Inquiry (采购产品): Concrete Additives To Whom It May Concern: I am in need of a concrete additive that will effectively waterproof a second story concrete slab. This is a residential construction application. I need this additive (or chemical) to be available in the country of Sri Lanka. Any assistance you could offer in this request would be greatly appreciated. Best regards, Mark Nagle Project Manager CHF International Sri Lanka email: markenagle@yahoo.com **** Hidden Message ***** mark nagle na LKA Company: chf international E-mail: markenagle@yahoo.com **** Hidden Message ***** markenagle@yahoo.com