If no contract agreement is referred to in the annex tiles necessary for the others, you can only ask the developer subsidies tiles, but can not refuse to become Shoufang reasons.

• 合同附件提到瓷砖如果没有约定是交房的必要条件，你只能要求发展商补贴瓷砖，但成为不了拒绝收房的理由。