通风管道设备承包商 Ventilation duct installation contractors
国际管道和海洋承包商 IPLOCA
管道安装承包商 contractor, pipe fitting
管道和暖气承包商 plumbing and heating contractor
管道业承包商和监察员 Contractors and Supervisors, pipe fitting Trades
联系您的管道承包商，让其来进行检查，以确保安全得到保障。
Contact your plumbing contractor for a reinspection to assure continuing safety.
不要试图自己进行检查。请与您的管道承包商联系，让起来检查以确保使用安全。
DO not attempt to conduct an inspection on your own. Contact your plumbing contractor for a reinspection to assure continuing safety.
为确保设备安装正确性，本安全阀安装须由有资格证书的管道承包商或维修技术人员按照说明书及其他相应规定进行。
To ensure proper operation, this valve must be installed by a qualified service technician or licensed plumbing contractor in accordance with these instructions and local plumbing codes and standards.
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