Option 1

Schedule a direct meeting with the client to explain the long-term risks associated with low-quality materials and the legal/safety implications of bypassing inspections, suggesting alternative cost-saving measures.

Option 2

Firmly refuse to proceed with any work that compromises safety or quality, stating your professional obligation, and inform the client you will terminate the contract if they insist on these dangerous compromises.

Option 3

Proceed with the project using the client's requested materials but discreetly try to incorporate some essential safety features or slightly higher quality materials without their explicit knowledge, hoping they won't notice.