3050400000000000000

Decoration service

Refers to the decoration of buildings and structures to make them beautiful or have a specific purpose.

Decoration service, decoration

304030 10 10000000000

Engineering design service

Including construction engineering, coal engineering, chemical and petrochemical engineering, oil and gas engineering, power engineering, metallurgical engineering, mechanical engineering, commercial engineering, storage engineering, grain engineering, nuclear engineering, electronic communication and radio and television engineering, textile engineering, building materials engineering, railway engineering, highway engineering, water transportation engineering, civil aviation engineering, municipal engineering, agriculture and forestry engineering, water conservancy engineering, marine engineering, sports and leisure and entertainment engineering.

engineering design