欧美xxxxx高潮喷水麻豆-欧美xxxxx精-欧美xxxx黑人又粗又长精品-欧美xxxx色视频在线观看-欧美xxxx性bbbbb喷水-欧美xxxx做受

The quality of polyurethane foaming machine is mainly affected by the following aspects:

1. Heating temperature: the temperature of the polyurethane foaming machine is generally affected by the heater and pipeline of the polyurethane foaming machine. A good device is one with higher heating efficiency and better pipeline insulation performance.

2. Mixing evenness: the material of polyurethane foaming machine is mixed through pressure, and the pressure directly influences the mixing evenness. Mixing with high pressure is more even.

3. Heating efficiency: generally large heating power is selected to meet the needs of daily work.

4. Pressure influence: the pressure of polyurethane foaming machine is even, which will not cause wear and tear and greatly prolong the service life.