ClassID:

85727

C01F11/185 - CPC Classification

Classification description:

Compounds of calcium, strontium, or barium; Carbonates After-treatment, e.g. grinding, purification, conversion of crystal morphology

Recent Application in this class:
#1
20260138880
2026-05-21

Enhancing Carbon Dioxide Storage via Bio-Inspired Mineralization of Vaterite Microspheres Using Ultrasonication and Bio-additives

#2
20260084977
2026-03-26

COMPOSITIONS, METHODS, AND SYSTEMS RELATED TO CALCIUM CARBONATE BLENDS

#3
20260055003
2026-02-26

METHOD FOR SYNTHESIZING A CALCIUM-BASED BIOMINERAL UNDER AMBIENT CONDITIONS

#4
20250340450
2025-11-06

METHODS FOR PROCESSING ALKALINE EARTH METAL CARBONATES, TREATED ALKALINE EARTH METAL CARBONATES, AND RELATED COMPOSITIONS AND PRODUCTS INCLUDING TREATED ALKALINE EARTH METAL CARBONATES

#5
20250135375
2025-05-01

METHODS FOR REACTIVE CRYSTALLISATION

#6
20250066215
2025-02-27

METHOD AND REACTOR FOR PRODUCING PRODUCE CALCIUM CARBONATE

#7
20250051230
2025-02-13

Methods of Producing a Building Material

#8
20250033986
2025-01-30

EXTRUSION-ENCAPSULATED CALCIUM SALTS AS OPACIFYING/WHITENING AGENTS

#9
20240409719
2024-12-12

PRECIPITATED CALCIUM CARBONATE WITH HIGH BIO-BASED CARBON CONTENT FOR POLYMER FORMULATIONS

#10
20240352231
2024-10-24

CALCIUM CARBONATE PARTICLE GROUP, RESIN COMPOSITION, AND METHOD FOR PRODUCING CALCIUM CARBONATE PARTICLE GROUP

#11
20240286917
2024-08-29

Method for producing calcium carbonate solids from alkaline minerals

#12
20240238170
2024-07-18

Oolitic Aragonite Beads and Methods Therefor

#13
20240208834
2024-06-27

APPARATUS AND METHOD FOR PRODUCING PURIFIED CALCIUM CARBONATE

#14
20240156690
2024-05-16

Oolitic Aragonite Beads and Methods Therefor

#15
20240067797
2024-02-29

Methods for Reducing Moisture Content in Alkaline Earth Metal Carbonates

#16
20240010509
2024-01-11

Calcium carbonate with controlled particle morphology, method for producing the same, and crystal growth method

#17
20240002247
2024-01-04

STABILISATION OF CARBONATE CALCIUM NANOPARTICLES

#18
20230365425
2023-11-16

METHODS AND SYSTEMS FOR TREATMENT OF LIMESTONE TO FORM VATERITE

#19
20230357037
2023-11-09

METHOD OF PRODUCING A SOLID METAL CARBONATE HYDRATE

#20
20230181627
2023-06-15

NON-AQUEOUS LIQUID AND SEMI-SOLID FORMULATIONS OF AMORPHOUS CALCIUM CARBONATE

#21
20230166978
2023-06-01

CALCIUM CARBONATE-CONTAINING MATERIAL

#22
20230159346
2023-05-25

FACILE, LOW-ENERGY ROUTES FOR THE PRODUCTION OF HYDRATED CALCIUM AND MAGNESIUM SALTS FROM ALKALINE INDUSTRIAL WASTES

#23
20230118703
2023-04-20

Methods and systems for treatment of lime to form vaterite

#24
20230107410
2023-04-06

Methods and systems for treatment of lime to form vaterite

#25
20230104761
2023-04-06

METHODS AND SYSTEMS FOR TREATMENT OF LIME TO FORM VATERITE

#26
20230049778
2023-02-16

ENCAPSULATED AMORPHOUS CALCIUM CARBONATE COMPOSITIONS

#27
20220396493
2022-12-15

METHOD OF MAKING PURIFIED PRECIPITATED CALCIUM CARBONATE FROM LIME MUD

#28
20220290032
2022-09-15

Oil-based drilling fluid composition, oil-based drilling fluid and preparation method and use thereof

