New Arrival China Brass Air Vent Valve - PTFE Throttle ring – DONGYI Detail:
it can bear pressure when gas is compressed, it also can reduce gas into the packing components
Product detail pictures:


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we are able to provide good quality items, aggressive rate and best shopper assistance. Our destination is "You come here with difficulty and we provide you with a smile to take away" for New Arrival China Brass Air Vent Valve - PTFE Throttle ring – DONGYI, The product will supply to all over the world, such as: Iran , Armenia , Adelaide , Now, with the development of internet, and the trend of internationalization, we have decided to extend business to overseas market. With the propose of bringing more profits to oversea customers by providing directly abroad. So we have changed our mind, from home to abroad, hope to give our customers more profit, and looking forward to more chance to make business.

This is a very professional and honest Chinese supplier, from now on we fell in love with the Chinese manufacturing.
