carbide, Whisker Carbon Nanotubes, Boron Nitride, Diamond, Grinding Wheel, CBN
Contact Supplier
Since 2024
IHKA International Cooperation Services (Henan) Ltd.

Manufacturer/Factory

Henan, China Since 2024
Chat Now Send Inquiry
High Purity Alumina Price / White Aluminum Oxide Powder in Polishing and Griding Ceramics

High Purity Alumina Price / White Aluminum Oxide Powder in Polishing and Griding Ceramics

US $ 600-900 / Ton FOB
1 Ton (MOQ)
More
Classification : Alumina
Contact Supplier
Audited Supplier Audited Supplier Since 2010
Lianyungang Zhong Ao Aluminium Co., Ltd.

Manufacturer/Factory,Trading Company

Jiangsu, China Since 2010
Chat Now Send Inquiry
Oxide Abrasive Grains Grinding Powder Grinding Ball Metal Filling Ceramic Fiber
High Purity Nano Aluminium Oxide Al2O3 Powder Alumina Powder Price

High Purity Nano Aluminium Oxide Al2O3 Powder Alumina Powder Price

US $ 2.8-50 / kg FOB
1 kg (MOQ)
More
Main Products: Aluminium Hydroxide, Frame Retardant Filler, Alumina Powder, Calcined Alumina, Aluminum Oxide, Zeolite, Polyaluminum Cholide, Ferrous Sulfate
Contact Supplier
Audited Supplier Audited Supplier Since 2020
Zibo Aotai New Material Technology Co., Ltd.

Manufacturer/Factory

Shandong, China Since 2020
Chat Now Send Inquiry
99.9% High Purity Aluminum Oxide Powder for Ceramic Materials

99.9% High Purity Aluminum Oxide Powder for Ceramic Materials

US $ 1 / kg FOB
1 kg (MOQ)
More
Quality : First Class
Contact Supplier
Audited Supplier Audited Supplier Since 2024
Beijing Entrepreneur Science & Trading Co. Ltd.

Trading Company

Beijing, China Since 2024
Chat Now Send Inquiry
Aluminum Oxide Powder High Purity Industrial Grade

Aluminum Oxide Powder High Purity Industrial Grade

US $ 400-800 / Ton FOB
1 Ton (MOQ)
More
Main Products: Wollastonite, Talc, Calcined Talc, Dolomite, Diopside, Bentonite, Zirconium Replacement Ceramic Brightener, Kaolin, Dead Burned Magnesite, Caustic Calcined Magnesite
Contact Supplier
Audited Supplier Audited Supplier Since 2020
AMANDA INTERNATIONAL PRIVATE LIMITED

Manufacturer/Factory,Trading Company

Liaoning, China Since 2020
Chat Now Send Inquiry
Al2O3 Alumina Oxide Powder/Aluminium Oxide Polishing Powder/High Purity

Al2O3 Alumina Oxide Powder/Aluminium Oxide Polishing Powder/High Purity

US $ 600-1,200 / Ton FOB
5 Tons (MOQ)
More
Grade Standard : Industrial Grade
Contact Supplier
Audited Supplier Audited Supplier Since 2023
Hebei Jietou Chemical Technology Co., Ltd.

Manufacturer/Factory

Hebei, China Since 2023
Chat Now Send Inquiry
High Purity Aluminum Oxide Calcined Alumina Powder

High Purity Aluminum Oxide Calcined Alumina Powder

US $ 500-900 / Ton FOB
1 Ton (MOQ)
More
Main Products: Polyacrylamide, Activated Carbon, Cenosphere, Molecular Sieve, Chemicals
Contact Supplier
Audited Supplier Audited Supplier Since 2019
Ningxia Baiyun Carbon Co., Ltd.

Manufacturer/Factory,Trading Company

Ningxia, China Since 2019
Chat Now Send Inquiry
Alpha and Gamma High Purity High Whiteness Alumina Oxide Powder Al2O3 Powder

Alpha and Gamma High Purity High Whiteness Alumina Oxide Powder Al2O3 Powder

US $ 460-1,500 / Ton FOB
1 Ton (MOQ)
More
Classification : Other Oxides
Contact Supplier
Audited Supplier Audited Supplier Since 2020
Zibo Aotai New Material Technology Co., Ltd.

Manufacturer/Factory

Shandong, China Since 2020
Chat Now Send Inquiry
99.995% 4.5N High Purity Aluminum Oxide Powder for Ceramic Materials

99.995% 4.5N High Purity Aluminum Oxide Powder for Ceramic Materials

US $ 1 / kg FOB
1 kg (MOQ)
More
Main Products: Tannic Acid CAS 1401-55-4, Magnesium Aluminum Silicate Cosmetic Grade, Hydrophilic Fumed Silica&#160, , Silver Coated Copper Powder, PVC Paste Resin, 3-Glycidoxypropyltrimethoxysilane/Kh-560, 3-Methacryloxypropyltrimethoxysilane/Kh-570, Dimethyl Silicone Oil/Polydimethylsiloxane, Citronellol CAS 106-22-9, Watermelon Ketone CAS 28940-11-6
Contact Supplier
Audited Supplier Audited Supplier Since 2024
Beijing Entrepreneur Science & Trading Co. Ltd.

