For non-distributed products, which of the following customer support service products is a controlled sale? (Multiple choice)

In the context of Huawei's service sales, "controlled sale" typically refers to services that are not standard, bundled offerings and may require special quotation, approval, or resource validation. A 'Single repair service' (Per-Incident) is reactive and sold on a case-by-case basis. 'Basic maintenance' is the lowest tier of proactive service and is often not the standard offering for many products, making its sale more controlled compared to the more common 'Standard' or 'Premier' tiers which are easily bundled with hardware sales.

B. Standard maintenance: This is a common, widely available service tier that is typically bundled with product sales and is not considered a controlled sale.
D. Standard + maintenance: This is not a standard Huawei service tier name. Service tiers are typically distinct, such as Basic, Standard, and Premier (or Gold).
E. Gold + Maintenance: This is not a standard Huawei service tier name. Huawei uses terms like Premier or Hi-Care for its higher-level support services.

1. Huawei Enterprise, "Hi-Care and Co-Care Support Services" documentation. While not explicitly using the term "controlled sale," the service descriptions differentiate between standard contract-based services (like Standard) and non-standard or per-incident services, which require a different sales process. The structure implies that non-standard offerings like single repair and less-common tiers like Basic are managed differently. (Found in various Hi-Care Service Description PDFs available on the Huawei Enterprise support website).