How compatibility is stated on this site
The company profile states compatibility with Huawei, Cisco, HP, H3C, Juniper and MikroTik.
That statement is the company profile's own compatibility statement, quoted with attribution, on every model page. It is not a statement by any of the named equipment makers, it does not imply authorisation, certification, or partnership with them, and it does not make any named maker's product a product of this company. Brand names appear only in that compatibility context, never as product pages, and no brand page is published.
What compatibility means, in practice
A module is compatible with a piece of equipment when it fits the equipment's slot, matches its rate, matches its wavelength and distance design, matches its connector and fiber type, and is recognised by the equipment's software. A module can fit a slot but fail on any of the others: a module that fits but mismatches on wavelength will not link, a module that matches on wavelength but mismatches on distance may link unreliably, and a module that matches on all physical counts but is not recognised by the equipment's software may be rejected at boot.
That is why this site states compatibility as a company-profile statement, not as a guarantee, and why the inquiry asks for the exact equipment: the equipment's model, its software version, and its existing modules, so the supplier can confirm compatibility for that equipment, rather than for a product family in general.
What to confirm, before ordering
Name the equipment, its model and software version, the existing modules in use, the module you want, the quantity, and the market. Ask for a compatibility confirmation for that exact equipment, in writing, with the module named, so the confirmation is specific rather than general. A general compatibility statement is a starting point, not a confirmation; a specific confirmation, for your equipment, is the confirmation that matters.
Before payment, confirm the minimum order quantity, lead time, payment, shipping and warranty terms for your order. Certificates are available upon request.