Technical documents, certifications, and company credentials for download.
Note on Company Name: Some certifications and technical documents were issued under our former company name (Shandong Longgang Silicon Technology Co., Ltd.). Following the corporate name update, Shandong Zhongzhi Chemical Technology Co., Ltd. continues operating as the same legal entity with unchanged manufacturing facilities, production team, and product portfolio.
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Certificates
ISO certifications and REACH registration under former company name.
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ISO9001:2015 Certificate
Issued under former company name (Chinese & English)