Trading Company

Beijing, China Since 2024
Chat Now Send Inquiry
High Purity 99.6% Calcined Alumina Powder for Stainless Steel Tableware Polishing Material

High Purity 99.6% Calcined Alumina Powder for Stainless Steel Tableware Polishing Material

US $ 460-1,500 / Ton FOB
1 Ton (MOQ)
More
Quality : First Class
Contact Supplier
Audited Supplier Audited Supplier Since 2020
Zibo Aotai New Material Technology Co., Ltd.

Manufacturer/Factory

Shandong, China Since 2020
Chat Now Send Inquiry
Related Videos
  • What is Ceramic Industry White Fused Alumina - High Purity White Fused Alumina Fine Powder
    What is Ceramic Industry White Fused Alumina - High Purity White Fused Alumina Fine Powder
    Negotiable
    5 Tons (MOQ)
    Contact Supplier
  • What is High Purity 99.6% Calcined Alumina Powder for Stainless Steel Tableware Polishing Materials
    What is High Purity 99.6% Calcined Alumina Powder for Stainless Steel Tableware Polishing Materials
    Negotiable
    1 Ton (MOQ)
    Contact Supplier
  • What is 99.5% Min High Purity Calcined Alpha Alumina Oxide Powder for Refractory and Special Ceramic
    What is 99.5% Min High Purity Calcined Alpha Alumina Oxide Powder for Refractory and Special Ceramic
    Negotiable
    1 Ton (MOQ)
    Contact Supplier
  • What is China Factory High Purity 99.6% Calcined Alumina Powder for Stainless Steel Marble Polishing
    What is China Factory High Purity 99.6% Calcined Alumina Powder for Stainless Steel Marble Polishing
    Negotiable
    1 Ton (MOQ)
    Contact Supplier
99.99% High Purity Aluminum Oxide Powder for Advanced Ceramics

99.99% High Purity Aluminum Oxide Powder for Advanced Ceramics

US $ 1 / kg FOB
1 kg (MOQ)
More
Main Products: Tannic Acid CAS 1401-55-4, Magnesium Aluminum Silicate Cosmetic Grade, Hydrophilic Fumed Silica&#160, , Silver Coated Copper Powder, PVC Paste Resin, 3-Glycidoxypropyltrimethoxysilane/Kh-560, 3-Methacryloxypropyltrimethoxysilane/Kh-570, Dimethyl Silicone Oil/Polydimethylsiloxane, Citronellol CAS 106-22-9, Watermelon Ketone CAS 28940-11-6
Contact Supplier
Audited Supplier Audited Supplier Since 2024
Beijing Entrepreneur Science & Trading Co. Ltd.

Trading Company

Beijing, China Since 2024
Chat Now Send Inquiry
High Purity 99.99% Nano Aluminium Oxide Al2O3 Powder Alumina Powder for Crystalline Ceramics Price

High Purity 99.99% Nano Aluminium Oxide Al2O3 Powder Alumina Powder for Crystalline Ceramics Price

US $ 2.8-50 / kg FOB
1 kg (MOQ)
More
Form : Powder
Contact Supplier
Audited Supplier Audited Supplier Since 2020
Zibo Aotai New Material Technology Co., Ltd.

Manufacturer/Factory

Shandong, China Since 2020
Chat Now Send Inquiry
High Purity 99% Alumina Powder for Refractory Materials Plishing Materails

High Purity 99% Alumina Powder for Refractory Materials Plishing Materails

US $ 460-1,500 / Ton FOB
1 Ton (MOQ)
More
Main Products: Aluminium Hydroxide, Frame Retardant Filler, Alumina Powder, Calcined Alumina, Aluminum Oxide, Zeolite, Polyaluminum Cholide, Ferrous Sulfate
Contact Supplier
Audited Supplier Audited Supplier Since 2020
Zibo Aotai New Material Technology Co., Ltd.

Manufacturer/Factory

Shandong, China Since 2020
Chat Now Send Inquiry
Sy Phosphor Grade High Purity Alumina Al2O3α 4n Al2O3 Content 99.99% Alumina Powder

Sy Phosphor Grade High Purity Alumina Al2O3α 4n Al2O3 Content 99.99% Alumina Powder

US $ 1.8-45 / kg FOB
1 kg (MOQ)
More
Kind : Alkaline Oxide
Contact Supplier
Audited Supplier Audited Supplier Since 2023
Zibo Yishengjia Aluminum Co., Ltd.

