Can the property with three supplies and one industry win the bid without convening the owners' meeting?

You can't. Before the owners' congress and the owners' congress select the realty service enterprise, the construction unit shall sign a written preliminary realty service contract. According to the "Regulations on Property Management", before the owners and the owners' congress select and employ the realty service enterprise, the construction unit shall sign a written preliminary realty service contract. The prophase realty service contract shall be filed with the real estate administrative department of the local people's government at or above the county level, the subdistrict office and the township people's government where the property is located.