GCD136X refers to ULVAC AIFAC oil rotary vane vacuum pumps, which are mainly used in the following industries. 

- Chemical industry: it can be used for various vacuum applications in chemical production, such as vacuum distillation, vacuum drying, vacuum filtration, etc. It can effectively remove water, impurities and solvents, and improve product quality and production efficiency.

- Pharmaceutical industry: it is suitable for the production and research and development process of drugs, such as drug synthesis, crystallization, drying and other aspects of the vacuum operation, which can prevent the oxidation and deterioration of drugs and ensure the stability and quality of drugs.

- Semiconductor industry: In the semiconductor manufacturing process, it is used to provide high purity vacuum environment, such as photolithography, etching, thin film deposition and other processes in chip manufacturing, which helps to improve the performance and reliability of semiconductor devices.

- Energy field: for example, in the petrochemical industry, natural gas processing and other energy-related industries, can be used for crude oil decompression distillation, natural gas dehydration and desulfurization processes, to improve the quality and productivity of energy products.

- Scientific experiments: Commonly used in various scientific research laboratories, such as chemical experiments, material science research, biomedical research, etc., to provide the required vacuum conditions for experiments, in order to carry out accurate experimental operations and data measurement.