As I know, Chinese needs ML (ATTN: Manufacture License here, not Make Love, lol) for vessel. The following mail was the information a gentleman send me years ago when our company faced the same issue. Hopefully, it is useful for you.
Dear Mr. XXXX
The main procedure for obtaining the Chinese Manufacture License for pressure vessels is as follow:
1. Application documents delivery and accepted Manufacturer shall submit us the completed and correct application documents according to the “List of Application Documents ” .
(download at http://www.cnisn.com.cn/IRC/EIRC/special1_selo.html
2. Manufacturer survey
Once the application material accepted and approved by us, the manufacture survey to the facility site will be performed by the Chinese inspection organ authorized by our government.
(If the products belong to the gas cylinder, safety valve, rupture discs, gas cylinder valve, accumulator, and the corresponding type test never did in China previously, the test have to be performed in China prior to the manufacturer survey).
3. Audit report approval and license issue
After the positive audit report completed by the inspection organ and the final signature approved by our competent authority, we will issue the license timely.
In sum, the whole procedure for obtaining the Chinese manufacture license will take about 8 through 10 month and the total cost including the audit fee ,travel cost, etc. will be about 25,000US$.
Due to too many activities involved in the whole process of licensing , in order to ensure you may obtain our license quickly and smoothly, if you need the assistance under the “Consulting Service”, such as prepare the correct application documents , guide to fill the application form, etc. we may recommend you the reliable consultant company.
Special Equipment Licensing Office of AQSIQ
Address: Room B 208 ,2 Building ,Xiyuan ,Hepingjie,Chaoyang District,Beijing,China 100013
Tel: +86 10 59068662 Fax: +86 10 59068666