Beijing Green Guardee who is a high-performance electronic chemical materials development company, located in the Zhongguancun Biomedical Park. Company developed a variety of OLED materials relying on advanced purification technology. Product quality has been recognized by international companies.
Our products are divided into five series: carbazole series, fluorene series, polycyclic series, anthracene series, aromatic amine series. The product quantity reaches a ton， and product quality exceeds customer expectations. For example, the NPB purity reached 99.9%. We specialize in the Bromination, Nitration Reaction, Iodination, Suzuki Reaction, Witting Reaction, Ullmann Reaction, sublimation, recrystallization, column purification, molecular distillation unit operation, able to accept grams to tons of synthesis services and refined processing services for customer.
We have a HPLC (Waters), DSC (Pyris6), TGA (Diamond), GC (GC-14C) and other means of detection. Advanced and complete testing means ensures the product quality.