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Since 1994, Wanli always insisted on management improvement. We have been certified by API SPEC Q1 & ISO9001:2008 quality management system and also obtained GB/T24001-ISO14001: 2004 Environmental Management System Certification. Otherwise, we got through the OHSAS 18001: 2007 Occupational Health and Safety Management System Certification. All of these help us to do better and better in production and management.

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