How about Ningbo Changzhen Copper Co., Ltd.?

This company is ok. Changzhen Copper is a comprehensive enterprise mainly engaged in the research and development of lead brass, lead-free brass and copper products. Founded in 1984, it is located in the beautiful port city of Ningbo, adjacent to the Hangzhou Bay Bridge and the Hangzhou-Ningbo expressway under construction, with annual sales exceeding 600 million yuan. | Changzhen Copper Co., Ltd. currently has more than 300 experienced and high-quality production managers and more than 30,000 square meters of modern workshops.