Round Disc

material information

Working principle

The jumping disc is made from a special piece of metal, called bi-metal that moves when heated with your thumb. When it is warmed to about body temperature, you can “click it” into its loaded position and then carefully place it on a hard surface. When it cools down to room temperature, it suddenly snaps back into the old position, and simultaneously jumps high up in the air. It jumps several hundred times its own height.                                              

The jumping disc works on the same principle as a thermostat or a shunt-valve in your car. With such a thermostat or automatic valve, a special piece of metal, called bi-metal, moves when heat is applied or removed. Bi-metal is actually two pieces of thin metal fused together in the middle. When the temperature changes, the metals expand differently and bend into a curve in either direction.

-Sea Shipping: Usually it will take around 20-30 days to arrive most countries. You need to make custom clearance when goods arrive your side. It is the cheapest way of shipping. So if you are not in a hurry and have big quantity of goods, you can choose sea shipping.

 -Air Shipment: Usually it will take around 3-10 days to arrive most countries. You also need to make custom clearance when goods arrive your side. It is more expensive than sea shipping, but cheaper than by express.

 International Express: Such as DHL, Fedex, UPS, TNT, TOLL, DPEX, USPS and so on. You can choose Economy Service which is cheaper than normal service if the goods are not urgent. It is one kind of Door to Door service. Normally if the goods volume is not very big, you don’t need to make custom clearance in your side. The courier will send the goods to your door.

FAQ:

1.Does the package can avoid collision during the shipping process ?

 Yes, 1000pcs for example . We put 100pcs into a small carton box , each line will insert hard paper to avoid collision .10 small carton boxs into one big carton box . Then tie up with plastic strip .

2.What's your parment method ?

 We usually welcom T/T in advance . Some samples through paypal . And  L/C,  Western Union also can be used .

3.How to get some samples ?

ntact us and send drawing or sample , we can develop new product according to your drawing or sample .

2.we can sent you the similar product which in our stock .

Please pay attention : our sample not for free , and the express fee will take on your side .

4.How about the quality of your product ?

Our product has passed ISO9001 quality certify test . Each of our spring will test at lest four times . And we have thermostat room to ensure the spring be tested in the specific temperature . The final test will be casual inspection . We use fatigue machine to test the spring day and nigh .To ensure every casually picked spring can work more than 100,000times .

Welcome to consult us !!