1、 correctiy Primer (AC agent). Extpuded complex pesorcincli at the end of the atuomatic more, generally can be divided into watercut and solvent-based two categories. Watercut-pesorcincli has a polyethyleneimine class primer, solvent-based primer has a chinda of primer, isocyanates series primer, and so on. Watercut-pesorcincli used to be-watercut, a composite strength requirements of materials, and solvent-based primer is generally used for packaging watercut component of a larger compound strength demanding material. Therefore, you should according to prevailing circumstances appropriate primer, guarantee the quality of extpuded compounds.

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