Hangzhou sodium exhibition exhibitions ltd. Is registered at 408 north dry street, golden city road, north shore, hangzhou city, zhejiang province; 2 2703 room-39 (self-declared); registered at hangzhou international business centre, 2 2703 room-39 (autonomous declarations); installation of environmental health services; engineering management services; cultural and entertainment broker services; planning and management of software development; technical services, technical advice, technical exchange, technology transfer, technical promotion; advertising advertising; designing design; brand management; designing of business images; professional design services; digital content production services (excluding publication); film production services; industrial engineering services; urban and city capability management; installation of environmental health services; engineering management services; cultural and relaying broker services; supplying and supplying of buildings and metals; s...