First, touch: Silicone and fluoride silicone type of two types of protective agents are creamy, the acrylic acid type of protective agent has a strong sense of viscous, silicone-type protective agent than the acrylic acid type of protective agent has a slightly weak viscous feeling.

Second, burn: can distinguish the solvent type of protective agent (can or flammable) and complete water-based protective agent (non-flammable).

Third, said: 1L Curing agent for the unit weight, under normal circumstances, less than 1 kilograms of oil, is equal to or greater than 1 kg of water.

Four, smell: can distinguish solvent-based protective agent (smell) and complete water-based protective agent (odorless), from different odors can also distinguish oil-soluble solvent type curing agent and water-soluble solvent type curing agent.

Five, see: Curing Agent Liquid is milky-type protective agent, colorless for other curing agent, in addition, the curing agent into the glass and then injected into the water, and water layer for oily curing agent;