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July, 2005, Dong Guan Shang Zhun Metal Co., Ltd certificated by ISO9001:2008Nov. 2009. Dong Guan Shang Zhun Metal Co., Ltd certificated by ISO14001:2004

In June, 2010, we became a approved supplier for Vivo, Nokia and cooperated with them for developing new designs together.

In Nov. 2017, we moved the factory to new address in order to meet the the demand of orders from different customers and countries