Gravity Company has excellent transportation and geographical location, and its products are sold all over the country. With rich experience in manufacturing petrochemical machinery and equipment for high-temperature environment, low-temperature environment and corrosive environment, Gravity has provided large-scale and high-quality equipment, such as convection section of ethylene cracker, polypropylene (ethylene) annular tube reactor, heat exchanger, casing crystallizer, medium-thick-wall reactor and so on, for the development of China's petrochemical industry. At present, the two pillar products of Gravity - ethylene cracker convection section (tube bundle and module), polypropylene (ethylene) ring tube reactor in the domestic market occupies a large ratio, in addition, the manufacturing of hydrogenation reactor has also achieved good results in recent years, Gravity is gradually becoming a major petrochemical equipment manufacturing base in South China.