HIC A AND HIC B CONNECTOR

search the forum. There are several cases where the part numbers and places to buy are listed for both connector shells and pins.

PDF Attached.
DigiKey.Com and Mouser.Com are both reliable sources.

some vendors only sell pins by the hundreds. Arrow electronics sells pins in any amount

Arrow, Digikey, and Mouser will all sell you a single pin for about 25 cents.
You will need at least 22 pins to populate the connectors.
So 30-50 pins with price breaks would be a reasonable number to purchase.
As these are low cost items, the shipping cost might double the price.
And as  the Original Poster is in China,  Shipping will be a major consideration.
Asian or European suppliers might be a better option for him.