I use leftover bits of wrapping paper to pack small plastic spoons, a brand-new Crayola or matchbox car or even, a small Ziploc filled with raisins and chopped almonds.

In this paper, the causes of size migration and its effects on chopped strand MATS are analyzed from aspects of raw material selection, fiber drawing process and fiber drying process.

This paper put forward the questions of original control system at electric locomotive, and discuss the principle a. nd the advantage about the control technology of direct current -chopped wave.