Specialized Visitors
1、government institution, planning department, construction department, building department and relevant government official above the town level
2、manager and personnel of engineering project, party a of engineering, real estate, contractor, finishing and decoration company, material purchasing administration, hotel, management administration of public property
3、designing institution: construction reconnaissance, design, supervision and consultation units; construction scientific research academy and college
4 、traders: wholesaler, retailer, agency and individual proprietor in construction material market