2018Year
Renamed&32;Shanghai&32;Electric&32;Matechstone&32;Engineering&32;Group&32;Co.,&32;Ltd.
2016Year
Established&32;Matechstone&32;Engineering&32;(Changzhou)&32;Co.,&32;Ltd.
2015Year
Establish&32;"Shanghai&32;yan&32;concrete&32;treatment&32;and&32;construction&32;technology&32;co.,&32;LTD."