Embrace nature and science
for an aﬄuent future.

MARUO
CALCIUM
Maruo Calcium Co.,Ltd.
Corporate Profile

PRODUCTS

Product guide
Calcium carbonate is a magical material
with numerous advantages and diverse possibilities.
Its use will surely expand into a broad range of applications.
Maruo is working on the development of superb products desiredby customers in various ﬁelds.

https://www.maruo-cal.co.jp/en/html/product.html

Paints/Inks
Calcium carbonate is used in paints to prevent
sagging on walls, to adjust the gloss and shine ofpaint surfaces, and to enhance paint ﬁlm
strength, as well as in inks to prevent blotting
and blurring in print and to adjust inkʼs drying
time.

Synthetic resins■ Sealants/Adhesives/Plastisols
While sealants, adhesives and plastisols are
generally designed to be pasty, they need to meet
diverse viscosity design requirements ranging
from putty to liquid, according to their use.
Colloidal or light calcium carbonate products are
typically made into a putty or paste. In contrast,
ground calcium carbonate products are designed
to be liquid or used to adjust the viscosity ofpaste products. Their use has been growing year
by year as a material that improves functional
aspects such as strength and elongation ratio, as
well as adhesive properties and storage stability.

Keyproducts

Building paint ingredients
Powder coating ingredients
Road paint ingredients
Marine paint ingredients
Flame-resistant covering ingredients
Ingredient for newspaper, gravure and oﬀset inks

Example applications
To improve the ease of operation and storage stability ofbuilding sealants and adhesives;
reinforcement performance andelasticity; and adhesive andanti-slipping properties ofautomotive plastisols, such as
undercoats, chipping-resistantcoatings and body sealer.

■Colloidal/

MSK-PO, Kalfain 200, Kalfain 200M, Kalfain 200S, Kalfain 500, Kalfain 20S, Kalfain N-2, Kalfain N-350,Kalfain N-40 and Carlex 35,among other.

■Ground calcium carbonates:

R ground calcium carbonate, ground calcium carbonate N-35, Super S, Special Rice S, Super SS, Super
SSS, Super 4S, Super #1500, Super #1700, Super #2000, Super #2300, Nanox #25 and Nanox #30,amongother.

light calcium carbonates:

Example applications

Keyproducts■Colloidal/

Kalfain 200, Kalfain 200M, Kalfain 500, Kalfain N-40, MS-2000, N-2, MC-K, MC-S II, Luminus, Whiscal andlight calcium carbonate■Ground calcium carbonates:

R ground calcium carbonate, ground calcium carbonate N-35, ground calcium carbonate, Super S, Special
Rice S, Super SS, Super SSS, Super 4S, Super #1500, Super #1700, Super #2000 and Super #2300,among
other.

light calcium carbonates:

RubberCalcium carbonate disperses within rubber andbonds tightly with rubber molecules to provide
increased thermal stability, wear resistance,tensile strength and tear strength, thuspermitting its widespread use in rubber products.

Example applications
Reinforcing agent to rubber
pro ducts such as hoses andbelts■ Film applications
We oﬀer additive products for various types ofﬁlm. Being excellent in particle uniformity anddispersibility, these products are suitable foranti-blocking and optical applications.
Products on the Positive List issued by theJapan Hygienic Oleﬁn and Styrene Plastics
Association are also available to meet customer
needs.

