亚洲夂夂婷婷色拍WW47,性做久久久久久免费观看,夜夜高潮夜夜爽夜夜爱爱,精品亚洲欧美无人区乱码

Fujian Yongjing Technology Co., Ltd. was founded in 2007. It is a national new and high-tech enterprise specialized in research, production of fluorine containing fine chemicals. The company operates deep processing of AHF materials from Yongfei Chemical, its wholly-owned subsidiary company. There is branch company in Shanghai. Its main business is research and development of fluorine containing liquid crystal and organic chemicals intermediates.

Main products

       ●industrial grade sulfur hexafluoride              
       ●electronic grade sulfur hexafluoride

       ●iodine pentafluoride                  
       ●electronic grade carbon tetrafluoride

       ●fluorine nitrogen mixture gas