Document:

Exhibit 10.7.4

 

PROCESSING PLANT LEASE AGREEMENT

 

Lessor (Party A): Jiangsu Huadong Medical
Device Industrial Co., Ltd,

 

Lessee (Party B): Jiangsu Yada Technology
Group Co., Ltd.

 

This Lease Agreement (“Agreement”)
is made for and between Party A and Party B for Party A’s lease of Party A’s legally owned plant to Party B. In accordance
with relevant laws and regulations and on the basis of voluntariness, equality and reciprocity, both Parties agree the following:

 

		I.	Leased Plant

 

The plant that Party A leases to Party B
is located at No. 88 Tongda Road, Touqiao Town, Guangling District, Yangzhou, with a leased floor area of 1,100 square
meters.

 

		II.	Lease Term

 

		1.	The lease of the plant shall start from January 1, 2021 to December 31, 2021with a duration of one year.

 

		2.	Upon the expiration of the lease term, Party A shall be entitled to reclaim the leased plant, and Party B shall return the
plant as scheduled. Party B may renew the Agreement three months prior to the termination, with a written notice to Party A. With
Party A’s consent, both Parties may sign a new lease agreement.

 

		III.	Payment of Rent

 

		1.	Party A and Party B agree that the rent of the plant is RMB 60.00 per square meter of floor area with an annual of is
RMB 66,000.00.

 

		2.	Party B shall pay the rent of the plant to Party A once the Agreement is signed. The annual rent shall be paid in a lump sum
between January 1, 2021 and January 5, 2021.

 

		IV.	Other Expenses

 

		1.	During the lease term, Party B shall bear the expense of water, electricity, gas, telephone and other communications fees arising
from the use of the plant, and the payment shall be made within three days upon receiving the receipt or invoice.

 

		V.	Use and Maintenance of the Leased Plant

 

		1.	During the lease term, Party B shall promptly notify Party A for maintenance should the plant and its ancillary facilities
be found damaged or malfunctioning; Party A shall carry out maintenance within three days upon receiving Party B's notice. In the
case of Party A’s failure to carry out maintenance within the time limit, Party B may carry out maintenance on behalf of
Party A, with the cost borne by Party A.

 

     

     

    

 

		2.	During the lease term, Party B shall appropriately use and take care of the plant and its ancillary facilities. If inappropriate
use of Party B results in damage or malfunction of the plant and its ancillary facilities, Party B shall be responsible for maintenance.
Where Party B refuses to carry out maintenance, Party A may carry out maintenance on behalf of Party B, with the cost borne by
Party B.

 

		3.	During the lease term, Party A shall ensure that the plant and its ancillary facilities are in a normal, useable and safe condition.
Party A shall notify Party B three days in advance of the inspection and maintenance of the plant. Party B shall cooperate in the
inspection and maintenance, and Party A shall reduce the impact on Party B’s use of the plant.

 

		4.	Any furnishing or additional ancillary facilities and equipment by Party B is subject to Party A’s written consent in
advance. Should any approval from the relevant authorities be required in accordance with relevant provisions, Party A shall apply
for approval from the relevant authorities before Party B’s further moves.

 

		VI.	Others

 

		1.	The Agreement shall come into force on the date of signature and seal by both parties.

 

		2.	The Agreement shall be executed in duplicate, one copy for each party, with the same legal effect.

 

	Party A:	 	Party B:
	 	 	 
	Jiangsu Huadong Medical Device Industrial Co., Ltd,.	 	Jiangsu Yada Technology Group Co., Ltd.
	 	 	 
	Date: December 7, 2020Exhibit 10.7.5

 

PREMISE LEASE AGREEMENT

 

Lessor (Party A): Jiangsu Yada Technology
Group Co., Ltd

 

Lessee (Party B): Yangzhou Huada Medical
Device Co., Ltd.

 

This Lease Agreement (“Agreement”)
is made for and between Party A and Party B for Party A’s lease of Party A’s legally owned premise to Party B. In accordance
with relevant laws and regulations and on the basis of voluntariness, equality and reciprocity, both Parties agree the following:

 

		I.	Leased Premise

 

The premise that Party A leases to Party
B is located at No. 88 Tongda Road, Touqiao Town, Guangling District, Yangzhou City, with a leased floor area of 20
square meters.

 

		II.	Lease Term

 

		1.	The lease of the premise shall start from January 1, 2021 to December 31, 2021, with a duration of one
year.

 

		2.	Upon the expiration of the lease term, Party A shall be entitled to reclaim the leased premise, and Party B shall return the
premise as scheduled. Party B may renew the Agreement three months prior to the termination, with a written notice to Party A.
With Party A’s consent, both Parties may sign a new lease agreement.

 

		III.	Payment of Rent

 

		1.	Party A and Party B agree that the rent of the premise is RMB 60.00 per square meter of floor area with an annual rent
of RMB 1,200.00.

 

		2.	Party B shall pay the rent of the premise to Party A once the Agreement is signed. The annual rent shall be paid in a lump
sum between January 1, 2021 and January 5, 2021.

 

		IV.	Other Expenses

 

		1.	During the lease term, Party B shall bear the expense of water, electricity, gas, telephone and other communications fees arising
from the use of the premise, and the payment shall be made within three days upon receiving the receipt or invoice.

