One. Iosis to study the application of theory to improve the performance of the machine does not automatically sweep garbage 2. For design and construction of waste is not automatic sweeping theory Iosis .
1. to study the application of theories, Xin Yu in improving the performance of a non-automatic waste swept 2. To design and build a theory with no waste to feed yusit .
1. to study the application of the theory ยูซิส improve the efficiency and productivity of the sweeper is not a Junk auto 2. To design and build the sweeper is not a Junk auto ยูซิส theory.