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List of Group Companies

Operating Companies

Dowa Eco-System Co., Ltd.
Environmental management and recycling
22F, Akihabara UDX Bldg., 4-14-1, Sotokanda, Chiyoda-ku, Tokyo 101-0021 TEL: 81-3-6847-1230
FAX: 81-3-6847-1240
Dowa Metals & Mining Co., Ltd.
Nonferrous metals
TEL: 81-3-6847-1200
FAX: 81-3-6847-1210
Dowa Electronics Materials Co., Ltd.
Electronic materials
TEL: 81-3-6847-1250
FAX: 81-3-6847-1260
Dowa Metaltech Co., Ltd.
Metal-processing
TEL: 81-3-6847-1252
FAX: 81-3-6847-1261
Dowa Thermotech Co., Ltd.
Heat treatment
TEL: 81-3-6847-1170
FAX: 81-3-6847-1281

Business Support Companies

Dowa Management Services Co., Ltd.
Consigned operations related to accounting and information systems, general affairs, and materials procurement
22F, Akihabara UDX Bldg., 4-14-1, Sotokanda, Chiyoda-ku, Tokyo 101-0021
TEL: 81-3-6847-1151
FAX: 81-3-6847-1161
Dowa Technology Co., Ltd.
Support for heightening the Dowa Group’s business and technological capabilities
22F, Akihabara UDX Bldg., 4-14-1, Sotokanda, Chiyoda-ku, Tokyo 101-0021
TEL: 81-3-6847-1105
FAX: 81-3-6847-1161

