Huachong Experiment Instrument

Zibo Kexiao Instrument Co., Ltd.

Hongqi Meter (Shangchang East Road Shop)

Hongyuan Instruments of Surveying and Mapping

Xinglu Instruments of Surveying and Mapping Bookstore

Zibo Lairun Chemical Industry Co., Ltd. (Zibo Guanshangshi Antique Culture City Branch)