The main products are applied to the linker part of new ADC drugs, and all technologies come from the independent research and development and innovation of the company's R&D team. The main advantageous products are several key materials used in ADC drug linkers - polyethylene glycol compounds, monodisperse polyethylene glycol derivatives (amino groups, carboxylic acids, azides), etc. Flow skids are used to completely solves the risk of explosion in the synthesis process of this compound, and also increase the production capacity. Synthesis of Azide compounds at the 100 kg scale was achieved by optimizing the continuous flow reaction process. The purity of its products has reached 99%+, and the key impurities (homologues and derivatives) are controlled at a high-quality level of less than 0.3%.