sponsorial

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

住宅建筑缩小了人类生活空间，使抵御风寒、证人身安全有了可靠障。

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.

出于环要，数牌非常注重采用超低铅含量铜材制造，证人体健康。