China Rubber Coupling

Rubber Products was established in the year 1982. We are a leading Manufacturer, Supplier of Gear Rubber Couplings, HRC Rubber Couplings, NM Rubber Couplings, Spider Rubber Couplings, etc. Our team of expert and committed technicians and engineers are fully equipped...

China Automatic Greenhouse Vent

Instantly opens and closes the roof vent/window when temperature alterations. The opener has a metallic cylinder containing a mineral which expands when heated. This pushes a piston that opens the vent. As the temperature cools, the mineral shrinks and a spring closes...