When purchasing SKD (Semi Knocked Down) kits, the Open Cell (Panel) is the most critical and expensive component; ensure it comes from Tier-1 manufacturers like BOE, LG, or Samsung to guarantee Grade A quality with zero bright dots. For the Mainboard (PCBA), verify the chipset solution (e.g., Realtek or MTK) and ensure it supports the local digital TV standards of your target market, such as DVB-T2, ISDB-T, or ATSC. Additionally, check the Backlight Unit (BLU) brightness levels (typically 250-350 nits) and the power supply stability to prevent burnout during voltage fluctuations.