＿The major pl aye r s of ma inl and China ' s epi - wafer and cr ystalline grain industr y are San An Optoelectronics, HC SemiTek, Tongfang, Elec- Tech International, Aucksun, Xiamen Changelight and Hangzhou Silan Azure Technolog y. The LED product revenue of the leading manufacturer San An Optoelectronics (including epi-wafer and LED lighting businesses which took up market shares of 74% and 19% respectively in 2015) grew as high as 18% in the first half of 2016; however, the net profit increased only slightly by 2%, showing a big gap between the revenue and net profit and a highly competitive market for the industry in the first half of the year.