Operating Subsidiaries

Subsidiaries Affiliated with Dowa Eco-system

E & E Solutions Inc.
Comprehensive technological consulting in environmental management and energy
22F, Akihabara UDX Bldg., 4-14-1, Sotokanda, Chiyoda-ku, Tokyo 101-0021
TEL: 81-3-6328-0080
FAX: 81-3-5295-2051
Eco-System Japan Co., Ltd.
Collection, transport, and processing of industrial waste, specially controlled industrial waste
22F, Akihabara UDX Bldg., 4-14-1, Sotokanda, Chiyoda-ku, Tokyo 101-0021
TEL: 81-3-6847-7010
FAX: 81-3-6847-7015
Eco-System Akita Co., Ltd.
Complete processing of industrial waste, resource recycling
42 Tsutsumisawa, Hanaoka-machi, Odate-shi, Akita 017-0005
TEL: 81-186-46-1436
FAX: 81-186-46-3628
Eco-System Chiba Co., Ltd.
Industrial waste processing
1-1-51, Nagaurataku, Sodegaura-shi, Chiba 299-0265
TEL: 81-438-62-4097
FAX: 81-438-62-4928
Meltec Co., Ltd.
Melting and recycling of incinerated ash, manufacture and sale of artificial aggregate
2333-29 Atago, Yana, Oyama-shi, Tochigi 323-0158
TEL: 81-285-49-1080
FAX: 81-285-49-1084
Eco-System Sanyo Co., Ltd.
Total industrial waste processing; resource recycling
1125, Kichigahara, Misaki-cho, Kume-gun, Okayama 708-1523
TEL: 81-868-62-1346
FAX: 81-868-62-1345
Okayama Koyu Co., Ltd.
Cargo handling and warehousing at Okayama Bay; real estate management
1048-1, Hinotani, Kichigahara, Misaki-cho, Kume-gun, Okayama 708-1523
TEL: 81-869-64-2775
FAX: 81-869-64-2598
Kowa Seiko Co., Ltd.
Industrial waste processing, recovery of ferrous and nonferrous materials
46-93, Nakabaru, Tobata-ku, Kitakyushu-shi, Fukuoka 804-0002
TEL: 81-93-872-5155
FAX: 81-93-873-1030
Green Fill Kosaka Co., Ltd.
Controlled landfill of industrial and general waste
60-1, Otarube, Kosakakouzan, Kosaka-machi, Kazuno-gun, Akita 017-0202
TEL: 81-186-29-2924
FAX: 81-186-29-2964
Eco-System Recycling Co., Ltd.
Recovery of precious and nonferrous metals; leasing, operation, and maintenance of recovery equipment
1718-3, Nitte, Honjou-shi, Saitama 367-0002
TEL: 81-495-21-1982
FAX: 81-495-24-8406
Eco-Recycle Co., Ltd.
Remanufacturing and reprocessing of used consumer electronics and appliances, and used office products
30-2, Douyashiki, Hanaoka-machi, Odate-shi, Akita 017-0005
TEL: 81-186-47-1001
FAX: 81-186-47-1002
Act-B recycling Co., Ltd.
Remanufacturing and reprocessing of used consumer electronics and appliances, and used office products
278-6, Shiohama-cho, Minamata-shi, Kumamoto 867-0067
TEL: 81-966-62-3300
FAX: 81-966-62-3338
Auto Recycle Akita Co., Ltd.
Remanufacturing and reprocessing of used automobiles
96, Sugisawa, Kosakakouzan, Kosaka-machi, Kazuno-gun, Akita 017-0202
TEL: 81-186-30-7313
FAX: 81-186-29-5185
Eco-System Okayama Co., Ltd.
Industrial waste processing; recovery of ferrous and nonferrous materials
1-3-1, Kaigan-dori, Okayama-shi, Okayama 702-8506
TEL: 81-86-262-9020
FAX: 81-86-262-0271
Eco-System Kosaka Co., Ltd.
Industrial waste processing; recovery of ferrous and nonferrous materials
60-1, Otarube, Kosakakouzan, Kosaka-machi, Kazuno-gun, Akita 017-0202
TEL: 81-186-29-2700
FAX: 81-186-29-5200
Biodiesel Okayama Co,. Ltd.
Production of biodiesel fuels (BDF) sourced from used cooking oils
1-3-1, Kaigan-dori, Minami-ku, Okayama-shi, Okayama 702-8506
TEL: 81-86-261-6050
FAX: 81-86-261-6051
Eco-System Hanaoka Co., Ltd.
Soil remediation, industrial waste processing, resource recycling
42 Tsutsumisawa, Hanaoka-machi, Odate-shi, Akita 017-0005
TEL: 81-186-46-2311
FAX: 81-186-46-1651
Geotechnos Co., Ltd.
Soil surveys and remediation projects, environmental consulting (overseas assistance, ODA, geological surveys)
14F, Tokyo Sky Tree East Tower, 1-1-2, Oshiage, Sumida-ku, Tokyo 131-0045
TEL: 81-3-3626-4580
FAX: 81-3-3626-4581
Dowa-Tsuun Co., Ltd.
Land transport, shipping, and warehousing
69-1, Nakada, Sakurakawa, Mizusawa-ku, Oushu-shi, Iwate 023-0003
TEL: 81-197-25-5353
FAX: 81-197-24-8443
Dowa Environmental Management Co., Ltd.
Metal recycling and waste processing, and recycle of home appliances
No.28 Sanlian Street, Suzhou New District, Jiangsu 215129 CHINA
TEL: 86-512-8518-8100
FAX: 86-512-8518-8108
Dowa Environmental Engineering (Suzhou) Co., Ltd.
Contaminated soil and groundwater investigation and remediation
Block 2-1007, China Suzhou Innovation Park, No.209 Zhuyuan Road, Suzhou New District, Jiangsu 215011 CHINA
TEL: 86-512-8518-7700
FAX: 86-512-8518-7708
Tianjin Dowa Green Angel Summit Recycling Co., Ltd.
Recycle of home appliances
26 Zhejiang Road,Tianjin Ziya Circular Economy Industrial Area,Jinghai Prefecture,Tianjin,China 301600
TEL: 86-22-6829-1788
FAX: 86-22-6829-1790
JIANGXI DOWA ENVIRONMENTAL MANAGEMENT CO., LTD.
Contaminated soil and groundwater investigation and remediation, pick-up recycling materials
New District, Huangxi Town, Yujiang, Yingtan, Jiangxi 335200, China
TEL: 86-701-538-6518
FAX: 86-701-538-6018
DOWA ECO-SYSTEM CO., LTD. Taiwan Office
Soil surveys and remediation projects, environmental consulting
Room2-501, Times Plaza, Yingtan, China(Temp. office)
TEL: 86-0701-628-9229
FAX: 86-0701-628-9227
WMS
(Waste Management Siam Ltd.)
Central City Tower 1,25th floor, 589/142 Bangna-Trad(k.m.3)Road,
Kwaeng Bangna, Khet Bangna, Bangkok 10260,Thailand
TEL: 66-2-745-6926-7
FAX: 66-2-745-6928
BPEC(Bangpoo Environmental Complex Ltd.)

966 moo 2 Soi 3, Bangpoo Industrial Estate, Sukhumvit Rd,
Bangpoo Mai, Muang Samutprakarn, Samutprakarn 10280 Thailand
TEL : 66-2-709-2546
FAX : 66-2-709-2547
ESBEC(Eastern Seaboard Environmental Complex Co.,Ltd.)

