Ostertag Werke AGGermany
Addis Ltd.Hertfordshire, United Kingdom
SIEG-HUAO GUSSWORKS (ANHUI) CO.,LTDAnhui Sheng, China
Wuhan Norman Technology Co. Ltd.Hubei Sheng, China
Guangzhou Baiguoyuan Information Technology Co., Ltd.
Beijing Hollysys System Integration Co., Ltd.Beijing Shi, China
Beijing Huaqing Kaier Air Purification Technology Co., Ltd.Beijing Shi, China
Changde Tobacco Machine Co. Ltd.Hunan Sheng, China
Dalian Huanzi Technology Co., Ltd.Liaoning Sheng, China
Dongguan Shengqi Lighting Technology Co. Ltd.
Beijing Water Supply Group Yutong Municipal Engineering Co., Ltd.Beijing Shi, China
Shanghai Yuanyu Energy Conservation and Environmental Protection Technology Co., Ltd.Shanghai Shi, China