Keyproducts

Example applications
I n d u s t r i a l p l a s t i c ﬁ l m a d d it ives (ant i-blo cking/opt icalapplications) and permeableﬁlm additives (for diapersand sanitary goods)■Colloidal/N-2, Kalfain N-40, Cube-18BHS, Cube-50KAS,Cube-80KAS and Kalfain YM23

■Ground calcium carbonates:

Snow Lite S to #1500, MC Coat S-1, MC Coat S-20, Super #2000, Nano Coat S-25 to 30, Caltex S-7A, R-30,R-50A and R-70H

light calcium carbonates:

Keyproducts■Colloidal/

MSK-C, Kalfain 200, Kalfain 200M, Kalfain 500, Kalfain N-40 and light calcium carbonate■Ground calcium carbonates:

R ground calcium carbonate, ground calcium carbonate N-35, ground calcium carbonate, Super S, Special
Rice S, Super SS, Super SSS, Super 4S, Super #1500, Super #1700, Super #2000 and Super #2300,among
other.

light calcium carbonates:

Food additives/
Pharmaceutical products
Calcium is an the essential minerals, along withiron, in the group of inorganic substances vitalfor the human body. Maruo oﬀers products
compliant with the requirements set forth in theJapanese Standards for Food Additives and thePharmacopeia of Japan. There are several kindsof calcium that have been used as food fortifying
agents, among which calcium carbonate, with its
relatively high calcium content, is eﬀective at a
low additive level. Since it is tasteless andodorless, it aﬀects food ﬂavor less than othercalcium agents. Moreover, made from a highly
pure material, calcium carbonate, which iscompliant with the Pharmacopeia of Japan, if canbe used for pharmaceutical applications.

■ Plastics applications
Calcium carbonate works to adjust the hardnessof plastics and to improve strength for higher
impact resistance, ﬂexibility and dimensional
stability.
Products on the Positive List issued by theJapan Hygienic Oleﬁn and Styrene Plastics
Association are also available to meet customer
needs.

Keyproducts

04

Example applications
Fillers for synthetic resin products,
such as wire coverings and wallpaper
Indirect materials that impartdimensional stability and aesthetic
qualities to Plastic products used inbathtubs, wash stands and sash
windows■Colloidal/MSK-P, MSK-PO, Kalfain 200, Kalfain 200M, Kalfain 500, Kalfain 20S, Kalfain N-350, Kalfain N-40, Carlex
100, Carlex 300, N-2 and MC-K,among other.

■Ground calcium carbonates:

ground calcium carbonate N-35, ground calcium carbonate, Super S, Special Rice S, Super SS, Super SSS,Super 4S, Super #1500, Super #1700, Super #2000, Super #2300 and Nanox #25,among other.

light calcium carbonates:

Keyproducts■Colloidal/ground/

Example applications
Ph-adjustting additives insweets, beverages and instantnoodles in fortify calcium andpH control

Calfood (food additive) and precipitated calcium carbonate (pharmaceutical use)light calcium carbonates:05

R&D / PRODUCTION / SALES

BUSINESS LOCATION

Oﬃces and plants
Essential Part of Maruo

https://www.maruo-cal.co.jp/en/html/company̲list.html
Maruoʼs network of oﬃces and plants responds
to customer needs with reliable quality.
We strive to produce valuable products by integrating all processes
from development to manufacturing and to sale,fully drawing on the respective strength of each oﬃce and production site.

R&D
Along with the expanding use ofcalcium carbonate, demand for
Maruoʼs products is becoming
increasingly sophisticated and diverse.
To carefully respond to individual
requests from our customers, Maruo
explores new technologies from along-term perspective, as well as
fo cusing on basic research, anddevelops them into applied researchand development, drawing on our richcreativity. We will make unceasing
eﬀorts to develop products with aunique eye for unknown potential andnew values of calcium carbonate.

Main Oﬃce/
Central Research InstituteTo oﬀer a wide variety ofsuperb materials

Sales System

For high quality andstable supply

Production SystemMaruoʼs mass-production systemcomprises three plants, located in
the Akashi main oﬃce, Tsuchiyama
a n d Ts u c h i u r a , a s w e l l a s o t h e r
Maruo Group companies. Maruo hasconstructed one of the worldʼs top
production systems in terms ofnanoscale calcium carbonate products. We also actively promote
production system innovations
with future needs in mind, including cost reductions and ﬂexible
manufacturing. To respond todiverse customer needs, Maruo
has constructed a ﬂexible support
system and a fast logistics system,
establishing distribution centers inTokyo and Osaka.

