... our products have to pass four inspections.Firstly,pre-production material inspection;Secondly,online inspection;Thirdly,salesman casual inspection and the ... and office are in Shanghai.On one hand,most our material suppliers have cooperated with us for many years and they can ... cost,which make our products are much cheaper than other suppliers.5.Flexible Payment TermsPayment terms as 30% T/T,100 ...