document against payment after 30 days 和30days D/P

document against payment after 30 days 和30days D/P D/P AT 30 DAYS AFTER SIGHT 和D/A AT 30 DAYS AFTER SIGHT有何区别,各 大哥大姐~D/P AT 30 DAYS AFTER SIGHT和D/A AT 30 DAYS AFTER SIGHT有何 Net 30-days payment D/A AT 30 DAYS AFTER SIGHT 比采用D/P AT 30 DAYS AFTER SIHGT 承担风 L/C 30days payment Document against Payment T/T payment 30 days after B/L date 和 T/T30天是一个意思吗? D/P at 90 days after sight 和D/A at 90 days after sight 有何区别, 付款条件：Payment is 30 days D/P 30 days after BL date,这个付款方式具体是什么意思? normal payment term is 30 days credit after receipt 什么意思?