On July 29th, 2022, our company obtained the national utility model patent authorization for "A sodium sulfate recovery device for industrial sodium sulfate wastewater".
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Email:makall@silica-gel.com.cnTel:0532-877198180532-87719228 0532-87719687Add:NO. 28, Shuangyuan Road, Chengyang District, Qingdao City, Shandong Province, China