Do you have a friend from the boiler inspection office

At present, the toxicity of benzene is extremely dangerous according to Hg / t20660-2017, and medium dangerous according to Hg / t20660-2000. Whether the pressure vessel containing benzene can comply with Hg / t20660-2000 and whether the boiler inspection office can pass
2019-11-14 Reply
If it's not big enough, it's better to walk strictly. There are many test plates and hot spots
2019-11-14 08:55:01 Reply