 Zhejiang hay Automatic Control Technology Co., Ltd. is a national "high-tech enterprise", "Shou contract credit unit", "excellent innovative enterprise", through the TSO90001 quality system certificat |
 The company began in 1998 and is committed to the R & D, design, production, sales and service of building automation system and HVAC automation system. The company has established extensive coope |
 The company is committed to the R & D, design, production, sales and service of building automation system and HVAC automation system. The company has established extensive cooperative relations w |
 Electric two-way ball valve is most widely used in the end of central air conditioning of water system. The temperature controller of the central air conditioner controls whether the electric ball val |
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