The target business customers for building materials in the USA can vary depending on the type of building material being sold. However, some common target customers include:

1. Contractors: Contractors are one of the biggest target customers for building materials, as they are responsible for building and remodeling structures. A sales strategy for this type of customer could include offering special pricing or discounts for bulk orders, providing training and support for new products or technologies, and offering a range of products that meet a variety of project needs.

2. Builders/Developers: Builders and developers are another important target customer group for building materials, as they are involved in the planning and construction of large-scale commercial and residential projects. A sales strategy for this type of customer could include offering custom product solutions for large-scale projects, providing on-time delivery and reliable service, and building strong relationships with key decision-makers.

3. Architects/Designers: Architects and designers are responsible for creating the plans and specifications for building projects. A sales strategy for this type of customer could include offering high-quality and innovative products that meet the latest design trends and standards, providing expert advice and guidance on product selection, and offering custom solutions that meet specific project requirements.

4. Distributors/Wholesalers: Distributors and wholesalers are responsible for purchasing and selling building materials to other businesses. A sales strategy for this type of customer could include offering competitive pricing, providing quick and reliable delivery, offering a wide range of products that meet diverse customer needs, and building strong partnerships with key distributors and wholesalers in the industry.

5. Homeowners: Homeowners are also a target customer group for building materials, particularly for home improvement projects. A sales strategy for this type of customer could include offering a wide range of DIY-friendly products and materials, providing educational content and tutorials to help homeowners make informed decisions, and providing exceptional customer service and support throughout the buying process.

In order to create an effective sales strategy for each type of customer, it's essential to understand their unique needs and preferences and to tailor the sales approach accordingly. By focusing on providing customized solutions, excellent service, and building solid relationships with key customers, building materials companies can increase their sales and build a loyal customer base.