November 15, Kaifeng Vice Mayor Wang Guoqing, Deputy Secretary Wang Xiangxuan and other officials went to Kaifeng Dear Air Separation, accompanied by ...
On August 6th, Kaifeng Dear Air Separation Industry Co., Ltd. cooperated with Qinghai Asia Silicon Semiconductor Co., Ltd. for the third time and sign...
On 16 August, Kaifeng Dear Air Separation Industry Co., Ltd. and Chongqing Panhua Plate Co., Ltd. cooperated again and signed the contract of KDON (Ar...
There was a room without doorplate in the company, and no employee knew what was in that room, because they had never entered. The general manager onc...
I. Preface With the rapid development of industry, nitrogen has been widely used in chemical engineering, electronics, metallurgy, food, machiner...
