2. Understand the local waterproof material market. You can compare the price of waterproof materials with your customers and let them agree with your products.
3. Get in touch with some influential interpersonal relationships in the local construction industry, so as to promote your waterproof materials to the construction industry owners and building materials suppliers. 4. Visit your customers regularly to learn about their use of waterproof materials, set an example for them, and let more people know that your waterproof materials are cheap and good.