(1) Production of o-aminophenol by a novel cat. 
The project adopts a new cat liquid phase catalytic hydrogenation to produce o-aminophenol with mild reaction conditions and high conversion rate. The self-developed environmental protection technology is used to recover o-aminophenol in the waste residue, and the comprehensive product yield is high. 
(2) Using new technology to treat production waste gas and recover o-nitrophenol. 
The project adopts self-developed exhaust gas treatment technology to treat the production waste gas, and recycles the o-nitrophenol recovery in it, which is energy-saving and environmentally friendly.

(1) Production of p-toluic acid by pure oxygen liquid phase catalytic oxidation process. 
The project uses purified air to obtain pure oxygen under temperature and pressure to carry out oxidation reaction, shorten oxidation reaction time, improve reaction efficiency, reduce by-product generation during oxidation, and have good selectivity to methylbenzoic acid. High yield. 
(2) Production of p-methylbenzoic acid by continuous catalytic oxidation and continuous distillation of a novel catalyst. 
The project adopts a new catalyst for continuous catalytic oxidation of p-xylene, continuous rectification to produce p-methylbenzoic acid, breaks the intermittent reaction barrier, has good continuity in production process, high production efficiency, stable product quality and less waste. 
(3) The new resin adsorption process is used to treat the oxidative wastewater in the production process. 
The project adopts a new resin adsorption process independently researched and developed to treat the oxidized wastewater generated during the production process. The process has no waste water discharge and is environmentally friendly.

(1) Liquid phase catalytic hydrogenation of cyclohexanone and dimethylamine to produce N,N-dimethylcyclohexylamine (PC-8), the reaction conditions are mild, the conversion rate is high, and the by-products are small. 
(2) An aqueous solution of benzyl chloride and dimethylamine is synthesized, layered, distilled, and packaged to produce N,N-dimethylbenzylamine (BDMA). 
(3) Liquid phase catalytic hydrogenation of diethylenetriamine and methanol to produce pentamethyldiethylenetriamine. The production process has good continuity, high production efficiency, stable product quality and less waste. 
(4) Dimethyl propylene diamine and formaldehyde are condensed, layered, cooled, and packaged to produce tris(dimethylaminopropyl)hexahydrotriazine (PC-41). 
(5) Phenol and dimethylamine are condensed, layered, cooled, distilled, and packaged to produce 2,4,6-tris(dimethylaminomethyl)phenol (DMP-30).