BRIEF-Kolen receives patent
* Says it received China patent on March 24, for photographic lens optical system
Dec 8 Meihua Holdings Group Co Ltd
* Says unit signs framework agreement to invest about 400 million yuan ($58.15 million) in biotech firm
Source text in Chinese: bit.ly/2h8FON9
Further company coverage: ($1 = 6.8785 Chinese yuan renminbi) (Reporting by Hong Kong newsroom)
WASHINGTON, March 23 U.S. President Donald Trump warned House Republican lawmakers that he will leave Obamacare in place and move on to tax reform if they do not get behind new healthcare legislation and support it in a vote on Friday.