The ethylene and propylene tank farm in the deep processing project of the methanol and acetic acid series at China Coal Yulin, which was EPC contracted by Huafu, is a high-starting-point project for the development of coal chemical industry by China Coal Group. The low-temperature storage spherical tanks have a single capacity of 3,000 cubic meters, which are currently the largest low-temperature spherical tanks in China from design to construction. The construction of 6 tanks at once also constitutes the largest group of low-temperature spherical tanks in the country.