Hangzhou Sunfun Chain Co., Ltd

Hangzhou Sunfun Chain Co., Ltd. has been in business since 1991, giving them decades of experience in manufacturing bicycle chains — a key component for many global cycling brands. Being based in China provides strong access to manufacturing capacity and cost efficiency. However, none of their key verification details — including work email, phone, or business documents — have been confirmed. This lack of verification raises concerns about legitimacy and responsiveness, which could delay or prevent buyers from placing large orders. Buyers should request additional proof, such as a business license or official contact confirmation, before engaging. While the company's long history is a strength, it's not enough without verified credentials to build trust in international trade.