1. Authentic products of the factory.
The manufacturer's primary source, the quality of the goods is guaranteed.
2. About the size
G thread
3. About freight
Pro! All products of our company are not covered by mail. The price of our products is very low. Please pay attention to this explanation when purchasing the products. Some buyers speak any other sellers all bag mail, you how don't pack mail, because we don't add the postage to the price of the valve, the spell is not the price but the ratio of online shopping, our valves to ensure quality in the price of the same quality than other sellers. Please be assured that we will find the cheapest logistics company for you. Small products are sending Courier, large products express company is very expensive, because the Courier company is charge according to weight, all large products logistics companies, logistics, cheaper reached the county downtown unloading point, need to withdraw, since the freight paid to logistics company after you pick up the goods 
4. About customer service
If your consultation fails to reply in time, it may be that there was too much consultation or system failure.
5. About after sales
We will provide complete after - sale service, including 15 days return, genuine guarantee.
6. About shipment
We promise to deliver the goods in time!