1. Create a Website: Build a professional website that showcases your A-CLASS BRAND DOOR CLOSER D71H products. Include high-quality images, detailed product descriptions, pricing, and contact information. You can hire a web developer or use website builders like WordPress, Shopify, or Wix for a DIY approach.

2. Optimize for SEO: Ensure your website is search engine optimized (SEO). This involves using relevant keywords in your product descriptions and meta tags, improving site speed, and creating valuable content related to door closers and related products.

3. Online Marketplaces: Consider listing your products on popular online marketplaces like Amazon, eBay, or Etsy. These platforms have a vast user base and can help you reach a broader audience.

4. Social Media: Create and maintain active social media profiles on platforms like Facebook, Instagram, Twitter, and LinkedIn. Share posts, images, and videos showcasing your products, and engage with your audience regularly.

5. Email Marketing: Build an email list of potential customers and send out regular newsletters with product updates, promotions, and relevant content. Use email marketing software like Mailchimp or Constant Contact to manage your campaigns.

6. Content Marketing: Create valuable and informative content related to door closers, installation guides, maintenance tips, and industry news on your website's blog. This can help establish your brand as an authority in the field.

7. Paid Advertising: Utilize online advertising platforms like Google Ads and Facebook Ads to target potential customers with ads showcasing your A-CLASS BRAND DOOR CLOSER D71H. Set a budget and monitor the performance of your ad campaigns.

8. Online Reviews and Testimonials: Encourage satisfied customers to leave reviews and testimonials on your website and other relevant platforms. Positive reviews can build trust with potential buyers.

9. Networking: Attend industry-related events, webinars, and forums to connect with potential customers and other businesses in the same niche. Building a strong network can lead to valuable partnerships and referrals.

10. Customer Support: Provide excellent customer support to address inquiries, resolve issues, and ensure customer satisfaction. Happy customers are more likely to recommend your products to others.

11. Measure and Analyze: Use tools like Google Analytics to track website traffic, user behavior, and conversion rates. This data will help you make informed decisions and optimize your online marketing efforts.

12. Shipping and Fulfillment: Ensure efficient and reliable shipping and fulfillment processes to deliver your products to customers promptly and in good condition.

Remember that building an online presence and reaching customers on the network takes time and effort. Be patient and consistent in your marketing efforts, and continuously adapt your strategies based on performance data and customer feedback.