The International Society for Trenchless Technology

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VODOKANALPROEKT JSCo

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Country Bulgaria (BATT)
Address 6th September Blvd. 250 Plovdiv

VODOSNABDYAVANE I KANALIZATSIA Ltd.

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Country Bulgaria (BATT)
Address 62 Hristo Botev str

VODOVODY A KANALIZACE Jablonne nad Orlici a.s.

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Country Czech Republic (CZSTT)
Address Slezska 350 JABLONNE nad Orlici
Website www.vak.cz

Volta Macchine Srl

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Country Italy (IATT)
Address Lungo Isarco Destro, 24 Bolzano

VOLTRAK SRL

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Country Romania (RoSTT)
Address Calea Vacaresti 234, bl. 34, sc.A, ap. 2, Bucuresti, Distric 4,

Warren Smith and Partners

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Country Australia (ASTT)
Address Level 1, 123 Clarence Street SYDNEY NSW

Water Corporation

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Country Australia (ASTT)
Address 629 Newcastle Street LEEDERVILLE WA
Website www.watercorporation.com.au

Water Resources Department, New Taipei City Government

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Country Taiwan (CTSTT)
Address 12F. No.161 Sec. 1 Jhongshan Rd. Banciao Dist. New Taipei City

Watercare Services Ltd

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Country New Zealand (ASTT)
Address Private Bag 92 521 AUCKLAND

Waterland Detection Engineering Ltd.

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Country Hong Kong (CHKSTT)
Address Rm 902, 9th floor, Blk A, Sun Fung Centre, 88 Kwok Shui Road, Kwai Chung, NT Hong Kong
Website www.waterland.com.hk

Waternet

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Country Nederland (NSTT)
Address Postbus Amsterdam
Website www.waternet.nl

Wayss & Freytag Ing.-bau AG, Bereich Tunnelbau

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Country Germany (GSTT)
Address Eschborner Landstr. 130-132 Frankfurt

WBHO Pipelines (formerly Insitu Pipelines (Pty) Ltd)

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Country South Africa (SASTT)
Address P O Box 531 BERGVLEI

Wessex Water

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Country United Kingdom (UKSTT)
Address Kingston Seymour STW Clevedon Avon

Wiener Betriebs- und Baugesellschaft m.b.H.

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Country Austria (AATT)
Address Wildpretstrasse 6 1110 Wien

WIND Telecomunicazioni spa

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Country Italy (IATT)
Address Via Giulio Cesare Viola 48 Roma
Website www.wind.it

Witteveen & Bos Raadgevende Ingenieurs BV

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Country Nederland (NSTT)
Address Postbus Rotterdam
Website www.witteveenbos.nl

WK Construction (SA)

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Country South Africa (SASTT)
Address 21 Otto Volek Road NEW GERMANY

WOMBAT s.r.o.

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Country Czech Republic (CZSTT)
Address Brezinova 759/23 BRNO
Website www.wombat.cz

WPR SRL

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Country Italy (IATT)
Address Via V. Gemito 16 Napoli
Website www.wprsrl.com

WSP Group

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Country Finland (FISTT)
Address Heikkiläntie 7 Helsinki
Website www.wspgroup.fi

Wuhan Tuozhan Underground Pipeline Engineering Co.

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Country China (CSTT)
Address Huaqianyi Village 27 28th Bld. Unit 2 Room 302 Jiangan Dist Wuhan

Wuxi Drilling Tools Factory of Geology And Mineral Resources

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Country China (CSTT)
Address Changyuan Rd. 8, Huishan Dist Wuxi City Jiangsu

Xiamen Branch of Jiangxi China Coal Construction Group Co.

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Country China (CSTT)
Address Yongshenghailian Building 402, Xianyue Road 456, Siming Dist Xiamen City

Xiamen ChengJian Construction Co

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Country China (CSTT)
Address Jinzuan Family 3# Room c, Children's Park Road 138, Taijiang Dist Fuzhou City

Xiamen Haotai Communication Engineering Co.

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Country China (CSTT)
Address Lianqiand East Rd. Honglianxili 54# Room 101 Xiamen City Fujian

Xuzhou Xugong Foundation Engineering Machinery Co.

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Country China (CSTT)
Address Jinshanqiao Industrial Development Zone Xuzhou City Jiangsu

YAMADA SHOKAI CO.,LTD.

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Country Japan (JSTT)
Address (株)山田商会 名古屋市港区新川町2丁目1番地の4
Website www.ymax.co.jp/index.html

YAMIL SABBAGH CONSTRUCCIONES SAS

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Country Colombia (CISTT)
Address CRA 7 N 127 - 48 OF 406 Bogota D.C. Bogota D.C.
Website www.ysconstrucciones.com

Yasuda Engineering Co.,Ltd

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Country Japan (JSTT)
Address ヤスダエンジニアリング㈱ 浪速区塩草3-2-26
Website www.yasuda-eng.co.jp/

YBM Co.,Ltd.

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Country Japan (JSTT)
Address ㈱ワイビーエム 唐津市原1534
Website www.ybm.jp/

Zennkoku Joint Pipe Kyoukai

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Country Japan (JSTT)
Address 全国Wジョイント管協会    柏崎市栄町7-8 藤村ヒュ-ム管㈱内
Website www.w-joint.gr.jp/

ZEPRIS s.r.o.

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Country Czech Republic (CZSTT)
Address Mezi Vodami 27 PRAHA 4
Website www.zepris.cz

Zharfkarejam

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Country Iran (ISTT)
Address No. 123 East Allameh Amini St. Esfahan Esfahan
Website zharf.aronco.net/

Zibo Yemai Construction Co

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Country China (CSTT)
Address Gongqingtuan East Rd. 14, zhangdian Dist Zibo City Shandong

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