 

		V.	Use and Maintenance of the Leased Premise

 

		1.	During the lease term, Party B shall promptly notify Party A for maintenance should the premise and its ancillary facilities
be found damaged or malfunctioning; Party A shall carry out maintenance within three days upon receiving Party B's notice. In the
case of Party A’s failure to carry out maintenance within the time limit, Party B may carry out maintenance on behalf of
Party A, with the cost borne by Party A.

 

     

     

    

 

		2.	During the lease term, Party B shall appropriately use and take care of the premise and its ancillary facilities. If inappropriate
use of Party B results in damage or malfunction of the premise and its ancillary facilities, Party B shall be responsible for maintenance.
Where Party B refuses to carry out maintenance, Party A may carry out maintenance on behalf of Party B, with the cost borne by
Party B.

 

		3.	During the lease term, Party A shall ensure that the premise and its ancillary facilities are in a normal, useable and safe
condition. Party A shall notify Party B three days in advance of the inspection and maintenance of the premise. Party B shall cooperate
in the inspection and maintenance, and Party A shall reduce the impact on Party B’s use of the premise.

 

		4.	Any furnishing or additional ancillary facilities and equipment by Party B is subject to Party A’s written consent in
advance. Should any approval from the relevant authorities be required, Party A shall apply for approval from the relevant authorities
before Party B’s further moves.

 

		VI.	Others

 

		1.	The Agreement shall come into force on the date of signature and seal by both parties.

 

		2.	The Agreement shall be executed in duplicate, one copy for each party, with the same legal effect.

 

	Party A:	 	Party B:
	 	 	 
	Jiangsu Yada Technology Group Co., Ltd	 	Yangzhou Huada Medical Device Co., Ltd.
	 	 	 
	Date: December 7, 2020Exhibit 10.7.6

 

PREMISE LEASE AGREEMENT

 

Lessor (Party A): Jiangsu Yada Technology
Group Co., Ltd

 

Lessee (Party B): Jiangsu Huadong Medical
Device Industrial Co., Ltd.

 

This Lease Agreement (“Agreement”)
is made for and between Party A and Party B for Party A’s lease of Party A’s legally owned premise to Party B. In accordance
with relevant laws and regulations and on the basis of voluntariness, equality and reciprocity, both Parties agree the following:

 

		I.	Leased Premise

 

The premise that Party A leases to Party
B is located at No. 88 Tongda Road, Touqiao Town, Guangling District, Yangzhou City, with a leased floor area of 1,325
square meters.

 

		II.	Lease Term

 

		1.	The lease of the premise shall start from January 1, 2021 to December 31, 2021, with a duration of one
year.

 

		2.	Upon the expiration of the lease term, Party A shall be entitled to reclaim the leased premise, and Party B shall return the
premise as scheduled. Party B may renew the Agreement three months prior to the termination, with a written notice to Party A.
With Party A’s consent, both Parties may sign a new lease agreement.

 

		III.	Payment of Rent

 

		1.	Party A and Party B agree that the rent of the premise is RMB 60.00 per square meter of floor area with an annual rent
of RMB 79,500.00.

 

		2.	Party B shall pay the rent of the premise to Party A once the Agreement is signed. The annual rent shall be paid in a lump
sum between January 1, 2021 and January 5, 2021.

 

     

     

    

 

		IV.	Other Expenses

 

		1.	During the lease term, Party B shall bear the expense of water, electricity, gas, telephone and other communications fees arising
from the use of the premise, and the payment shall be made within three days upon receiving the receipt or invoice.

 

		V.	Use and Maintenance of the Leased Premise

 

		1.	During the lease term, Party B shall promptly notify Party A for maintenance should the premise and its ancillary facilities
be found damaged or malfunctioning; Party A shall carry out maintenance within three days upon receiving Party B’s notice.
In the case of Party A’s failure to carry out maintenance within the time limit, Party B may carry out maintenance on behalf
of Party A, with the cost borne by Party A.

 

		2.	During the lease term, Party B shall appropriately use and take care of the premise and its ancillary facilities. If inappropriate
use of Party B results in damage or malfunction of the premise and its ancillary facilities, Party B shall be responsible for maintenance.
Where Party B refuses to carry out maintenance, Party A may carry out maintenance on behalf of Party B, with the cost borne by
Party B.

 

		3.	During the lease term, Party A shall ensure that the premise and its ancillary facilities are in a normal, useable and safe
condition. Party A shall notify Party B three days in advance of the inspection and maintenance of the premise. Party B shall cooperate
in the inspection and maintenance, and Party A shall reduce the impact on Party B’s use of the premise.

 

		4.	Any furnishing or additional ancillary facilities and equipment by Party B is subject to Party A’s written consent in
advance. Should any approval from the relevant authorities be required, Party A shall apply for approval from the relevant authorities
before Party B’s further moves.

 

		VI.	Others

 

		1.	The Agreement shall come into force on the date of signature and seal by both parties.

 

		2.	The Agreement shall be executed in duplicate, one copy for each party, with the same legal effect.

 

	Party A:	 	Party B:
	 	 	 
	Jiangsu Yada Technology Group Co., Ltd	 	Jiangsu Huadong Medical Device Industrial Co., Ltd.
		 	 
	Date: December 7, 2020

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