do choi tinh duc duong vat to dai may lam to chuym gai dam dang may tap duong vat tu dong deo bao cao su quan h to tang kich thuoc cau nho lam to duong vat bao cao su bi bao bi lam to cu may tap duong vat deo bao cao su may tap tang kich co cau nho duong vat dai lam to chuym tang kich co cau nho bao bi choi gai khung cach lam to cu nhanh ho tro sinh ly bu chich dai bao tang kich co duong vat may tap cau nho bao ccao su don den do choi thu dam lam to cau nho bao don den co bi bao don den bao tang kich co cau nho bao cao su