#29
20220202660
2022-06-30

Oolitic Aragonite Beads and Methods Therefor

#30
20220169861
2022-06-02

Process for preparing surface-reacted calcium carbonate

#31
20220153605
2022-05-19

Mesomorphic Ceramics Films via Blade Coating of Nanorod Suspensions for High-Power Laser Applications

#32
20220153604
2022-05-19

CALCIUM CARBONATE SINTERED BODY AND METHOD FOR PRODUCING SAME, AND BONE GRAFTING MATERIAL

#33
20220144659
2022-05-12

Calcium carbonate with controlled particle morphology, method for producing the same, and crystal growth method

#34
20210403336
2021-12-30

Carbonate Aggregate Compositions and Methods of Making and Using the Same

#35
20210380431
2021-12-09

Systems of producing calcium and magnesium carbonate from the Ca/Mg containing solution leached by a CO-based hydrometallurgical process

#36
20210340019
2021-11-04

Artificial nacre material with layered structure and preparation method thereof

#37
20210339212
2021-11-04

A METHOD OF DISPERSING FINE PARTICLES IN AN AQUEOUS OR POLAR SOLVENT

#38
20210261429
2021-08-26

Methods and systems for treatment of limestone to form vaterite

#39
20210261428
2021-08-26

Methods and systems for treatment of lime to form vaterite

#40
20210221974
2021-07-22

Methods for reducing moisture content in alkaline earth metal carbonates

#41
20210214522
2021-07-15

Methods for preparing and compositions including untreated and surface-treated alkaline earth metal carbonates

#42
20210101802
2021-04-08

Inorganic material composition and utilities thereof

#43
20210094840
2021-04-01

Bimodal precipitated calcium carbonate slurries suitable for paper and board applications, methods for making the same and their uses

#44
20210024364
2021-01-28

Facile, low-energy routes for the production of hydrated calcium and magnesium salts from alkaline industrial wastes

#45
20200346224
2020-11-05

MINERAL BENEFICIATION METHOD USING BIOREAGENT EXTRACTED FROM GRAM POSITIVE BACTERIA

#46
20200331770
2020-10-22

METHOD FOR PRODUCING CALCIUM CARBONATE SINTERED COMPACT

#47
20200308015
2020-10-01

Oolitic aragonite beads and methods therefor

#48
20200291235
2020-09-17

POST TREATMENT OF SURFACE-REACTED CALCIUM CARBONATE WITH DIFFERENT FUNCTIONAL CATIONS

#49
20200255675
2020-08-13

Use of surface-reacted calcium carbonate as anti-blocking agent

#50
20200206716
2020-07-02

Method for producing functionally improved carbolime

#51
20200147260
2020-05-14

Method of producing product inorganic compound and product inorganic compound

#52
20200093955
2020-03-26

Method for producing calcium carbonate block

#53
20200071179
2020-03-05

Releasing impurities from a calcium-based mineral

#54
20200062608
2020-02-27

Calcium carbonate and production method therefor

#55
20200046869
2020-02-13

USE OF ZINC TREATED PRECIPITATED CALCIUM CARBONATE IN HYGIENIC PRODUCTS

#56
20200039834
2020-02-06

Drying process

#57
20190389736
2019-12-26

PROCESS FOR THE PREPARATION OF FRAGMENTED NATURAL CALCIUM CARBONATE WITH A REDUCED CONTENT OF IMPURITIES AND PRODUCTS OBTAINED THEREOF

#58
20190359495
2019-11-28

CARBONATE COMPOSITIONS AND METHODS OF USE THEREOF

#59
20190352485
2019-11-21

Calcium carbonate filler for resins, and resin composition containing same

#60
20190320691
2019-10-24

Surface-reacted calcium carbonate as extrusion aid

#61
20190256714
2019-08-22

Process for manufacturing white pigment containing products

#62
20190195678
2019-06-27

Manufacture of a Material on the Basis of Calcium-and/or Magnesium-Carbonate Having a Reduced Decrepitation Tendency

#63
20190135650
2019-05-09

Inorganic material composition and utilities thereof

#64
20190127233
2019-05-02

METHOD FOR THE MANUFACTURING OF A SUSPENSION COMPRISING A CALCIUM CARBONATE-COMPRISING MATERIAL

#65
20190039911
2019-02-07

Production of rounded salt particles

#66
20190031523
2019-01-31

Method for preparing organic environment friendly snow-melting agent by using salt mud from two-alkali method

