Subcontract VE method

　Regarding the contract of construction and manufacturing (excluding the manufacture of goods) ordered by Yokohama City, in order to reduce the cost of construction by actively utilizing private technology development, after the contract is concluded, We implement a "post-contract VE method" that accepts proposals for changes in design documents related to construction materials, construction methods, etc. that can reduce the contract price without deteriorating the function and performance of the object.