Hung-Yin Enterprise since we inception then we have target of specific group as the source to the production line – The Machine of Screw Straightening.

In the process of screws from production to sale, many industry will confusing that how to make screw be straight, no matter long and short, or no matter there is shape of head or not. Even through different machines to produce that we will help you to have straight products, when the customers get that should be the excellent products of straight.

Mr. Chang is the entrepreneur of Hung-Yin LTD. Before that he has been a mechanics of dies in industrialist. Then he decided to leave mechanics of dies into the field of screw straightening, because he has technology in the specialized field, and see the market of future.

The attitude of Mr. Chang always that "whatever you do, you do well", therefore when he beginning into the field of screw straightening and design an excellent machine in the transnational, now through application process of patented, we have the approved of Taiwan and China.

Horizontal competition is not real major cause of patent applications documents for we want to protect rights and interests of customers to use and proof our technical that is the real purpose. But hope the industry and users will respect for designers devote to the creation.

To implement the spirit of the Patent Law, on the market if real terms of the infringement, our company will sue by letter. And the claim's range is from the lowest to the highest for ten times. The consumer and the industry do not defy the law please.

Also welcome to report, once a case for report and claim is successful then we will offer the bonus. The bonus is after deducted the amount of the claim period and all overhead costs, then taken forty percent (40%) as a reward.

When Caller reports must be initiative to provide collected the documents and pictures of the infringement in the initial. If above is verified by our company, and use the information for established to protect the whistleblowers. PS: When into the judicial process, the informants shall be unconditionally matched to support that provide the documents.


ROC patent certificate
ROC patent certificate
PRC Patent Certificate
PRC Patent Certificate
Horizontal leveler patent
Horizontal leveler patent