Shandong Dingsheng Jinggong Co., Ltd

Address: Nonggao district, Yellow River Delta, Dongying city, China

Tel: 0546-6375877

Fax: 0546-6375878

Shandong Yuanda Shipbuilding Co., Ltd

Address: No. 113, Zibo Road, Dongying city, China

Tel: 0546-8701999

E-mail: ydsco@163.com

Dongying Zhicheng Jidian Technology Co., Ltd

Address: No. 15, Dongwu road, Dongying district, Dongying city, China.

Tel: 0546-8300094

Fax: 0546-8300094