请帮忙翻译下一个句子成英文

A material will yellowing above 60°C，we suggest that mix A and B as a proportion of 2：1，trying to make finished goods if in the field and is the condition of molding of mass production．
If it doesn’t work，material returned．
不知道怎么回事，英文分开了。

Material A will turn yellow above 60℃, so Material B is suggested to be mixed round with A at the proportion of 2:1. Try if the color made is within the color-range, so as to reach the request of scale-manufacture. If it doesn’t work, try to make changes.
——不太明白“退料”是在讲什么…

A will turn yellow when temperature is over 60℃. Our recommendation is to homogeneously mix A with B at the proportion of 2:1. Then,to confirm the finished color is within the color range and meet the requirements of mass production. If not available, please return the materials.

A料在60度以上会变黄A material in more than 60 degrees will turn yellow,
建议与B料按2:1的比例混料均匀， with recommendations expected by B 2:1 ratio mixture evenly,
试试看成品色是否能做出在范围内