YXT-BB20-50S-03 YXT-BB20-60P-00 YXT-BB20-60S-00 YXT-BB20-70P-00 YXT-BB20-70S-00 YXT-BB20-80P-00 YXT-BB20-80S-00 YXT-BB20S-10P-00 YXT-BB20S-10S-00 YXT-BB20S-20P-00