Go to Truck & bus radial tyre direct from China (Mainland)
This is the manufacturer's web site. I see no inflation table. However, scroll to the bottom of the page and try contacting the supplier/distributor. The size and load range of the tire are both important for determining PSI for a given weight being carried. If the tire is DOT certified for sale in the USA gut feel says inflation tables for the same size tire and load range should be the same PSI. However, I'd make the attempt to contact the distributor and manufacturer.
They have over 3K tires to sell in the truck tire category. There is no search feature. I went through about 10 pages and did not find your size.
My Michelin tires are the same size as yours and are a load range "J"