... August 1990, the Chemical Plant conducted the second technical reconstruction. At that time, the domestic enterprises ... 1994, the Chemical Plant conducted the third technical reconstruction. It invested 3 million Yuan to ... Co., Ltd, Rizhao Jindi (Golden Emperor) Trading Co., Ltd, Rizhao Jiejing Ocean Biotechnology Development Co., Ltd, and a J/V of South-Africa Jiejing Imp. & Exp. Trading Co.,Ltd ...