Another aspect is that with the equipment where we worked for a competing product, Huawei was cheap because it cheated in electromagnetic compatibility requirem

Another aspect is that with the equipment where we worked for a competing product, Huawei was cheap because it cheated in electromagnetic compatibility requirements, while our products were strictly required to comply. I suppose the reason for more lax approach by customers to Huawei was simply the desire to bring it up as a new competitor and cut prices. Sure, the things worked well enough. They maybe caused interference in some other equipment, maybe not, but in any case it was not too bad, because the EMC requirements were quite tight for these products. (This was 15 years ago and I have no specific references, I just remember the frustration of our HW designers.)