for the following products
alpha-Naphthylphenyl benzidine | N,N'-bis-(1-Naphthalenyl)-N,N'-bis-phenyl-(1,1'-biphenyl)-4,4'-diamine | N,N'-bis-(1-Naphthalenyl)-N,N'-diphenylbenzidine | N,N'-bis-(Naphthalen-1-yl)-N,N'-bis(phenyl)benzidine | N,N'-di-[(1-Naphthyl)-N,N'-diphenyl]-1,1'-biphenyl)-4,4'-diamine | NPD and [1,1'-Biphenyl]-4,4'-diamine,N4,N4'-di-1-naphthalenyl-N4,N4'-diphenyl
Located in Hangzhou National Hi-Tech Industrial Development Zone, Hangzhou Zhongqi Chem Co.,Ltd is a technical company mainly focus on the Custom synthesis, manufacturing, sales of chemicals to various industries.
Our advantage :
1.We do not simply provide chemicals, we provide chemical solutions and expertise;
2.We have trained, highly effective team to solve the problem at the first time;
3.Our QMS (quality management system) ensures the product quality strictly;
4.Strong rese...
