our engineer once works in printing and dyeing factory for 30 years, very familiar to reactive printing and a variety of printing auxiliaries, especially on the performance of sodium alginate. If, should, there are some trouble during using our product, we would like to solve any problems as soon as possible. 2. Quality control we are a big group enterprise, so we have strict quality controlling system. Every batch raw material, we will carry out strict examination, only qualified we will arrange producing sodium alginate. And every batch alginate we will take test for viscosity, flow ability, calcium content, etc. Poly woven bag with inner plastic bag,25kg net