Do the plastic pipes and non-metallic pipe joint trademarks and plastic pipes for rural well drilling belong to category 17 or category 19?

Deng Hongliang’s registered application number; 9786274 [Jiajiali 17 The registration application for using this trademark on "Plastic pipes, non-metallic pipe joints, non-metallic hoses" was rejected on the grounds that the trademark was registered No. 4158694 on similar goods by Hutchison Whampoa Enterprises Co., Ltd. [Jia Li ]The trademarks are similar. "Jiali" belongs to category 19, and the products are:

Non-metallic building materials; non-metallic rigid pipes for construction; asphalt; artificial asphalt; asphalt products for construction; non-metallic buildings; movable non-metallic Buildings; non-metallic monuments

The question is:

1.17 products: plastic pipes, non-metallic pipe joints, non-metallic hoses are in category 19, and the products are: non- Metal building materials; non-metal rigid pipes for construction; asphalt; artificial asphalt; asphalt products for construction; non-metal buildings; movable non-metal buildings; non-metal monuments. Is there a category distinction? Are they similar products? If they are similar products Why do we need to classify them separately?

2 If your Trademark Office wants me to register the 19 categories of "non-metallic building materials; non-metallic rigid pipes for construction; asphalt; artificial asphalt; asphalt products for construction; non-metallic buildings "Objects; movable non-metal buildings; non-metal monuments" can be used on Category 17 "Plastic pipes, non-metallic pipe joints, non-metallic hoses"

3. I produce Are plastic pipes for agricultural irrigation, non-metallic pipe joints, non-metallic hoses and plastic pipes for rural well drilling? Do they belong to category 17 or 19? I can’t find it in the category. I can only find category 17 but I can’t pass it. Which category should I register for? Urgent, urgent, urgent, is it Category 17 or Category 19?

4·For example, what type of hose does your unit use for watering flowers? What type of PE material water pipes are generally used in urban water supply pipe networks?