Hangzhou Changming Battery Co., Ltd. was established in 1969 and is a manufacturing enterprise with a glorious 50-year history. Located in the Hengxi Industrial Park on the southern bank of the Fuchun River in Fuyang District, Hangzhou City, the company occupies a site area of 190,000 square meters. It is a large-scale, modern enterprise integrating R&D, manufacturing, and sales, specializing in the production of various types of dry batteries. With total assets exceeding 1 billion yuan and employing more than 1,800 staff members—among whom over 110 are specialized professionals in electrochemical technology—the company operates 56 production lines dedicated to different dry battery models. Together, these lines enable an annual output of up to 5 billion "Hua Hong" and "999" brand R20, R6, and R03 series dry batteries...