| Integration firms | Supplier relationship | Local | Foreign | % share on raw material | Information exchange (phone, fax, mobile, e-mail) | Purchasing activities | % share | Information exchange (phone, fax, mobile, e-mail) | Purchasing activities |
| A | 65 | Phone, letter | Direct in purchase | 35 | Telephone, e-mail | International bidding | B | — | — | — | 25 | Telephone, e-mail | Partner supplier | C | 70 | Phone, letter | Own site | 30 | Fax, e-mail | International tender | D | 75 | Performa, phone, letter | Direct purchase | 25 | Phone, e-mail | Through agents | E | 95 | Phone, letter | Direct negotiation with supplier | 5 | E-mail, fax, telephone | Central office handles the purchasing functions | F | 95 | Phone, letter | Direct negotiation with supplier | 5 | E-mail, fax, telephone | Central office handles the purchasing functions | G | 95 | Phone, letter | Direct purchase | 5 | E-mail, fax, telephone | Online bidding | H | 95 | Phone, letter | Sister Company | 5 | E-mail, fax, telephone | International tender | I | 90 | Phone, letter | Direct purchase | 10 | E-mail, fax, telephone | International tender |
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