7
Power generators; 3D printers
11
Sewage and sludge purification filter
35
Retail of power generators, sewage and sludge purification filters, and 3D printers
37
Installation of power generation facilities, sewage and sludge purification filters, and 3D printers; Repair and maintenance of power generation facilities, sewage and sludge purification filters, and 3D printers
39
Electricity supply, Consulting on electricity supply
40
Purification of sewage and sludge, Consulting on purification of sewage and sludge; Rental of electric power generators; rental of sewage and sludge purification filters; rental of 3D printers; Three-dimensional printing (3DP) services; Power generation, Consulting on power generation
42
Consulting on how to use 3D printers; Technological advice relating to 3D printers and 3D printing application software; Research and development services relating to electricity generation; Design of power generation facilities, and sewage and sludge purification filters