如何选择他们自己的通风管道产品，以及他们如何选择正规厂家?
How do they choose their own ventilation duct products and how do they choose legitimate manufacturers?
一、我们尽可能选择在市场上面做的时间比较长的通风管道厂家
1、 We try to choose ventilation duct manufacturers that have been working in the market for a relatively long time as much as possible
1、 因为这些厂家由于经营时间长而具有丰富的施工经验。此外，老厂家通常注重质量，更注重售后服务。只有把客户在市场上才会长期发展下去。有的新客户问我：“为什么你们厂的订单那么多？”因为我们始终本着“做事先做人”的态度去对待每一位客户，从来不会以薄充厚、以次充好，在本厂下单，保证产品质量，厂家直销，无多余中间环节费用，让利给客户！
1. Because these manufacturers have rich construction experience due to their long operating hours. In addition, old manufacturers usually focus on quality and more on after-sales service. Only by placing customers in the market can we sustain long-term development. Some new customers asked me, "Why are there so many orders in your factory?" Because we always treat every customer with an attitude of "being a person in advance". We never place orders in our factory to ensure product quality, direct sales from the manufacturer, no extra intermediate costs, and give away profits to customers!
二、选择适合自己的通风管道产品。
2、 Choose the ventilation duct product that suits you.
1、 共板法兰风管制作速度快，优点是节省材料，减少工程投资；降低能耗，节省运行费用，颇受施工企业欢迎。适用于新风系统，空调系统等中低型线  流水槽模具 景观石 检查井钢模具 保定通风管道 隔离墩模具 保定保洁公司压系统。
1. The production speed of the common plate flange air duct is fast, with the advantage of saving materials and reducing engineering investment; Reducing energy consumption and saving operating costs is popular among construction enterprises. Suitable for medium and low pressure systems such as fresh air systems and air conditioning systems.
2、 角钢法兰风管使用范围也非常广泛，结实耐用，但加工和安装工序复杂。适用于人防工程，消防排烟系统等中高压通风系统。
2. The use range of angle steel flange air ducts is also very wide, sturdy and durable, but the processing and installation processes are complex. Suitable for medium and high pressure ventilation systems such as civil air defense engineering and fire exhaust systems.