40 Custom building of furniture comprising custom-designed and custom-built desks, tables, display counters, chairs, sofas, armchairs, and other furnishings, with built-in smart devices, computers, power generators and power supplies, routers, lighting mechanisms, electronic displays, and communication equipment; Custom manufacture of furniture comprising custom-designed and custom-built desks, tables, display counters, chairs, sofas, armchairs, and other furnishings, with built-in smart devices, computers, power generators and power supplies, routers, lighting mechanisms, electronic displays, and communication equipment; Manufacture of general product lines in the field of furniture with built-in electronics and computing systems to the order and specification of others