4,4 '- diaminodiphenyl ether: white massive crystals, crystalline powder or recrystallized particles (yellowish or grayish color is allowed), tasteless.

Purpose:

1. Synthetic polyimide, used in aerospace, insulating materials, engineering plastics, microelectronics (5G base station), ultrafiltration membrane, photoelectric materials, etc;

2. Synthesis of polyetherimide for FPCB, aircraft, medical equipment, household appliances, etc;

3. Synthetic FBI for aerospace, microelectronics and other fields;

4. It can be used in the production of cross-linking agents and widely used in the production of azo dyes, reactive dyes, spices and other fields instead of benzidine, which has carcinogenic effects.

Capacity: 6000 t/a, Phase I 3000t/a under construction.