06

Maruoʼs distribution centers in Tokyo,
Nagoya and Osaka, in cooperation
with the research and development
division, accurately identifyever-diversifying customer needs andrespond to their requests. As a generalmanufacturer of calcium carbonate
products with a discerning eye forexcellent materials, Maruo undertakes
the import and distribution of various
products, including wet silica. We arealso directing our eﬀorts toward
overseas operations, establishing The
Maruo (Shanghai) Trading Co., Ltd. in
Shanghai, China in 2003. Presently,
we export our products to 20 countries.

● Main Oﬃce/Akashi Plant

1455 Nishioka, Uozumi-cho, Akashi City,
Hyogo Pref. 674-0084(Main Oﬃce) Tel: +81-78-942-2112 Fax: +81-78-942-8863(Plant) Tel: +81-78-942-2112 Fax: +81-78-942-0101● Central Research Institute1455 Nishioka, Uozumi-cho, Akashi City,
Hyogo Pref. 674-0084
Tel: +81-78-942-2112 Fax: +81-78-941-3529● Tokyo Sales Oﬃce

Shimojin Bldg,4-18-7 Taito, Taito-ku,
Tokyo 110-0016
Tel: +81-3-5846-7771 Fax: +81-3-5846-7771● Nagoya Sales Oﬃce

2-8-6 Sawagami, Atsuta-ku, Nagoya,
Aichi Pref. 456-0012
Tel: +81-052-681-6301 Fax: +81-052-671-7712● Osaka Sales Oﬃce

Maruo Osaka Bldg, 5-6-29 Fukushima, Fukushima-Ku,Osaka, Osaka Pref. 553-0003
Tel: +81-6-6458-9861 Fax: +81-6-6458-9869● Tsuchiyama Plant

2086 Nishifutami, Futami-cho, Akashi City,
Hyogo Pref. 674-0094
Tel: +81-78-942-1881 Fax: +81-78-944-1145● Tsuchiura Plant

5388 Amihara, Ami-machi, Inashiki-gun,Ibaraki Pref. 300-0331
Tel: +81-29-887-0666 Fax: +81-29-887-7705

Group Companies■ Kyushu Calcium Co., Ltd.

152-1 Katsuyamamida, Miyako-machi, Miyako-gun,Fukuoka Pref. 824-0811
Tel: +81-930-32-4446 Fax: +81-930-32-3119■ Maruo (Shanghai) Trading Co., Ltd.

Room D310, D, Orient International Plaza,No. 85 Loushanguan Road, Shanghai, China 200336
Tel: +86-21-6278-9872
Fax: +86-21-6278-9857● Order Receipt Center

Maruo Osaka Bldg, 5-6-29 Fukushima, Fukushima-Ku,Osaka, Osaka Pref. 553-0003
Tel: +81-6-4798-7163 Fax: +81-120-555-327

07

Maruo Calcium Co.,Ltd.
1455 Nishioka, Uozumi-cho, Akashi City, Hyogo Pref.
TEL. 078-942-2112
https://www.maruo-cal.co.jp/en/

MARUO CALCIUM Corporate ProfileOverview
Corporate Name:

Maruo Calcium Co., Ltd.

Main Oﬃce:1455 Nishioka, Uozumi-cho, Akashi City, Hyogo Pref. 674-0084

Founded:

October 1, 1926

Incorporated:

November 18, 1948

Paid-up Capital:¥876,552,069

Representative:

Haruo Maruo, President

Employees:

272 (consolidated accounts in March 2024)

Sales:¥12,889 Million (consolidated accounts in March 2024)

Business:

Manufacture and sale of calcium carbonates and other industrial materials

Products:

Various types of colloidal calcium carbonates
Light calcium carbonates
Various types of ground calcium carbonates
Food additive calcium carbonates
Animal pharmaceutical calcium carbonates
Hydrated lime, Quicklime
Wet silica
Various types of minerals including talc, clay, and silica powderGroup Companies Overview■ Kyushu Calcium Co., Ltd.
Paid-up Capital:¥20,000,000

Oﬃce:

152-1 Katsuyamamida, Miyako-machi, Miyako-gun, Fukuoka Pref.

