If the customer wanted special anti-static or flame proof properties, they should have specified CARPET that had them, not cleaning services.
"...if and as required by law" is a meaningless phrase, with the exception that it makes you liable for doing the research to find out whether it is required, and adding you to the list of those liable "if and as" something goes wrong somewhere, so they'll have another company to add to the lawsuit.
Get a clarification from the building manager regarding both statements. There may be no law above what all carpet has to meet regarding the flammability of the carpet, and there may be no tenant that requires an extra anti-static application. I wouldn't agree to take on ANY liabilities beyond your normal services, and would draw a line through any questionable wording before signing any contracts.