(19)

(11)

EP 4 199 725 A1

(12)

(43) Date of publication: 28.06.2023 Bulletin 2023/26 (21) Application number: 21857648.6 (22) Date of filing: 17.08.2021

(51) International Patent Classification (IPC):  A01N 59/00(2006.01) A01N 65/00(2009.01) A01P 1/00(2006.01) (52) Cooperative Patent Classification (CPC): A01P 1/00; A01N 65/00; A01N 59/00; A01N 33/12   C-Sets: A01N 59/00, A01N 33/12, A01N 37/04, A01N 37/36, A01N 65/00; A01N 33/12, A01N 37/04, A01N 37/36, A01N 65/00; A01N 65/00, A01N 37/04, A01N 37/36; (86) International application number: PCT/CN2021/112891 (87) International publication number: WO 2022/037554 (24.02.2022 Gazette 2022/08)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 20.08.2020 US 202063068364 P (71) Applicant: Sundial Technology Development Limited Pak Shek Kok, N.T. (HK)	(72) Inventors: TSUI, Kwong Hoi Pak Shek Kok, N.T. (HK) YEUNG, Lam Lung Pak Shek Kok, N.T. (HK) (74) Representative: Cabinet Chaillot  16/20, avenue de l'Agent Sarre B.P. 74 92703 Colombes Cedex 92703 Colombes Cedex (FR)