#67
20180355183
2018-12-13

Treatment of surface-reacted calcium carbonate

#68
20180327604
2018-11-15

Method for the production of granules comprising surface-reacted calcium carbonate

#69
20180257058
2018-09-13

Oxygen selective adsorbent for easy desorption and preparation method thereof

#70
20180244533
2018-08-30

PRECIPITATED CALCIUM CARBONATE, A METHOD FOR ITS MANUFACTURE AND USES THEREOF

#71
20180237300
2018-08-23

METHOD FOR MANUFACTURING POROUS MATERIAL INCLUDING CALCIUM CARBONATE, AND METHOD FOR MANUFACTURING POROUS MATERIAL INCLUDING CARBONATE APATITE

#72
20180201790
2018-07-19

Reduced moisture pickup in polyol-containing mineral filler products

#73
20180200731
2018-07-19

Foam Prevention In The Reverse Flotation Process For Purifying Calcium Carbonate

#74
20180155555
2018-06-07

Use of surface-reacted calcium carbonate as anti-blocking agent

#75
20180148343
2018-05-31

METHOD FOR PRODUCING MICROPLATES FROM SHELLS, AND MATERIAL PRODUCED BY USING THE MICROPLATES

#76
20180127284
2018-05-10

Process for increasing opacity of precipitated calcium carbonate

#77
20180093899
2018-04-05

Surface-coated calcium carbonate-containing material and process for the purification of water

#78
20180078506
2018-03-22

Dispersible dosage form

#79
20180066139
2018-03-08

COARSE PIGMENT ADDITION AND HIGH SOLIDS SLURRIES FOR HIGHER COATING COLOUR CONCENTRATIONS

#80
20180056344
2018-03-01

Method of utilizing construction and demolition waste

#81
20180016421
2018-01-18

Surface-treated calcium carbonate filler for curable resin composition, and curable resin composition containing filler

#82
20180009991
2018-01-11

Process to obtain an ultrafine GCC with high light scattering properties and high solid content

#83
20180002187
2018-01-04

Process for treating a sulfurous fluid to form gypsum and magnesium carbonate

#84
20170369329
2017-12-28

A PROCESS FOR CONVERTING NATURAL CALCIUM CARBONATE INTO PRECIPITATED CALCIUM CARBONATE

#85
20170335517
2017-11-23

Process for the preparation of flocculated filler particles

#86
20170283619
2017-10-05

Process for improving particle size distribution of calcium carbonate-comprising material

#87
20170275825
2017-09-28

Process for the preparation of flocculated filler particles

#88
20170275175
2017-09-28

Dry process for preparing a surface-modified alkaline earth metal carbonate-containing material

#89
20170252480
2017-09-07

METHOD OF PRODUCING PRODUCT INORGANIC COMPOUND AND PRODUCT INORGANIC COMPOUND

#90
20170240746
2017-08-24

Reduced moisture pickup in polyol-containing mineral filler products

#91
20170240433
2017-08-24

Method for the manufacturing of a suspension comprising a calcium carbonate-comprising material

#92
20170217782
2017-08-03

Process for manufacture of purified alkaline earth metal carbonate

#93
20170216349
2017-08-03

Non-aqueous liquid and semi-solid formulations of amorphous calcium carbonate

#94
20170208827
2017-07-27

Encapsulated amorphous calcium carbonate compositions

#95
20170174895
2017-06-22

Process for the preparation of crumbles comprising calcium carbonate

#96
20170131133
2017-05-11

MANUFACTURE OF A MATERIAL ON THE BASIS OF CALCIUM- AND/OR MAGNESIUM-CARBONATE HAVING A REDUCED DECREPITATION TENDENCY

#97
20170129782
2017-05-11

Drying process

#98
20170114223
2017-04-27

Coarse pigment addition and high solids slurries for higher coating colour concentrations

#99
20170081520
2017-03-23

Method for producing stabilized amorphous calcium carbonate

#100
20170081208
2017-03-23

Process for the preparation of an aqueous solution comprising at least one earth alkali hydrogen carbonate and its use

#101
20170036930
2017-02-09

Process for the preparation of an aqueous solution comprising at least one earth alkali hydrogen carbonate and its use

