English to Chinese Tech/Engineering IT (Information Technology) contract

At present, the biggest risk is Iran's on‐going project(s)…At the end of 2010, our
company signed a four‐party project contract with Iran customer(s), adopting semi
cut‐off method, i.e., our company provides our self‐manufactured equipment to
the customer(s) and our company's cooperating company provides sensitive U.S.
procured items to the customer(s)”
请问这种方法在合同中指啥？