In the production of samples, we found that the dimension A1 shown in drawing can be guaranteed by machining only. Once after processing, such as: to oil, phosphate, pickling, the dimension change.
中文需要重新组织语言，改为“在制作样品的过程中，我们发现图中所示尺寸A1，在仅进行机械加工的情况下，完全可以保证，可一旦在此之后进行深加工，如：去油，磷化，酸洗之后，该尺寸会发生变化。
We have our technical, who is able to design the products or packing according to the drawing or samples of customers.
我们有自己的技术部，可以根据客户的要求设计或者包装样品。
Samples drawing by the sampling techniques of Permanent Random Numbers (PRNs) have good characteristic of sample coordination.
采用永久随机数法抽样技术抽到的样本具有很好地样本兼容的性质。
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