#102
20170015859
2017-01-19

Process of manufacture of particles with a natural calcium carbonate and ethylene acrylic acid salts base, suspensions and dry pigments obtained, their uses

#103
20170009077
2017-01-12

Surface modified calcium carbonate containing minerals and its use

#104
20170002204
2017-01-05

PROCESS TO PREPARE SURFACE-MODIFIED MINERAL MATERIAL, RESULTING PRODUCTS AND USES THEREOF

#105
20160279568
2016-09-29

Flue gas treatment using kraft mill waste products

#106
20160264785
2016-09-15

Process for improving the particle size distribution of a calcium carbonate-containing material

#107
20160244621
2016-08-25

Coating composition comprising submicron calcium carbonate-comprising particles, process to prepare same and use of submicron calcium carbonate-comprising particles in coating compositions

#108
20160229702
2016-08-11

Precipitated calcium carbonate from pulp mill waste having an improved brightness, method for the production and use thereof

#109
20160108246
2016-04-21

Reuse of paint-saturated alkaline earth metal carbonates

#110
20160060132
2016-03-03

Method and apparatus for the enhanced separation of calcium eggshell from organic membrane

#111
20150376022
2015-12-31

Mineral composition, especially for use in paper fillers and paper or plastic coatings

#112
20150366903
2015-12-24

ORALLY-ADMINISTRABLE COMPOSITIONS COMPRISING STABLE AMORPHOUS CALCIUM CARBONATE

#113
20150284530
2015-10-08

Process of manufacture of particles with a natural calcium carbonate and ethylene acrylic acid salts base, suspensions and dry pigments obtained, their uses

#114
20150273481
2015-10-01

Foam Prevention In The Reverse Flotation Process For Purifying Calcium Carbonate

#115
20150240040
2015-08-27

Calcium carbonate filler for resin, and resin composition containing said filler

#116
20150183963
2015-07-02

Heavy calcium carbonate, production method therefor, and resin composition containing said calcium carbonate

#117
20150183654
2015-07-02

Production of high purity precipitated calcium carbonate

#118
20150175806
2015-06-25

Surface modified calcium carbonate containing minerals and its use

#119
20150166762
2015-06-18

Method for producing stabilized amorphous calcium carbonate

#120
20150141551
2015-05-21

High solids and low viscous aqueous slurries of calcium carbonate-comprising materials with improved rheological stability under increased temperature

#121
20150135953
2015-05-21

Particulate matter and methods of obtaining same from a kraft waste reclamation

#122
20150102141
2015-04-16

METHOD FOR REDUCING THE LOSSES OF VALUABLE SUBSTANCES IN MINERAL PROCESSING

#123
20150083831
2015-03-26

Narrow particle size distribution calcium carbonate and methods of making same

#124
20150050206
2015-02-19

Method of preparing calcium carbonate using direct carbonation reaction

#125
20150040800
2015-02-12

Dispersed calcium carbonate containing material for an improved stability under alkaline conditions

#126
20150010458
2015-01-08

Process for the preparation of an aqueous solution comprising at least one earth alkali hydrogen carbonate and its use

#127
20150008369
2015-01-08

Non-caking rock dust for use in underground coal mines

#128
20140377559
2014-12-25

Reuse of paint-saturated alkaline earth metal carbonates

#129
20140360940
2014-12-11

Process for the preparation of an aqueous solution comprising at least one earth alkali hydrogen carbonate and its use

#130
20140319412
2014-10-30

Process for preparing surface-reacted calcium carbonate and its use

#131
20140310979
2014-10-23

Method for drying wet particulate matter, wherein the dried particulate matter is a white mineral having a brightness Ry of at least 65% that forms particulate matter through drying in direct superheated steam dryer

#132
20140205530
2014-07-24

Use of formulations containing glycerol as a dry grinding aid agent of mineral matter

#133
20140186241
2014-07-03

Precipitated calcium carbonate from pulp mill waste having an improved brightness, method for the production and use thereof

#134
20140141246
2014-05-22

SYSTEM FOR PRODUCING PRECIPITATED CALCIUM CARBONATE FROM CALCIUM CARBONATE SLURRY WASTE; METHOD FOR CALCIUM CARBONATE SLURRY WASTE RECOVERY, PROCESSING AND PURIFICATION AND THE CALCIUM CARBONATE PRODUCT THEREOF

