高手帮忙翻译三句话，术语已经给出，主要中文意思比较委婉

1) As said, our previous company to go through intermediate goods, but a formal partnership with you is the first time, all we want to take 30% deposit +70% letter of credit (30% T / T + 79% L / C) payment method, we believe that this method of payment is the position of standing on both sides to consider, and if you agree, for us to carry out future cooperation opportunities.
2) Let us regret that the 10''of the spiral wax (spiral candle) in our country's standard of weight is only 39g, but the 10''of the bar wax (pole candle) weighing up to 53g, you can be spiral candle wax to replace it with a rod? That case, the unit price of 10''candle needs change. We are sorry for this situation.
3) Now we have 10''documents and candle accessories to pass through your pictures, be reference

1. just as you mentioned, we sent our goods to you through middleman before for servel times, but it is our first time to cooperate with each other directly. we would like to make the payment as 30% TT deposit +70% LC which is based on mutual interests.if you agree,it will help us for future cooperation.
2. sorry to tell that, the standard weight for 10''spiral candle is only 39g in our country, but the weight of 10'' pole candle can reach to 53g. is it possible to replace spiral candle with pole candle?
if yes, the unit price for 10'' candle needs to be modified. we are sorry for it.
3. here attached the documents and pic of 10'' candle for your reference. kindly pls check.

3)Attached please check the data to open L/C , 10'' spiral

candle and 10''pole candle.

We are look forward your news,sir.

Thanks and best regards!