塑石假山的稳定性主要靠主结构来完成，但随着时间的推移，钢材在接触空气及水的过程中，容易发生腐蚀、生锈。
Plastic rockery stone stability is mainly rely on the main structure completed, but with the passage of time, steel in the process of contact with air and water, prone to corrosion and rust.
尺寸稳定，在成型过程中，塑件与模具接触的面要比离开模具部分的尺寸稳定性更好。
Four, the size is stable, in the molding process, the plastic part and the mold contact surface compared to leave the mold part the size stability to be better.
在阀门闸板运动的全过程中，密封面都对闸板提供恒定的引导，保持与闸板连续稳定的接触。
The face seals provide constant guiding throughout the valve stroke, maintaining continuous contact with the gate.
应用推荐