Stone Machinery Aluminus-plastic Door and Window Equipment

Shandong Yihe Machinery Co., Ltd.

Jinan Yinshan Sewing Equipment Co., Ltd. (Tianheyuan Chunyuan Branch)

Jinan Xuheng Standard Element Co., Ltd.

Wanguanji Suoguanji Qieguanji

Jinan Xinguixiang Steel Material Co., Ltd.