88 moo 8 Tamborn Bowin, Amphur Sriracha
Chonburi 20230 Thailand
TEL : 66-38-346-364-7
FAX : 66-38-346-368
TEC(Technochem Environmental Complex Pte. Ltd.)

23 Tuas Avenue 11, Singapore 639086
TEL : 65-6862-3130
FAX : 65-6861-1873
DOWA ECO-SYSTEM SINGAPORE PTE. LTD.

13 Benoi Crescent Singapore 629976
TEL : 65-6261-7366
FAX : 65-6261-8723
PPLi(P.T. Prasadha Pamunah Limbah Industri)

Jl. Raya-Narogong Desa Nambo PO Box 18-Cileungsi, Bogor 16820 Indonesia
TEL : 62-21-867-4042
FAX : 62-21-867-4043

Subsidiaries Affiliated with Dowa Metals & Mining

Akita Zinc Co., Ltd.
Zinc smelting, sulfuric acid manufacturing
217-2, Furumichi-Shimokawabata, Iijima, Akita-shi, Akita 011-0911
TEL: 81-18-846-1121
FAX: 81-18-845-9051
Akita Zinc Solutions Co., Ltd.
Consignment manufacturing of tailored zinc, zinc alloy, zinc wire, and other products
1 Sunada, Iijima, Akita-shi, Akita 011-0911
TEL: 81-18-845-6069
FAX: 81-18-845-8037
Akita Zinc Recycling Co., Ltd.
Recover zinc from iron and steel dust
1 Sunada, Iijima, Akita-shi, Akita 011-0911
TEL: 81-18-846-7918
FAX: 81-18-845-9051
Akita Recycle & Finepack Co., Ltd.
Preprocessing of materials for smelting, plastic resin packing material, manufacturing and sale of materials
76-1 Otarube, Kosakakouzan, Kosaka-machi, Kazuno-gun, Akita 017-0202
TEL: 81-186-29-3467
FAX: 81-186-29-3466
Akita Rare Metals Co., Ltd.
Recovery of gallium, indium, and other materials
217-9, Furumichi-Shimokawabata, Iijima, Akita-shi, Akita 011-0911
TEL: 81-18-846-1794
FAX: 81-18-845-9051
Acids Co., Ltd.
Sale of sulfuric acid, sodium bisulfite, ferrous sulfate, gypsum, etc.
Daiwai Shimbashi 510 Bldg., 5-10-5, Shimbashi, Minato-ku, Tokyo 105-0004
TEL: 81-3-6402-7531
FAX: 81-3-3437-0223
Kosaka Smelting & Refining Co., Ltd.
Copper and lead smelting, sulfuric acid manufacturing
60-1 Otarube, Kosakakouzan, Kosaka-machi, Kazuno-gun, Akita 017-0202
TEL: 81-186-29-2700
FAX: 81-186-29-5200
Zinc Excel Co., Ltd.
Sale of lead, zinc, bismuth, cadmium, tellurium, tailored zinc for plating, zinc alloy for diecasting, zinc powder, corrosion-proof zinc, rub-resistant zinc alloys, zinc anodes, zinc wire, etc.
Akihabara UDX Bldg., 4-14-1, Sotokanda, Chiyoda-ku, Tokyo 101-0021
TEL: 81-3-6847-1270
FAX: 81-3-6847-1280
Nippon PGM Co., Ltd.
Manufacturing and sale of platinum group metals using disposable catalysts
76-1 Otarube, Kosakakouzan, Kosaka-machi, Kazuno-gun, Akita 017-0202
TEL: 81-186-29-2744
FAX: 81-186-29-2722
NIPPON PGM AMERICA, INC.
Crushing, material sampling, and transport of disposable catalysts
500 Richards Run, Burlington NJ08016,
USA
TEL: 1-609-747-9994
FAX: 1-609-747-8245
Nippon PGM Europe s.r.o.
Crushing, material sampling, and transport of disposable catalysts
Heyrovského 488, 46210 Liberec23 Česká republika
TEL: 420-488-100-271
FAX: 420-488-100-222
Minera Tizapa, S.A. de C.V.
Nonferrous metals
Calzada Manuel Gómez Morín #44
Col. Torreón Residencial
C.P. 27268, Torreón, Coahulia
México
TEL: 52-871-729-3442
FAX: 52-871-729-3327

