Ningbo Haixin Hardware Co., Ltd-ek API-20E (BSL 1, BSL 2) lortu du American Petroleum Institute-ren 2022ko apirilaren 25ean. Eta konpainiak CNAS17025 laborategiko auditoretza gainditu du. 2022ko abendua baino lehen CNAS17025 ziurtagiria lortzea espero dugu.
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