Manufacturer/Factory,Trading Company

Shandong, China Since 2023
Chat Now Send Inquiry

Not exactly what you want?

Post Sourcing Request

High Purity Calcined Alumina Powder (TCH-33)

High Purity Calcined Alumina Powder (TCH-33)

1 Ton (MOQ)
More
Main Products: Alumina Ceramic, Calcined Alumina, Alumina Ceramic Ball, Alumina Grinding Ball, Alumina Grinding Cylinder, Alumina Ceramic Beads, Ceramic Insulator, Alumina Wear Tile, Alumina Lining Brick, Alumina Ceramic Ring
Contact Supplier
Audited Supplier Audited Supplier Since 2010
Lianyungang Zhong Ao Aluminium Co., Ltd.

Manufacturer/Factory,Trading Company

Jiangsu, China Since 2010
Chat Now Send Inquiry
30-50μ M Alumina 99.9% Alpha Micron Alumina Powder α -Phase High-Purity Semiconductor Material

30-50μ M Alumina 99.9% Alpha Micron Alumina Powder α -Phase High-Purity Semiconductor Material

US $ 40-50 / kg FOB
1 kg (MOQ)
More
Classification : Alumina
Contact Supplier
Audited Supplier Audited Supplier Since 2023
CHANGZHOU KONADA NEW MATERIALS TECHNOLOGY CO.,LTD.

Manufacturer/Factory,Trading Company

Jiangsu, China Since 2023
Chat Now Send Inquiry
High Purity Nano Powder Calcined Alumina Powder Al2O3 Manufacturer CAS 1344-28-1

High Purity Nano Powder Calcined Alumina Powder Al2O3 Manufacturer CAS 1344-28-1

US $ 2.8-50 / kg FOB
1 kg (MOQ)
More
Main Products: Aluminium Hydroxide, Frame Retardant Filler, Alumina Powder, Calcined Alumina, Aluminum Oxide, Zeolite, Polyaluminum Cholide, Ferrous Sulfate
Contact Supplier
Audited Supplier Audited Supplier Since 2020
Zibo Aotai New Material Technology Co., Ltd.

Manufacturer/Factory

Shandong, China Since 2020
Chat Now Send Inquiry
Ceramic Industry White Fused Alumina - High Purity White Fused Alumina Fine Powder

Ceramic Industry White Fused Alumina - High Purity White Fused Alumina Fine Powder

US $ 810-830 / Ton FOB
5 Tons (MOQ)
More
Artificial Abrasive Type : Corundum Abrasives
Contact Supplier
Since 2024
Zhengzhou Huazhijin Abrasive Co., Ltd.

Trading Company

Henan, China Since 2024
Chat Now Send Inquiry
Alumina Powder 99.5% Min High Purity Calcined Powder

Alumina Powder 99.5% Min High Purity Calcined Powder

20 Tons (MOQ)
More
Main Products: Alumina Ceramic, Ceramic Wear Linings, Ceramic Grinding Media, Silicon Carbide Ceramic
Contact Supplier
Audited Supplier Audited Supplier Since 2019
ZIBO QIMINGXING NEW MATERIAL INCORPORATED CO., LTD.

Manufacturer/Factory

Shandong, China Since 2019
Chat Now Send Inquiry
CAS 1344-28-1 China Manufacturer High Purity Al2O3 Powder Spherical Alumina Powder CAS 1344-28-1

CAS 1344-28-1 China Manufacturer High Purity Al2O3 Powder Spherical Alumina Powder CAS 1344-28-1

US $ 580-1,800 / Ton FOB
1 Ton (MOQ)
More
Form : Powder
Contact Supplier
Audited Supplier Audited Supplier Since 2020
Zibo Aotai New Material Technology Co., Ltd.

Manufacturer/Factory

Shandong, China Since 2020
Chat Now Send Inquiry
Polishing Expertise - High Purity Alumina Coarse Powder (CAS No: 1344-28-1)

Polishing Expertise - High Purity Alumina Coarse Powder (CAS No: 1344-28-1)

US $ 420-1,600 / Ton FOB
1 Ton (MOQ)
More
Main Products: Aluminium Hydroxide, Aluminium Oxide, Pseudoboehmite, 4A Zeolite, Aluminium Sulfate, Tabular Corundum, Molecular Sieve
Contact Supplier
Audited Supplier Audited Supplier Since 2023
Zibo Yishengjia Aluminum Co., Ltd.

Manufacturer/Factory,Trading Company

Shandong, China Since 2023
Chat Now Send Inquiry
High Purity Alpha Alumina Powder for Ceramic, Glaze and Refractory

High Purity Alpha Alumina Powder for Ceramic, Glaze and Refractory

US $ 600-690 / Ton FOB
1 Ton (MOQ)
More
Quality : First Class
Contact Supplier
Audited Supplier Audited Supplier Since 2010
Lianyungang Zhong Ao Aluminium Co., Ltd.

