we are the producer of alternative air pressure mattresses . we want some air valves for our production ,Would you send me a product sample before I place an order? and I do want to know more about d...
We are interested to buy all kinds of Gate valves, ball valves, air valves, butterfly valves, universal pipe couplings, pipe fittings, surface boxes, hydrants, swing check valves, repair clamps. Requ...
