Is it normal for engineering cost consulting companies not to disclose their contact numbers?

Formal, not public.

Project cost consultation refers to the whole process and dynamic cost management of construction projects entrusted by the society, including feasibility study, investment estimation, project economic evaluation, project budget estimate, budget, project settlement, project completion settlement, project tender base price, tender quotation preparation and review, project cost monitoring and providing relevant project cost information. The main contents of engineering cost consulting service include: economic evaluation of feasibility study of construction project, investment estimation, preparation and review of post-project evaluation report; Preparation and review of budget, budgetary estimate, settlement and completion report of construction projects; Compilation and review of pre-tender estimate and bid quotation in the implementation stage of construction projects; Compilation and review of bill of quantities; The change of construction contract price and the calculation of claim cost: provide appraisal service for economic disputes of project cost; Provide cost monitoring and services for the whole process of construction projects; Provide engineering cost information services, etc.