Manufacturer/Factory,Trading Company

Jiangsu, China Since 2010
Chat Now Send Inquiry
Al2O3 High Purity Alumina Powder for Refractory CAS No 1344-28-1

Al2O3 High Purity Alumina Powder for Refractory CAS No 1344-28-1

US $ 460-1,500 / Ton FOB
1 Ton (MOQ)
More
Main Products: Aluminium Hydroxide, Frame Retardant Filler, Alumina Powder, Calcined Alumina, Aluminum Oxide, Zeolite, Polyaluminum Cholide, Ferrous Sulfate
Contact Supplier
Audited Supplier Audited Supplier Since 2020
Zibo Aotai New Material Technology Co., Ltd.

Manufacturer/Factory

Shandong, China Since 2020
Chat Now Send Inquiry
Electronic Component Ceramics - High Purity Alumina Coarse Powder (CAS No: 1344-28-1)

Electronic Component Ceramics - High Purity Alumina Coarse Powder (CAS No: 1344-28-1)

US $ 420-1,490 / Ton FOB
1 Ton (MOQ)
More
Classification : Alumina
Contact Supplier
Audited Supplier Audited Supplier Since 2023
Zibo Yishengjia Aluminum Co., Ltd.

Manufacturer/Factory,Trading Company

Shandong, China Since 2023
Chat Now Send Inquiry
99.5% Al2O3 High Purity Refractory Grade Calcined Alumina Powder From Zibo Supplier

99.5% Al2O3 High Purity Refractory Grade Calcined Alumina Powder From Zibo Supplier

US $ 400-550 / Ton FOB
1 Ton (MOQ)
More
Main Products: Concrete Admixture, Aluminum Hydroxide Filler Powder, Flame Retardant, Calcined Alumina Oxide, Polycarboxylate Superplasticizer, Naphthalene Superplasticizer, Sodium Lignosulphonate, Rockwool Rock Wool Board, RO Reverse Osmosis System, Medical Hospital Water Treatment
Contact Supplier
Audited Supplier Audited Supplier Since 2019
Zibo Joyreach New Materials Co., Ltd.

Manufacturer/Factory,Trading Company

Shandong, China Since 2019
Chat Now Send Inquiry
High Purity Factory Price Alpha Alumina Powder Al2O3, Aluminum Oxide, 1344-28-1

High Purity Factory Price Alpha Alumina Powder Al2O3, Aluminum Oxide, 1344-28-1

US $ 10-50 / kg FOB
1 kg (MOQ)
More
Form : Powder
Contact Supplier
Audited Supplier Audited Supplier Since 2020
Zibo Aotai New Material Technology Co., Ltd.

Manufacturer/Factory

Shandong, China Since 2020
Chat Now Send Inquiry
Alumina Oxide Powder Aluminum Oxide Powder Polishing Powder White Powder Micro Powder Brown Corundum Powder
View More

Related Searches

Alumina Powder Silica Powder White Aluminium Oxide Calcined Alumina Alumina Ceramic Powder High Purity Silica High Purity Aluminum Oxide High Purity Aluminium Oxide High-purity Powder Alumina High Temperature Powder Coating

Browse by Categories

Home > Chemicals > Inorganic Chemicals > Oxide
1/532
TOP

Search Filter

Categories

More Less
  • Oxide
  • Abrasive Grains
  • Grinding Powder
  • Grinding Ball
  • Metal Filling
  • Ceramic Fiber
  • Blasting Media
  • Desiccant & Sorbent
  • Building Coating
  • Catalyst & Active Agent

Classification

More Less
  • Alumina
  • Other Oxides
  • Calcium Oxide
  • Titanium Dioxide

Grade Standard

More Less
  • Industrial Grade
  • Food Grade
  • Electron Grade
  • Agriculture Grade

Kind

More Less
  • Alkaline Oxide
  • No Salt Oxide
  • Amphoteric Oxide
  • Acidic Oxide

Quality

More Less
  • First Class
  • Special Class
  • Eligible

Company Type

More Less
  • Manufacturer/Factory
  • Trading Company
  • Group Corporation
  • Other

Company Location

More Less
  • Shandong
  • Henan
  • Jiangsu
  • Hebei
  • Liaoning
  • Jiangxi
  • Guangdong
  • Shanxi
  • Tianjin
  • Ningxia
  • Hunan
  • Shanghai
  • Fujian
  • Beijing
  • Zhejiang
  • Anhui
  • Sichuan
  • Gansu
  • Shaanxi
  • Chongqing
  • Guangxi
  • Inner Mongolia
  • Hubei
  • Hainan
  • Guizhou
Reset Done