The isolators for weighing, packing and feeding API are used for powder weighing, distribution, packing and feeding, whose sealing and negative pressure conditions can protect operators and environment from being polluted by products. Three-dimensional material weighing and feeding system is formulated after materials are weighed for many times and fed into tanks through packing/feeding valve system. How to reflect man-machine engineering optimization when operators conduct aerial work. The logistic including weighing, packing and cleaning is conducted in isolator system which will greatly affect the integrity of equipment. Our most concerned issues will be how to avoid human contact and cross contamination and how to optimize process to ensure enclosed effect, online cleaning, packing butterfly valve system and material transfer tank (bag) in isolators. Protection Type: Protect both operators and environment.