common problems
unit price
a.how long about the period of validity after unit price confirm.
reply:the normal unit price is valid for 10 to 15 days,but considering the long-term interests, we may be extended appropriately cooperation.the contract is valid for three months for increasing in cost of global oil price.
b.price
reply:the unit price concerns about the original material,there are many reasons affect the unit price,such as:quantity.printing colors,design print plate,material and packing method etc.