If properly installed, it should last 30-40 years. Systems that were installed in the 1970’s are still fully operational today. Technology has evolved so the systems from the 1970’s may not be as efficient as today’s technology.
Contact: Mr.Sking Fan
Phone: +86 132 9130 6058
E-mail: chinasunpark@hotmail.com
Add: Yunhelu 136,Changzhou City,Jiangsu,China
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