1. the contract must answer Yes b been enforced. Although it is not written, even writing to say oral CISG was still valid, however, may require additional evidence or witness prove that if a dispute occurs.
1 b Yes, the contract must be enforced. Although it is not in writing. Despite oral CISG was still valid as well. However, May require additional evidence or witnesses dispute.
1 B answer yes contract must be enforced. Although it is not the writing, even speaking oral CISG still มีผลบังคับใช้ได้ as well, however, may have proven evidence. Or witnesses.