Sure, I'll gladly break down this job listing keeping your requests into account:

Tips for applying successfully:

1. Highlight experience in Sales, Marketing or Business Administration: It's noted in the "qualifications and experience" section. It's important to showcase any experiences that may demonstrate your qualifications in these areas.

2. Showcase good written and oral communication skills: Make sure your CV is well-structured, grammatically correct and free of typos. Your cover letter should similarly be compelling and succinct.

3. Balance promotion and networking ability with customer responsiveness: Highlight instances in your work history where you have successfully promoted services or products, grown a network and demonstrated excellent customer service.

4. Display energy and quality commitment: You should use your CV to show clear examples of times when you've applied energy and a dedication to quality in your previous roles.

5. Show your technical experience or skills: Give examples of your technical proficiency, or any technical qualifications that you hold, as they'd be an added advantage—for instance, familiarity with parts inventory management.

Areas to take greater note of:

1. Application deadline: Take note of the closing date for application which is 8th December 2023 and ensure to submit earlier than the deadline.

2. Unusual requirements: Applicants are required to have a Class 4 Driver’s license. Each requirement like this added to a job posting narrows the pool of candidates, so it deserves attention—it might become a key to qualifying for the job.

3. Company's email: The email address to forward applications to as stated in the "how to apply" section. Cross-check to ensure it is correctly typed to avoid sending to the wrong mail address.

4. Potential for career development: The involvement in the training of parts sales staff and graduate trainees suggests ladder-climbing opportunities within the organization.

5. The phrase "only shortlisted applicants will be responded to." This phrase means they will only contact you if they want to invite you to interview, you won't hear from them if you're not selected.

Key things to stand out in a flooded candidate pool:

1. Show how you've had impact in past roles: Highlight accomplishments that illustrate how you added value in your previous roles related to jobs in Zimbabwe and especially in areas involving sales, customer relationships and inventory management.

2. Demonstrate transferable skills: If you lack specific industry experience, leverage your transferable skills from other industries which can be beneficial for the role.

3. Personalize your application: Address how your experience and abilities directly meet the needs of the company.

Important things most novice applicants would miss:

1. Achieving monthly targets: The necessity of meeting monthly targets suggests a performance-driven environment. This might be missed by novice applicants.

2. Handling of customer complaints: This implies strong problem-solving skills and the ability to handle stressful situations effectively and professionally.

3. Balancing individual parts inventory levels: This points to the criticality of efficiency and strategic thinking within the job. Novice applicants may undervalue the importance of showcasing their analytical skills.

In my years of providing expert recruitment services across Zimbabwe, be it for ngo vacancies or other job vacancies in zim, what I've noticed is that, exceptional applicants are those who understand the subtle, or 'hidden' messages behind a job listing. They pay attention to every little detail and understand the kind of personnel a company wants, and how they might adapt to fit that image.

Remember, in your job search in Zimbabwe, standing out might be your ticket to securing promising job offers in Zimbabwe, and remember, you're not just selling your skills, but also your unique personality and approach!