Taiwan LED chipmaker Epistar has recently developed agreements with Zhejiang Yonkon Group Co., Ltd. and NVC Lighting Technology Corp. in mainland China. Under the agreement, the company’s deal with Zhejiang Yonkon will primarily stress cooperation on the development of lighting LEDs, in addition to Yonkon’s pledge to buy Epistar chips. Details of its cooperation with NVC are being discussed. It estimated the two contracts would help boost the chipmaker’s market share in the mainland to 30% in 2012 from 20% in 2011. Epistar Chairman B...