#135
20140044620
2014-02-13

Method for producing precipitated calcium carbonate using fowl egg shells

#136
20130336859
2013-12-19

Production of high purity precipitated calcium carbonate

#137
20130324762
2013-12-05

Process for preparing surface-reacted calcium carbonate and its use

#138
20130323489
2013-12-05

Process for preparing surface-reacted calcium carbonate and its use

#139
20130042791
2013-02-21

Coarse pigment addition and high solids slurries for higher coating colour concentrations

#140
20130009093
2013-01-10

Particulate matter and methods of obtaining same from a Kraft waste reclamation

#141
20120318895
2012-12-20

Process for dry grinding of one or more mineral materials including at least one calcium carbonate

#142
20120309877
2012-12-06

Surface-treated calcium carbonate and paste-like resin composition containing same

#143
20120302689
2012-11-29

Use of co-grinding agents in a process to manufacture co-ground natural and precipitated calcium carbonates, suspensions and dry pigments obtained and their uses

#144
20120264867
2012-10-18

Procedure for manufacture of aqueous suspensions of calcium carbonate and suspensions obtained, and their uses

#145
20120264865
2012-10-18

Narrow particle size distribution calcium carbonate and methods of making same

#146
20120217327
2012-08-30

Process for dry grinding of one or more mineral materials including at least one calcium carbonate

#147
20120142965
2012-06-07

For preparing surface-reacted calcium carbonate and its use

#148
20120142842
2012-06-07

USE OF ALKALINE CARBONATE SALTS TO REDUCE THE DOSE OF ACRYLIC POLYMER IN A METHOD OF GRINDING CALCIUM CARBONATE IN WATER

#149
20120077917
2012-03-29

Method for dry grinding a material containing a carbonate ore

#150
20120076713
2012-03-29

Manufacture of a Material on the Basis of Calcium- and/or Magnesium-Carbonate Having a Reduced Decrepitation Tendency

#151
20120040111
2012-02-16

Precipitated calcium carbonate pigment, especially for use in inkjet printing paper coatings

#152
20120035312
2012-02-09

Surface-treated calcium carbonate and paste resin composition containing same

#153
20120022199
2012-01-26

ANTI-AGING CHEMICALS FOR HIGH SOLIDS LOADING SLURRIES

#154
20110300052
2011-12-08

PARTICULATE MATTER AND METHODS OF OBTAINING SAME FROM A KRAFT WASTE RECLAMATION

#155
20110269627
2011-11-03

Formulation based on micronized natural calcite mineral as a plant booster and mineral fertilizer

#156
20110196083
2011-08-11

Process of manufacturing a co-ground calcium carbonate material of the GCC and PCC type with a specific steepness factor, obtained products and their uses

#157
20110133006
2011-06-09

USE OF FORMULATIONS CONTAINING GLYCEROL AS A DRY GRINDING AID AGENT OF MINERAL MATTER

#158
20110105670
2011-05-05

Procedure for manufacture of aqueous suspensions of calcium carbonate and suspensions obtained, and their uses

#159
20110092629
2011-04-21

Use of (meth)acrylic polymers in a method for manufacture of an aqueous suspension of calcium carbonate

#160
20100263576
2010-10-21

AGGREGATED PARTICULATE MINERALS, COMPOSITIONS COMPRISING AGGREGATED CALCIUM CARBONATE, METHODS OF MAKING AND USES THEREOF

#161
20100222484
2010-09-02

Process of manufacture of particles with a natural calcium carbonate and ethylene acrylic acid salts base, suspensions and dry pigments obtained, their uses

#162
20100219269
2010-09-02

Grinding method for inorganic particulate material

#163
20100189614
2010-07-29

Method for kraft waste reclamation

#164
20100075148
2010-03-25

Process of manufacturing a co-ground calcium carbonate mineral of the GCC and PCC type with a specific steepness factor, obtained products and their uses

#165
20100074827
2010-03-25

Process of preparing mineral material with particular ceria-containing zirconium oxide grinding beads, obtained products and their uses

#166
20100069319
2010-03-18

Mercaptopurine derivatives and uses thereof

#167
20100048741
2010-02-25

Fabrication method of CaCO3 nanoparticles using beads milling

#168
20100040528
2010-02-18

Process of purification of minerals based on calcium carbonate by flotation in the presence of quaternary imidazolium methosulfate

