Generally, the contact number of door and window manufacturers can be found on its official website. Currently, there is no door and window industry website that can collect all the phone numbers of all manufacturers.
Now I list some famous doors and windows manufacturers as follows:
Foshan Alps doors and windows manufacturer Contact Info: 4000999770
Feiyu doors and windows manufacturer's phone number is 400-9955-919
Kangying National Service Hotline: 13392786330
Yihe doors and windows national franchise hotline: 400-830-8889 mobile phone: 18038687700 Fax: 0757-85592744
Royal doors and windows(Guangdong huangpai custom home Group Co., Ltd.), the hotline for manufacturers to join: 4008300800
