What is the relationship between Huai 'an League of Nations and Wuxi League of Nations?

Huaian Guolian Environmental Protection Technology Co., Ltd. is a wholly-owned subsidiary of Wuxi Guolian Environmental Protection Technology Co., Ltd., which is mainly responsible for sludge treatment and disposal of urban sewage treatment plants. The parent company Wuxi Guolian Environmental Protection Technology Co., Ltd. is a state-owned holding enterprise, and its main business direction is to invest, construct and operate sludge reduction, harmless and resource disposal projects in sewage treatment plants. The sludge disposal technology and technology are leading in China.