8 Utility and 6 Design Patents
#129 in Zhejiang
#15,468 in China
#509,378 in the World
rank by utility patentsForward Citations = 26
Company Filing History:
Changzhou Huada Kejie Opto-electro Instrument Co., Ltd.
Hangzhou Ole-systems Co., Ltd.
Changzhou Huada Kejie Opto-electro Instruction Co. Ltd
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