Qing NIU

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Jiangsu, CN

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Patents Applicationslast 30 patents

Information Patent Application
A LASER CONTROL CIRCUIT, CONTROL METHOD AND LASER INK LINE DEVICE W...
- Publication number 20170149208
- Publication date May 25, 2017
- Changzhou Huada Kejie Opto-Electro Instrument Co., Ltd
- Ou ZHANG
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
LASER MODULE CONTROL CIRCUIT
- Publication number 20150340839
- Publication date Nov 26, 2015
- CHANGZHOU HUADA KEJIE OPTO-ELECTRO INSTRUMENT CO., LTD.
- Ou Zhang
- H01 - BASIC ELECTRIC ELEMENTS