2013

Category: History

Published Time: 2025-06-26

Summary: In October, a ready-mixed mortar production line with independent intellectual property rights was put into operation; Qingdao Yihong Dry Mortar Technology Co., Ltd. was established.

In October, a ready-mixed mortar production line with independent intellectual property rights was put into operation; Qingdao Yihong Dry Mortar Technology Co., Ltd. was established.

Keywords: 2013

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