Subsidiaries Affiliated with Dowa Electronics Materials

Dowa Electronics Materials Okayama Co., Ltd.
Manufacturing of metal powder, copper powder, and barium sulfate
1-3-1, Kaigan-dori, Minami-ku, Okayama-shi, Okayama 702-8506
TEL: 81-86-262-1121
FAX: 81-86-262-1033
Dowa IP Creation Co., Ltd.
Manufacturing of solvents, powdered metals, and iron powder for use in copiers
7, Chikkousakae-machi, Minami-ku, Okayama-shi, Okayama 702-8053
TEL: 81-86-262-2228
FAX: 81-86-264-7382
Dowa Hightech Co., Ltd.
Manufacturing and surface treatment of metal compounds, finished metal goods, chemical products, and electronic components
1718, Nitte, Honjou-shi, Saitama 367-0002
TEL: 81-495-21-6111
FAX: 81-495-21-6116
Dowa Semiconductor Akita Co., Ltd.
Manufacturing of high-purity metal materials, compound semiconductor substrates, and light-emitting diodes
1, Sunada Iijima, Akita-shi, Akita 011-0911
TEL: 81-18-846-8000
FAX: 81-18-846-9478
Dowa F-Tec Co., Ltd.
Ferrite powder manufacturing
1045, Kichigahara, Misaki-cho, Kume-gun, Okayama 708-1523
TEL: 81-868-62-1144
FAX: 81-868-62-1146

Subsidiaries Affiliated with Dowa Metaltech

Dowa Power Device Co., Ltd.
Circuit board manufacturing
Shiojiri Interchange Rinkan Kougyou Danchi, 9637-3, Manaitahara, Oazakataoka, Shiojiri-shi, Nagano 399-0711
TEL: 81-263-53-0770
FAX: 81-263-53-1770
New Nippon Brass Co., Ltd.
Manufacturing and sale of various types of brass bar and forged products
5844-3, Kamakazu, Asahi-shi, Chiba 289-2505
TEL: 81-479-62-0444
FAX: 81-479-62-0404
Dowa Metal Co., Ltd.
Manufacturing of copper and brass bars, and other copper strip products
767, Matsunokijima, Iwata-shi, Shizuoka 438-0125
TEL: 81-539-62-3131
FAX: 81-539-62-3996
Dowa Metanix Co. Ltd.
Manufacturing and sale of Nickel and copper alloys, and electronic components
2630, Shingai, Iwata-shi, Shizuoka 438-0025
TEL: 81-538-32-7138
FAX: 81-538-32-9008
DOWA-OLIN METAL CORPORATION
Manufacturing and sale of special copper alloys
2630, Shingai, Iwata-shi, Shizuoka 438-0025
TEL: 81-538-37-5111
FAX: 81-538-37-0147
Hoei Shoji Co., Ltd.
Processing and sale of copper strip products and aluminum products
1598-1, Kotehashi-cho, Hanamigawa-ku, Chiba-shi, Chiba 262-0013
TEL: 81-43-286-2601
FAX: 81-43-286-2621
Dowa Hightech Co., Ltd.
Manufacturing and surface treatment of metal compounds and finished metal goods, chemical products and electronic parts
1718, Nitte, Honjou-shi, Saitama 367-0002
TEL: 81-495-21-6111
FAX: 81-495-21-6116
Dowa Advanced Materials (Shanghai) Co., Ltd.
Processing and sale of copper strip products
No.7 Studio, 8 Rongxiang Road, Shanghai Songjiang Export Processing Zone, Shanghai, China
TEL: 86-21-5774-8118
FAX: 86-21-5774-8338
Dowa Metaltech (Thailand) Co., Ltd.
Processing and sales of copper strip products
Gateway City Industrial Estate (in export-processing zone), Chachoengsao Province, Thailand
TEL: 66-3857-5715
FAX: 66-3857-5684

Subsidiaries Affiliated with Dowa Thermotech

CEMM Co., Ltd.
Heat treatment of metals; design and production of heat treatment equipment
19-1, Ukishima-cho, Miizuho-ku, Nagoya-shi, Nagoya 467-0854
TEL: 81-52-693-0181
FAX: 81-52-694-5337
Dowa Thermoengineering Co., Ltd.
Design, manufacturing, maintenance and upgrade of various types of industrial furnaces
Various types of heat treatment and surface treatment

