项目描述
The services of a chemical processor are required. It is necessary to choose the ratio of substances when packing glue. It is necessary to package the adhesive on solvents in aerosol cylinders, to choose the ratio of the main substance (glue) with the solvent and propellant with gas. The number of adhesives is 4-5 types.
其他 / 杂项 现金, 电子货币