(e) engineering services; advertising; advertising; conference and exhibition services (to be approved by the relevant sector); professional design services; manufacturing of radar and ancillary equipment; manufacturing of communications equipment; manufacturing of exercise and powder metallurgical products; manufacturing of car wash equipment; manufacturing of materials; marketing of equipment for the production of materials; contracting of works for the production of materials; distribution of engineering services; flat design; engineering services; sale of software and equipment for the sale of equipment for the sale of robotics; production of equipment for the sale of equipment for the sale of electronics and equipment for the sale of robotics; production of equipment for the sale of equipment for the sale of electronics and mechanicals; production of equipment for the sale of electronics and equipment for the sale of electronics and mechanicals; production of equipment for the ...