Unfortunately, in my search for high-quality power transmission products, I found myself at QJZ, and the experience there was nothing short of a letdown. It was difficult to navigate their online store, and the ordering procedure was laborious. Because of the numerous technical issues I experienced, I was left feeling frustrated and perplexed. When my items were delivered, I discovered that they were of a poor quality, and that they did not fit the application as well as I had anticipated they would. When I tried to contact their customer service team, I was told there would be a lengthy wait time on the phone and that my emails would not be responded to. It was a lengthy and difficult procedure to return the products, and I was disappointed in their lack of empathy and understanding throughout the whole thing. My interactions with QJZ, despite their assertions that they are a provider of products of the highest possible quality in the field of electricity transmission, left much to be desired. Disappointing me with both their lack of attention to detail and their poor customer service, I would think twice before recommending them to anyone else. If you are going on a quest that is similar to mine, I recommend that you seek elsewhere for an adventure that will satisfy you more.