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General projects: generator and generator set manufacturing; Sales of generators and generator sets; Motor manufacturing; Manufacturing of power electronic components; New energy dynamic equipment manufacturing; Pump and vacuum equipment manufacturing; Pump and vacuum equipment sales; Sales of power electronic components (except for items subject to approval according to law, independent business activities shall be carried out according to the business license) Licensed items: import and export of goods (items subject to approval according to law, business activities may be carried out only after approval by relevant departments, specific business projects shall be subject to approval documents or license certificates of relevant departments)