Fine Salt or common salt or sodium chloride.
The simple salt are the primary ingredient for Chinese cooking
recipes, in fact all types of cooking. Most recipes cannot do
without salt. Even salt is not one of the ingredient, but the
soya sauce contain salt!
In fact salts comes in lots of form in the market, like sea
salt, rock salt, less sodium salt (healthy choice), and table
salt and properly more...
Cooking salt come in two form fine and coarse. The fine are
used for regular cooking, like in stir-fried, braise, seasoning,
mixed with other ingredients. The coarse salt are used for pickle,
preserved meat, vegetables and fruits. This process uses large
quantities of coarse salt.
A good example are making Chinese ham, salted fishes, and salted
vegetables.
I don't see any exipred date on the box, Used until finish.