Tongyu Heavy Industry Co., Ltd.
Quality Assurance
Japanese Classification Society certificate
Release time:
2025-06-13
Author:
Source:
This certificate is a factory recognition certificate issued by the Japanese Classification Society (NK). The applicable scope of the certificate is: Steel ingots and forgings (including crank - arm forgings) made of carbon steel and low - alloy steel.
This certificate is a factory recognition certificate issued by the Japanese Classification Society (NK). The applicable scope of the certificate is: Steel ingots and forgings (including crank - arm forgings) made of carbon steel and low - alloy steel.
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