The space that residential building narrowed the mankind lives, make resist safety of chill, sponsorial body had reliable safeguard.

住宅建筑缩小了类生活空间，使抵御风寒、身安全有了靠障。

Stem from the need of environmental protection, special attention introduces a few high-grade brand the cupreous ability that exceeds small lead content is made, sponsorial system is healthy.

出于需要，少数高档品牌非常注重采用超低铅含量铜材制造，体健康。