Business:

Manufacture of various types of ground calcium carbonates,
including those for surface treatment■ Maruo (Shanghai) Trading Co., Ltd.
Paid-up Capital:$700,000 (US$)

Oﬃce:

Room D310, D, Orient International Plaza, No. 85 Loushanguan Road, Shanghai, China

Business:

Sale of various types of minerals including calcium carbonates,talc and clay and various other industrial materials

MARUO CALCIUM Corporate Outline

HistoryOct. 1926:

Maruo Seifun Goshi Company founded in Nishioka, Uozumi-mura, Akashi-gun,Hyogo Prefecture; commences production and sales of pigments for paints.

Jan. 1928:

Merges with Harima Seifun Goshi Company and acquires Akashi Seifun Co., Ltd.

Mar. 1931:

Commences production of light calcium carbonates.
Kobe Oﬃce opened.

Sep. 1932:

Tokyo Oﬃce opened.

Jun. 1934:

Osaka Oﬃce opened.
Commences production of ground calcium carbonates.

Dec. 1939:

Maruo Trading Co., Ltd. established in Kobayashi-cho, Taisho-ku,
Osaka to place the sales division into another organization.

Aug. 1944:

Tokyo Oﬃce of Maruo Trading Co., Ltd. split oﬀ to establish Nitto Hakua Co., Ltd.

Nov. 1948:

Maruo Seifun Co., Ltd. established,with the main oﬃce located in Awaji-cho, Higashi-ku, Osaka.

Feb. 1949:

Commences production of colloidal calcium carbonates.

Aug. 1949:

Maruo Seifun Co., Ltd. merges with Maruo Seifun Goshi Company andtransfers its main oﬃce to Nishioka, Uozumi-cho, Akashi City.

Jul. 1950:

Merges with Akashi Seifun Co., Ltd.

Apr. 1953:

Merges with Maruo Shoji Co., Ltd. and reorganized as Osaka Sales Oﬃce.

Mar. 1957:

Tsuchiyama Factory completed; commences production of colloidal andlight calcium carbonates.

Dec. 1959:

Toyo Hakudo Co., Ltd. established.

Mar. 1961:

Nagoya Oﬃce opened.

Aug. 1963:

Company name changed to Maruo Calcium Co., Ltd.
Group company name changed from Nitto Hakua Co., Ltd. to Nitto Calcium Co., Ltd.

Jan. 1964:

Tsuchiura Factory completed; commences production of colloidal andlight calcium carbonates.
Listed on the second section of the Osaka Stock Exchange.

May 1965:

Merges with Nitto Calcium Co., Ltd. and reorganized as Tokyo Sales Oﬃce.

Apr. 1979:

Kyushu Calcium Co., Ltd. established.

Oct. 1983:

Central Research Institute established.

Jun. 1989:

Osaka Sales Oﬃce relocated to newly completed
Maruo Osaka Building in Fukushima-ku, Osaka.

Mar. 2001:

Ordering Center opened.

Sep. 2003:

Maruo (Shanghai) Trading Co., Ltd. established.

Sep. 2007:

Dongguan Liwan Nanotech Co., Ltd. established.

Jul. 2013:

Listed on the second section of the Tokyo Stock Exchange.

Mar. 2017:

Main oﬃce building completed.

Maruo Calcium Co., Ltd. 1455 Nishioka, Uozumi-cho, Akashi City, Hyogo Pref. TEL. 078-942-2112
https://www.maruo-cal.co.jp/