EDGAR Filing Documents for 0001683168-22-002719

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:

SEC Accession No. 0001683168-22-002719

Filing Date

2022-04-15

Accepted

2022-04-15 12:31:53

Documents

Period of Report

2021-12-31

Document Format Files

Seq	Description	Document	Type	Size
1	FORM 10-K	luduson_i10k-123121.htm iXBRL	10-K	1094843
2	RENTAL AGREEMENT	luduson_ex1002.htm	EX-10.2	16193
3	CERTIFICATION	luduson_ex3101.htm	EX-31.1	8869
4	CERTIFICATION	luduson_ex3102.htm	EX-31.2	8778
5	CERTIFICATION	luduson_ex3201.htm	EX-32.1	4150
6	CERTIFICATION	luduson_ex3202.htm	EX-32.2	3494
12	GRAPHIC	image_002.jpg	GRAPHIC	11528
13	GRAPHIC	image_003.jpg	GRAPHIC	27941
14	GRAPHIC	image_004.jpg	GRAPHIC	76588
15	GRAPHIC	image_005.jpg	GRAPHIC	33673
16	GRAPHIC	image_006.jpg	GRAPHIC	59734
17	GRAPHIC	image_007.jpg	GRAPHIC	53191
18	GRAPHIC	image_008.jpg	GRAPHIC	55498
19	GRAPHIC	image_009.jpg	GRAPHIC	13628
20	GRAPHIC	image_010.jpg	GRAPHIC	57554
21	GRAPHIC	image_011.jpg	GRAPHIC	50425
22	GRAPHIC	image_012.jpg	GRAPHIC	4228
23	GRAPHIC	image_018.jpg	GRAPHIC	61189
24	GRAPHIC	image_019.jpg	GRAPHIC	51938
25	GRAPHIC	image_020.jpg	GRAPHIC	38348
26	GRAPHIC	image_021.jpg	GRAPHIC	26804
27	GRAPHIC	image_022.jpg	GRAPHIC	6684
	Complete submission text file	0001683168-22-002719.txt		5597006

Data Files

Seq	Description	Document	Type	Size
7	XBRL SCHEMA FILE	ldsn-20211231.xsd	EX-101.SCH	31848
8	XBRL CALCULATION FILE	ldsn-20211231_cal.xml	EX-101.CAL	44898
9	XBRL DEFINITION FILE	ldsn-20211231_def.xml	EX-101.DEF	88649
10	XBRL LABEL FILE	ldsn-20211231_lab.xml	EX-101.LAB	230687
11	XBRL PRESENTATION FILE	ldsn-20211231_pre.xml	EX-101.PRE	191244
78	EXTRACTED XBRL INSTANCE DOCUMENT	luduson_i10k-123121_htm.xml	XML	469644

Mailing Address 17/F, 80 GLOUCESTER ROAD WANCHAI K3 00000

Business Address 17/F, 80 GLOUCESTER ROAD WANCHAI K3 00000 852-2818-7199