1. Improve the cathode emission materials and structure, so the electronic emission capability enhanced. At the same time , increase the area of anode metal plate to improve power of anode dissipation
2. Strictly control the size error of filament, anode and various key parts, and make sure that the product has good consistency.
3. Products burn-in under high voltage 600 v (burn-in time 2-3 times of ordinary products), long hour burn-in to allow less impurity and less intrinsic baseline noise, and more stable performance over long lapse of time.
4. Use gold-plated tube needle and upgrade to a stronger metal base, while improving the quality of the tube seat, the whole tube is more elegant and elegant.
5. The products are screened and tested with imported test system, and the Ia and Gm are used to match the products to ensure the stable and reliable product quality.