Arc France SAS

Arques, France

CERVE S.P.A.

Parma, Italy

Chongqing Youyuan Glassware Co., Ltd

Chongqing, China

GAS Familia s.r.o.

Stará Ľubovňa, Slovakia

hpe-consulting GmbH Hans-Peter Esser

Dresden, Germany

Qingdao Crystal Glass Co.,Ltd

Qingdao Shandong, China

RITZENHOFF Cristal GmbH

Marsberg, Germany

Shandong Yuncheng Ruisheng Glass Co. Ltd

Heze Shandong, China

Stölzle Lausitz GmbH

Weißwasser, Germany

Trend Glass Sp. z o.o.

Radom, Poland

TURKIYE SİSE VE CAM FABRIKALARI A.S

İstanbul, Türkiye

Zieher KG

Himmelskron, Germany