Heel patch production is a niche but growing segment in the rubber footwear supply chain, often used in mass-market shoes to improve comfort and durability. Anshan Jinshancheng Rubber Product Company has been operating since 1990, which suggests long-term experience in manufacturing and possibly stable supply chains. The lack of verification on documents, work email, phone number, and account email raises concerns about the company's legitimacy and ability to handle large or complex orders. Buyers should request additional proof, such as a business license or product samples, before committing to any purchase. Being based in China provides access to a large manufacturing base, but without verified contact details, it's harder to confirm real-time responsiveness or order tracking. Without verified communication channels, coordination and dispute resolution may be delayed or difficult.