Do you have any evidence that they have poor workmanship or are you just relying on your ignorance?
Exactly. So many people ignorant of what the Chinese are capable of don't think the Chinese engineers are as good at simple carbon fiber bike moulding as western engineers. The truth is the companies in Taipei , Taiwan, are also made up of Chinese people just like mainland China, and those Taiwan companies are now contracting mainland China to make carbon frames for the biggest names in mountain bike brands. Logically, I can't understand why people think that way, since China has 1.36 BILLIon people and that means a lot of engineers trained in Chinese universities. Anyone know where the forerunner to the modern day computer comes from? That's right, China. Laying up a frame from carbon fiber isn't really rocket science, however. The main difference between a $4000 western frame and a $700 chinese frame is that the $4000 was developed to shave off more weight by layering less in the frame areas of less stress and downsizing the diameter of the frame in certain areas. for the savings of between 300 and 500 grams in most cases. That's about a half pound less you are payng thousands of dollars for.
I just bought a wheelset from a Chinese online brand that is only 1233 grams and utilizes using graphene in the resin that is used to glue the layers of carbon fibertogether. This process makes the layering stronger and therefor lesslayers are neded. My 1233gram wheels have ben working perfectly thru the ast 8 minths ans so far three xc mountai nbike races they've been used in. I weigh 65 kilos so Im not testing them tothe limit, nor am I takingthem over huge jumps butthey have been jumped a few times and over smaller jumps on xc courses.
I raced a hardtail fomr China while living in north Thailand for 5 years, and it work flawlessly and I as second in my age group and first in my age group in the northern region. That was about (if I remember correctly) 46 mountain bike races in 5 years time and about 300 km per week of training time on the bike. ITs still going, back sitting idle in Colorado forthe time being. It was thrashed and crashed numerous times and still didnt crack or fail in any way. Enough said. Keep drinking the Koolaid and belive what you want. you can lead a horse to water, but you can't make it drink.
