Process:

        from animal bone, processed by boil, enzymolysis, filtration, concentratoin and drying.

Feature:

        relatively slow released nutrients

Application:

        Xanthan, bacillus

Representative:

        1. Xanthan production

        2. Bacillus production

Feature of customers:

        none

Demand of customers:

        1. Sensitive to the price

        2. Not strictly care about the quality