[introduction] in various industrial fields, such as widely used mechanical seal seal device. However, there are many limitations in the practical application of the device. To design and produce exc..

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No protective facilities, pressure container. (1) repair should be put forward to site safety technical staff views and requirements, comply with the on-site operation safety management regulations, t..

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[introduction] "fixed pressure vessel safety technology supervision regulations" (hereinafter referred to as TSG 21-2016, “ new volume ”) will come into force on October 1, 2016. To do wit..

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First, the bidding time 1, the deadline for submission of bids: valid for at least 20 days 2, tender documents: 15 days before the deadline for submission of bid documents 3, surveying the scene: 1-2..

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