RED LEAF LETTUCE. Very nutritious, and high in beta carotene. Better than 'iceberg' lettuce nutritionally.
I'm not sure what you mean by 'preservative mix' but, given the previous questions this is probably asking about food preservatives. There are many, some benign, some maybe not so benign. This link here is a good general summary.
SWISS CHARD is one of the world's most nutritious vegetables, but I must confess I have neither eaten it nor heard of it prior to your question.
Millet is a small grain often used as bird seed but nutritious for humans as well.
Squash comes from a rind... it is widely used here in the US as a tasty and nutritious vegetable.
Zucchini is a type of squash, 'summer squash', and is used in a similar fashion in cooking. It is quite nutritious though I personally do not like the taste.
Pine nuts are from certain pine trees. They are seeds of the tree. They are very nutritious, and, in fact, some Native American Indian tribes of the desert southwest based their entire lifestyle around getting and harvesting and trading the pine nut.
Mustard is a food flavoring made from the mustard seed. We use it a lot here in the US, it has the health benefits listed but is not, usually, considered a primary food item.
Sorbitol is a sugar-alcohol and is found both naturally occurring and can be manufactured. It is not as sweet as sugar, and the manufactured form is often used as a thickening agent in various food products.
A TURNIP is a root vegetable, it looks much like an onion but is much different in taste. It is often used as a nutritious addition to stews and soups in both America and Europe and throughout the world.
A STRING BEAN is also known as a GREEN BEAN and is widely consumed throughout the world and is rich in anti-oxidants. It is quite nutritious. 'String Bean' is a regional term for green been, referring to its thin, string-like appearance.
If you have more questions I am happy to continue in this conversation with the understanding that we reached above.
Thank you very much for your business.