Unverified88% confidenceDecision RuleTime unknown
PVC硬管（冷弯管）用于墙面和地面暗埋主干，波纹软管仅用于顶棚吊顶或短距离转角，不建议全屋用波纹管代替硬管，波纹管抗压差易被踩瘪导致抽线卡死
1
Sources
88%
Confidence
Long-term
Relevance
-
First Seen
Sources
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