no_key
no_value
form_key
form_value
serial_key
serial_value
date_key
date_value
subtotal_key
subtotal_value
tax_rate_key
tax_rate_value
tax_amount_key
tax_amount_value
tips_key
tips_value 
total_key
total_value
total_in_words_key
total_in_words_value
seller_company_name_key
seller_company_name_value
seller_address_key
seller_address_value
seller_tel_key
seller_tel_value 
seller_tax_code_key
seller_tax_code_value
buyer_company_name_key
buyer_company_name_value
buyer_personal_name_key
buyer_personal_name_value 
buyer_tax_code_key
buyer_tax_code_value
buyer_address_key
buyer_address_value
buyer_tel_key
buyer_tel_value
other