Green Box & Common Seal of Hong Kong Company

Sometimes, we received inquiries from potential clients about whether or not Green Box and Common Seal would be included in the incorporation package, because other agents quoted these items and seems mandatory and would like us to explain. To facilitate with, we are pleased to share this blog post as permanent reference for you guys.
Green Box
Green Box is box set for keeping all the company records together with the stationery in the old times when typewriter and handwriting were the methods to maintain proper records, usually with below listed items:-

Nowadays, as most of the company records already with scanned copies or electronic version available, except those certificates, such as Certificate of Incorporation and Business Registration Certificate, there is no mandatory legal requirement to keep hard copy record; Hong Kong as a world leading commercial center, government authorities actually promoting paperless filing instead, while our company kit was purposely designed to minimize the size and weight for easy to carry during travel.
Common Seal
Since the launched of the New Companies Ordinance (Cap. 622), common seal has become an optional item for any Hong Kong company:-

The web link of the respective FAQ section by Companies Registry as follows:-http://www.cr.gov.hk/en/companies_ordinance/faq_common_seal.htm
Further that, below with the respective Companies Ordinance section in relation to the execution of a document of a Hong Kong company when a common seal was not adopted:-

As the common seal must be a metallic seal, heavy weighted yet seldom be used, unless with client’s specific request, we trend to allow clients to adopt a simpler way in doing business. Below with the difference between each chop of Hong Kong company as well:-
Round Chop
Daily operation use
Acknowledgement receipt
On quotation, invoice, receipt
Outing correspondence or letter
Authorized Signature Chop
Use with signature of authorized signer(s)
Agreements
Contracts
Bank documents, cheques