Which one is better- Shanghai Dongfeng Pump Valve Factory - 上海花千坊_上海龙凤花坛_夜上海最新论坛

Which one is better?

Which one is better?

Pneumatic ball valves are divided into:
1. Round pneumatic ball valve;
2. Cylindrical pneumatic ball valve;
3. Square pneumatic ball valve;
4. Conical pneumatic ball valve;
5. Egg shaped pneumatic ball valve;
6. Hollow cylindrical pneumatic ball valve.

Pneumatic butterfly valve

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