I didn't know that Longse and Acesee and Cantonk is a one company.
I remember in 2012 I've got about 50 new chinese spammers to add to my mailbox filters. Like cantonk, acesee, wodsee, howelcctv, cctvhw, novosun, qihan, eonboom, generalvision.com.cnamovision, annivision, lenkeng, eglcctv, htwcctv, pailicctv, risvision.cn, ycxcctv
So there is a chance that a big part of them are Longse "brands".
To protect my mailboxes from these spammers I added about 20 message filters for Thunderbird. Now I have more than 100 filters.
I have published some filters on our facebook wall here in 2012.