I know 4021 is not in the list of occupations. but i did found a spreadsheet (All PNP PR 2015 & 2016 in CIC Level) which include one candidate with 4021 who applied SINP and got ITA.
no. 86 - yongzhang - outland - 4021 - saskatchewan - Hongkong
Now can i apply?
no. 86 - yongzhang - outland - 4021 - saskatchewan - Hongkong

Now can i apply?