Istanbul celik boru sanayi ve ticaret sirketi

NORELEM FRANCE

Frankrijk – Fontaines Les Gres

MING XIAO MANUFACTURING CO., LTD

China – Ningbo

SHENZHEN PROMOSTAR HARDWARE CO.,LTD

Duitsland – Meerbusch

XIAMEN NINESUN IMP. & EXP. CO., LTD

China – Xiamen

SOOCHOW ADVANCE INDUSTRIES CO., LTD.

China – Suzhou