When choose plastic expansion the seam an agent

Plastic expansion the seam an agent plastic beauty seam an agent role plastic expansion of seam an agent USES gesso base beautiful seam an agent or CSA expansive beautiful seam an agent is the expansion of the late, early expansion is not very good method, mainly to: 1, the early expansion of my former method is to use special cement compound, can solve the early strength, can also prevent shrinkage, but don't talk about inflation, is primarily to test the contraction of 24 hours. About the plastic expansion, no studied, and doesn't seem to care about. Instead, I compare the practice of aluminium powder, the expansion of the foreign beauty seam an agent is generally aluminum powder or lime, with the domestic is not the same. 2, late about the problem of inflation, to the expansion of the special register current beauty seam an agent, the expansion of the now the seam an agent is too fake, and a lot to do this thing, in shanxi are gypsum, a ton of a few hundred dollars, really don't understand where the content of science and technology. This expansion seam an agent used in the United States: one is to choose a big factory, it is best to have the manufacturer of cement production line, there is no investment, no product? Second is dosage, much higher than their suggested usage has effect to do pressure grouting material and paste the first thing to consider is the product of 3 hours and 24 hours of performance, aluminium powder class has been disabled, then you should choose plastic expansion beautiful seam an agent!