Ace people know very well: Calculate oneself to make others was not taken an examination of on, oneself also will surely not assure to be taken an examination of on.

高手们深知：就算自己使别人没有考上，自己也未必能保证考得上。

Sell medium :At any time hear the customer's suggestion , and proceed the design produce , and let the customer get the oneself the product , assure that need the quantity.

售中：随时听取客户的建议，进行设计生产，让客户得到自己需要的产品，保证质量。

Sell medium : At any time hear the customer's suggestion , and proceed the design produce , and let the customer get the oneself the product , assure that need the quantity.

售前： 提供产品的详细资料，根据用户的技术要求，研制、开发生产，让顾客满意。