According to Flash market is now on the market last year were under the imbalance between supply and demand, the decline in value under considerable pressure, but under the manufacturers have cut production, prices are expected starting from the second quarter is expected to decline significantly convergence; eMMC Flash as a species, the price has also been affected, in reality we often see in the market, the price differences between different brands and eMMC eMMC no brand bigger, eMMC price difference in addition subject to market fluctuations but also by affected? 
eMMC controller and the NAND particles are encapsulated inside a package, in which there are several factors which influence the price eMMC, a first storage particles, the second is the packaging technology, the third test, the fourth controller is selected.
First, let's say for the first factors, eMMC storage granules choice. Particles are generally divided into primary storage sheet, white sheet, black sheet, the first to understand the difference between these types.
Original film: Flash particle passed the screening and fault detection of the original Fab, commonly known good die, and fab (e.g., Toshiba, Micron, Hynix, Samsung, Hong Wang Semiconductor) LOGO printed on the chip surface, and model parameters and other information.
White film: Refers to qualified experienced Flash particle filter fab but no hard disk manufacturers procurement screened by the original fault detection, himself. Simply put, it is defective, but there are still white piece of quality assurance, are usually second-tier hard disk manufacturers use.
Black piece: black films is not by any means the detection, which is the highest failure rate of waste film is commonly used in flash drives cottage.
From the above definition can be clearly distinguished, the price is the original sheet eMMC> white film> black sheet, are generally chosen brand eMMC original sheet, such as the eMMC ICMAX in particle-derived, in addition to direct procurement ICMAX wafer manufacturers to the upstream foreign products, but also through the regular procurement to packaging and testing plant for the entire wafer cutting packaging and testing, and marked ICMAX own Logo, ICMAX eMMC particles are good die, eMMC quality assurance.
EMMC followed by packaging and testing.
Chip packaging and testing technology, can be said that the core competitiveness of the domestic semiconductor companies, directly affect the yield and price eMMC, different brands have their own different way of packaging and testing. Hong Wang ICMAX semiconductor industry with well-known manufacturers reached a long-term cooperation, and their automated test machine, constantly optimize the testing program, can for different product applications, for the conduct of the test there, so to analyze specific issues, which can effective to control the chip yield, the failure rate control in three thousandths.
Finally, select the controller.
Select eMMC controller is nothing less than the industry's well-known that several impact, choose a good controller manufacturers to price and quality eMMC has a certain extent.
Several factors above point of view, cheap eMMC may choose to start on the issue has emerged, it is to be selected out of the vendors black pieces in wafer; also the situation again and again to the packaging and testing, product yield is not controlled. So choose a brand of eMMC or quality assurance, look for Wang Wang semiconductor ICMAX eMMC, yield 99.7% is the quality breakthrough trusted choice.