6、交易磋商、合同签订 指示性价格 price indication 速复 reply immediately 参考价 reference price 习惯做法 usual practice 交易磋商 business negotiation 不受约束 without engagement 业务洽谈 business discussion 限**复 subject to reply ** 限* *复到 subject to reply reaching here ** 有效期限 time of validity 有效至**: valid till ** 购货合同 purchase contract 销售合同 sales contract 购货确认书 purchase confirmation 销售确认书 sales confirmation 一般交易条件 general terms and conditions 以未售出为准 subject to prior sale 需经卖方确认 subject to seller’s confirmation 需经我方最后确认 subject to our final confirmation