According to the requirement of SAMR Notice No.151,2012, the safety quality of pressure vessels shall meet the essential safety requirements stipulated in the
applicable pressure vessel safety technical supervision regulations. For stationary pressure vessels and transportable pressure vessels, when Chinese standards cannot be adopted for their
construction, the manufacture license holders can adopt mature and widely used international standards for design and construction, and at the same time they shall submit the Special Equipment
Licensing Office of SAMR (hereinafter referred to as SELO) the Conformity Declaration by which the manufacturer declares its product quality is in conformance with the essential safety
requirements of Chinese safety technical codes (hereinafter referred to as “Conformity Declaration”) as well as the Comparison Table for pressure vessel products and the essential safety
requirements of the supervision regulations on safety technology for pressure vessels (hereinafter referred to as “Comparison Table”). For the same type of products with the same design
parameters, the Conformity Declaration and the Comparison Table should be submitted just once. After receiving the written files, within five working days, SELO informs the license holder of the
assigned serial number for its Conformity Declaration and publishes this serial number on SELO’s website. The manufacturer shall include the published serial number, the Conformity Declaration
and the Contrast Table in the product delivery files.