19-1, Ukishima-cho, Mizuho-ku, Nagoya-shi, Aichi 467-0854
TEL: 81-52-691-9321
FAX: 81-52-692-3886
Tonetsu Kosan Co., Ltd.
Trading, international business, leasing business, real estate business, public relations and advertising, travel and leisure business, transport business
19-1, Ukishima-cho, Mizuho-ku, Nagoya-shi, Aichi 467-0854
TEL: 81-52-698-2270
FAX: 81-52-698-2271
Dowa THT America, Inc.
Heat treatment of metals on consignment
2130 South Woodland Circle, Bowling Green, Ohio 43402, USA
TEL: 1-419-354-4144
FAX: 1-419-354-6479
Dowa Thermotech (Thailand) Co., Ltd.
Heat treatment of metals on consignment; maintenance of heat treatment equipment
300/33 Moo 4,Tambol Tasit,Amphur Pluakdaeng,Rayong 21140 Thailand
TEL: 66-3895-9008 & 66-3895-9009
FAX: 66-3895-9097
Kunshan Dowa Thermo Furnace Co., Ltd.
Heat treatment of metals on consignment; maintenance of heat treatment equipment
No.298 Jiguang South Road Shipu, Qiandeng, Kunshan, Jiangsu 215343, China
TEL: 86-512-8262-5600
FAX: 86-512-8262-5608
HIGHTEMP FURNACES LTD.
Heat treatment of metals on consignment; maintenance of heat treatment equipment
1C, 2nd Phase, Peenya Industrial Area, Bangalore-560 058. India
TEL: +91-80-2839-5917
FAX: +91-80-2839-1376
PT.DOWA THERMOTECH INDONESIA
Heat treatment of metals on consignment
Jl. Maligi VI Lot G-4, Kawasan Industri KIIC, Karawang 41361, West Java, Indonesia
TEL: 62-21-8911-4346
FAX: 62-21-8911-4348
PT.DOWA THERMOTECH FURNACES
Marketing and maintenance of heat treatment equipment
Jl. Maligi VI Lot G-4, Kawasan Industri KIIC, Karawang 41361, West Java, Indonesia
TEL: 62-21-8911-4346
FAX: 62-21-8911-4348

Other Subsidiaries

Unekura Mining Co., Ltd.
Management of abandoned mines; pit wastewater treatment
42 Tsutsumisawa, Hanaoka-machi, Odate-shi, Akita 017-0005
TEL: 81-186-46-2575
FAX: 81-186-46-2103
Dowa Tecno-Reseach Co., Ltd.
Environmental measurement , working environment measurement certification business, consigned general analysis, geoscientific analysis, research for the mining and manufacturing industries, and development of new analysis technology
60-1, Otarube, Kosakakouzan, Kosaka-machi, Kazuno-gun, Akita 017-0202
TEL: 81-186-29-2781
FAX: 81-186-29-2792
Akita Kouei Co., Ltd.
General civil engineering projects, construction products, electricity business, plant maintenance business, drilling business, vehicle maintenance business
2-2-8, Onari-cho, Odate-shi, Alkita 017-0044
TEL: 81-186-49-4152 
FAX: 81-186-49-4154
Dowa Techno Engineering Co., Ltd.
Plant construction
31-10, Chikkou-sakaemachi, Okayama-shi, Okayama 702-8609
TEL: 81-86-262-9208
FAX: 81-86-262-9218
Yowa Kouei Co., Ltd.
Civil engineering, installation of machinery, electrical engineering, heavy concrete works, dismantlement of used electric machinery
7-2 Chikkou-sakaemachi, Okayama-shi, Okayama 702-8609
TEL: 81-86-264-9034
FAX: 81-86-264-8412
Dowa Kohsan Co., Ltd.
Consigned management of golf courses, office buildings, condominiums, and apartment buildings; agency business
31-10, Chikkou-sakaemachi, Okayama-shi, Okayama 702-8609
TEL: 81-86-262-1141
FAX: 81-86-262-2343
Dowa International Corporation
Information gathering, marketing, and import/export operations
370 Lexington Avenue,
New York, NY 10017-6503, U.S.A.
TEL: 1-212-697-3217
FAX: 1-212-697-3902
DOWA HD Europe GmbH
Information gathering, marketing, and import/export operations
Ostendstrasse 196, D-90482, Nurnberg, Germany
TEL: 49-911-56989-320
FAX: 49-911-56989-32-50
Dowa Holdings (Shanghai) Co., Ltd.
Information gathering, marketing, and import/export operations
D-903, Hongqiao Int'l. Technology Plaza, No.999 Jinzhong Road, Shanghai 200335, China
TEL: 86-21-6275-2121
FAX: 86-21-6275-5252
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