So, while the scope of application of electric control valve more and more widely, but in the chemical industry, pneumatic control valve or occupy an absolute advantage.
所以，虽然现在电动调节阀应用范围越来越广，但是在化工领域，气动调节阀还是占据著绝对的优势。
So, while the scope of application of electric control valve more and more widely, but in the chemical industry, pneumatic control valve or occupy an absolute advantage.
所以，虽然现在电动调节阀应用范围越来越广，但是在化工领域，气动调节阀还是占据著绝对的优势。
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