Cleaning and Security Guard Business Proposal

Hello, We are looking for someone or a company to help us write winner business proposals for Security Guard Service and a Cleaning (Janitorial) service. These proposals will be customised toward the particular projects we are trying to acquire; Janitorial for Airline (Aircraft Inside Cleaning) and Security Guard Service for a Town Center Shopping Complex. We want someone that is very familiar with these industries and have pricing knowledge/experience.