#169
20100035076
2010-02-11

Method for Producing Particulate Inorganic Material

#170
20100025507
2010-02-04

Method for dry grinding of one or more mineral materials consisting of at least one calcium carbonate

#171
20090312459
2009-12-17

Method for dry grinding a material containing a carbonate ore

#172
20090304921
2009-12-10

Particulate matter and methods of obtaining same from a Kraft waste reclamation

#173
20090298988
2009-12-03

Use of co-grinding agents in a process to manufacture co-ground natural and precipitated calcium carbonates, suspensions and dry pigments obtained and their uses

#174
20090232723
2009-09-17

PARTICULATE MATTER AND METHODS OF OBTAINING SAME FROM A KRAFT WASTE RECLAMATION

#175
20090170994
2009-07-02

Compositions Comprising High Surface Area Ground Calcium Carbonate

#176
20090124745
2009-05-14

Particles of Precipitated Calcium Carbonate, Process For Making The Particles And Use Of The Particles As Filler

#177
20090111906
2009-04-30

Use of Dispersants to Concentrate Mineral Matter in Water, Dispersions Obtained and Their Uses

#178
20090044725
2009-02-19

Economical process of manufacturing very fine co-ground calcium carbonate material of the GCC and PCC type, obtained products and their uses

#179
20090022912
2009-01-22

Precipitated calcium carbonate pigment, especially for use in inkjet printing paper coatings

#180
20090017233
2009-01-15

Precipitated calcium carbonate pigment, especially for use in inkjet printing paper coatings

#181
20080308010
2008-12-18

Economical Process of Manufacturing Very Fine Co-Ground Calcium Carbonate Material of the Gcc and Pcc Type, Obtained Products and Their Uses

#182
20080220255
2008-09-11

CaCO3/SiO2 nH2O NANOCOMPOSITE PARTICLES AND SiO2 nH2O HOLLOW-STRUCTURES NANOMATERIALS AND SYNTHESIZING METHOD

#183
20080219912
2008-09-11

Particulate matter and methods of obtaining same from a kraft waste reclamation

#184
20080210134
2008-09-04

Precipitated Calcium Carbonate (PCC) from Sugar Processing Byproducts for use in Cementitious Applications and Methods Thereof

#185
20080203008
2008-08-28

Process for preparation of aqueous suspensions of mineral loads, aqueous suspensions of mineral loads obtained and their uses

#186
20080199540
2008-08-21

Orally-administrable compositions comprising stable amorphous calcium carbonate

#187
20080168925
2008-07-17

Aggregated Particulate Minerals, Compositions Comprising Aggregated Calcium Carbonate, Methods of Making and Uses Thereof

#188
20080145308
2008-06-19

Method for producing alkaline earth metal oxides

#189
20080041275
2008-02-21

UV varnish gloss performance using novel pigment and process for making same

#190
20070281033
2007-12-06

Skin exfoliation

#191
20070167531
2007-07-19

Natural particulate carbonate

#192
20070166393
2007-07-19

Pure pearl powder preparation method

#193
20070107637
2007-05-17

Powdery composition based on a calco-magnesian compound

#194
20070051482
2007-03-08

Method for kraft waste reclamation

#195
20060287423
2006-12-21

Use of polyacrylic acids as grinding aids for calcium carbonate

#196
20060188452
2006-08-24

Treatment composition

#197
20060106118
2006-05-18

Grinding method

#198
20060003117
2006-01-05

Ink jet recording paper

#199
20050276897
2005-12-15

Ultra-dry calcium carbonate

#200
20050249759
2005-11-10

Method for producing aqueous suspensions of mineral fillers, the thus obtained aqueous suspensions of mineral fillers and the use thereof

#201
20050170178
2005-08-04

CaCO/SiO.nHO nanocomposite particles and SiO.nHO hollow-structures nanomaterials and synthesizing method

#202
20050158226
2005-07-21

Method for the production of precipitated calcium carbonate with a high degree of brightness

#203
20050127214
2005-06-16

Method for reducing the size of metallic compound particles

#204
20050106110
2005-05-19

Stabilized vaterite

#205
16111926
2020-03-17

Method of brightening ground calcium carbonate

#206
15498403
2018-02-27

Reclaiming useful products from exhaust gas clean-up system

#207
15357190
2020-05-05

Nano-calcium carbonate