Metal elastic force ring inside piston rings can add initial elastic force of the non-metallic piston ring to get expectative seal effect.
在活塞环的内侧设置金属的弹力环增加非金属活塞环的预弹力，可到达预期的密封效果。
2
Spray Polyurea Elastic(SPUA) is new-fashioned technology of non-solvent and non-pollution adverse effect.
喷涂聚脲弹性体技术是一种新型无溶剂、无污染的绿色施工技术。
3
FUNCTION: Nature, gentle, non-greasy feel its better whitening effect, it can penetrate into the skin, skin conditioning, uniform colour, cause skin recovery more elastic skin, white, good.